2463 lines
68 KiB
NASM
Executable File
2463 lines
68 KiB
NASM
Executable File
|
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.386P
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Segment DriverHeader PARA Public 'Code' Use16
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Assume CS:Driver, DS:Nothing
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;***** Driver Header *******
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include drhead.inc
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EndS
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Segment Driver PARA Public 'Code' Use16
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Assume CS:Driver, DS:Nothing
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ORG 0
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StartDriver:
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include vtable.inc
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;******** Required ProcedureTable *************
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include reqproc.inc
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;**********************************
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STEREOENABLED EQU 1
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DMABUFFERLENGTH EQU 4096
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ENDLOCATIONHIGH EQU 1Fh
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ENDLOCATIONLOW EQU 0FE00h
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HALFENDLOCATIONHIGH EQU 0Fh
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HALFENDLOCATIONLOW EQU 0FE00h
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MIXRESOLUTION EQU 32 ; 32 bit mixing for the GUS
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MIXTABLESIZE EQU 2*256*65
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Voice0Position DD 0
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Voice1Position DD 0
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GUSMsg DB "Gravis Ultrasound detected", 13
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DB "Port ", 0FDh, "Xh, IRQ ", 0FDh, "D, DMA ", 0FDh, "D", 0
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GUSNoMemoryMsg DB "Gravis Ultrasound detected", 13
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DB "Error: Insufficient memory", 0
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ReinitMsg DB "Gravis Ultrasound reinitialised", 0
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ConfigErrorMsg DB "Error saving configuration to ITGUSMIX.DRV", 0
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ConfigOKMsg DB "Configuration saved to ITGUSMIX.DRV", 0
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DriverName DB "ITGUSMIX.DRV", 0
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UltrasndString DB "ULTRASND"
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GUSMixTable Label Word
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DW 44100, 41160, 38588, 36318, 34300, 32495, 30870, 29400, 28064
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DW 26844, 25725, 24696, 23746, 22867, 22050, 21290, 20580, 19916
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DW 19294
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DSPVersion DW 0
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DSPIRQValue DB 0
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DSPDMAValue DB 0
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Forced DB 0
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Stereo DB 0
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MixVolume DW 0
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BytesToMix DW 1000
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MixSpeed DW 44100
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GUSChannels DB 14
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MixSegment DW 0
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DMASegment DW 0
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MixTransferOffset DW 0
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MixTransferRemaining DW 0
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GUSRegisterSelect DW 0
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GUSVoiceSelect DW 0
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CONFIGURATIONOFFSET EQU $+128
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CONFIGSIZE EQU 8
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MixMode DW 0
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MixModeOffset DW 0
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Filter DW 0
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DMASize DW 4096
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IMR DW 0
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OldIRQHandler DD 0
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FilterValue DD 0
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FilterValue2 DD 0
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IRQData Label Word
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DW 20h, 1111111111111110b ; IRQ 0
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DW 24h, 1111111111111101b ; IRQ 1
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DW 28h, 1111110111111011b ; IRQ 2
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DW 2Ch, 1111111111110111b ; IRQ 3
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DW 30h, 1111111111101111b ; IRQ 4
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DW 34h, 1111111111011111b ; IRQ 5
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DW 38h, 1111111110111111b ; IRQ 6
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DW 3Ch, 1111111101111111b ; IRQ 7
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DW 1C0h, 1111111011111011b ; IRQ 8
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DW 1C4h, 1111110111111011b ; IRQ 9
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DW 1C8h, 1111101111111011b ; IRQ 10
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DW 1CCh, 1111011111111011b ; IRQ 11
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DW 1D0h, 1110111111111011b ; IRQ 12
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DW 1D4h, 1101111111111011b ; IRQ 13
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DW 1D8h, 1011111111111011b ; IRQ 14
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DW 1DCh, 0111111111111011b ; IRQ 15
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;**********************************
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GUSScreenList Label
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DW 6
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DW Near Ptr IdleFunctionList
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DW Near Ptr GlobalKeyLink
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DW Near Ptr FullScreenBox ; 0
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DW Near Ptr ScreenHeader
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DW Near Ptr FillHeader
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DW Near Ptr GUSHeaderLine
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DW Near Ptr DriverText
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DW Near Ptr MixModeText
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DW Near Ptr MixModeButton1 ; 6
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DW Near Ptr MixModeButton2 ; 7
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DW Near Ptr MixModeButton3 ; 8
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DW Near Ptr MixModeButton4 ; 9
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DW Near Ptr FilterText
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DW Near Ptr FilterButton1 ; 11
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DW Near Ptr FilterButton2
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DW Near Ptr FilterButton3
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DW 0
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GUSHeaderLine DW 10
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DB "Gravis Ultrasound Mixed Driver", 0
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DriverText DW 1
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DB 30, 48
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DB 21h
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DB "Gravis Ultrasound Driver 1.0 for Impulse Tracker", 0
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GlobalKeyLink DB 7
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GlobalKeyLink2 DD 0
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IdleFunctionList DD 0
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DD 0
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FillHeader DW 8
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FillHeader2 DD 0
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FullScreenBox DW 0
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DB 0, 0, 79, 49
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DB 4
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ScreenHeader DW 8
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ScreenHeader2 DD 0
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MixModeText DW 1
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DB 2, 13
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DB 20h
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DB "Mixing Mode", 0
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MixModeButton1 DW 2
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DW 0FFFFh, 7, 0FFFFh, 0FFFFh
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DW 0
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DW 0, 0
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DW 6
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DW Offset GetMixMode
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DriverSegment1 DW 0
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DW 0
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DW Offset SetMixMode
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DriverSegment2 DW 0
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DB 3, 15, 32, 17, 8
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DB 0
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DB " 16 Bit, Non-Interpolated", 0
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MixModeButton2 DW 2
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DW 6, 8, 0FFFFh, 0FFFFh
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DW 0
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DW 0, 0
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DW 6
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DW Offset GetMixMode
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DriverSegment3 DW 0
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DW 2
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DW Offset SetMixMode
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DriverSegment4 DW 0
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DB 3, 18, 32, 20, 8
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DB 0
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DB " 16 Bit, Interpolated", 0
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MixModeButton3 DW 2
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DW 7, 9, 0FFFFh, 0FFFFh
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DW 0
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DW 0, 0
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DW 6
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DW Offset GetMixMode
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DriverSegment5 DW 0
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DW 4
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DW Offset SetMixMode
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DriverSegment6 DW 0
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DB 3, 21, 32, 23, 8
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DB 0
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DB " 32 Bit, Non-Interpolated", 0
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MixModeButton4 DW 2
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DW 8, 11, 0FFFFh, 0FFFFh
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DW 0
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DW 0, 0
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DW 6
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DW Offset GetMixMode
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DriverSegment7 DW 0
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DW 6
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DW Offset SetMixMode
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DriverSegment8 DW 0
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DB 3, 24, 32, 26, 8
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DB 0
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DB " 32 Bit, Interpolated", 0
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FilterText DW 1
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DB 2, 28
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DB 20h
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DB "Filter mode", 0
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FilterButton1 DW 2
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DW 9, 12, 0FFFFh, 0FFFFh
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DW 0
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DW 0, 0
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DW 6
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DW Offset GetFilter
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DriverSegment9 DW 0
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DW 0
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DW Offset SetFilter
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DriverSegment10 DW 0
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DB 3, 30, 29, 32, 8
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DB 0
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DB " No Filter", 0
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FilterButton2 DW 2
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DW 11, 13, 0FFFFh, 0FFFFh
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DW 0
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DW 0, 0
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DW 6
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DW Offset GetFilter
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DriverSegment11 DW 0
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DW 1
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DW Offset SetFilter
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DriverSegment12 DW 0
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DB 3, 33, 29, 35, 8
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DB 0
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DB " 50% Filter", 0
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FilterButton3 DW 2
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DW 12, 0FFFFh, 0FFFFh, 0FFFFh
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DW 0
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DW 0, 0
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DW 6
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DW Offset GetFilter
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DriverSegment13 DW 0
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DW 2
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DW Offset SetFilter
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DriverSegment14 DW 0
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DB 3, 36, 29, 38, 8
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DB 0
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DB " 75% Filter", 0
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; <20><> MixingRoutines <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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MixBufferPos DW 0
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MixBufferDestination DW 0
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include dmanai.inc ; Non-auto-initialise DMA
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include mix.inc
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include m12bit.mix
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include m12biti.mix
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include m32bit.mix
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include m32biti.mix
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MixFunctionTables Label
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include m12bit.inc ; contains the tables
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include m12biti.inc
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include m32bit.inc
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include m32biti.inc
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;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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RelocationTable Label Word
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DW Offset DriverSegment1, Offset DriverSegment2
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DW Offset DriverSegment3, Offset DriverSegment4
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DW Offset DriverSegment5, Offset DriverSegment6
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DW Offset DriverSegment7, Offset DriverSegment8
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DW Offset DriverSegment9, Offset DriverSegment10
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DW Offset DriverSegment11, Offset DriverSegment12
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DW Offset DriverSegment13, Offset DriverSegment14
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DW 0
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;***********************************************
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Proc GUSDelay
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Push AX
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Push DX
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Mov DX, 300h
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In AL, DX
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In AL, DX
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In AL, DX
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In AL, DX
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In AL, DX
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In AL, DX
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In AL, DX
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In AL, DX
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Pop DX
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Pop AX
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Ret
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EndP GUSDelay
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;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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||
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Proc ResetGUS ; AX = baseport.
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Push AX
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Push DX
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Mov DX, AX
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Add DX, 103h ; Select register
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Mov AL, 4Ch ; Reset global register
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Out DX, AL
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Add DL, 2 ; 8 bit data
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Xor AL, AL
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Out DX, AL ; Reset GUS!
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Call GUSDelay
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Call GUSDelay
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Mov AL, 1
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Out DX, AL
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Call GUSDelay
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Call GUSDelay
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Pop DX
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Pop AX
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Ret
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EndP ResetGUS
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;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
Proc GetMixMode Far
|
||
|
||
Push CS
|
||
Pop ES
|
||
Mov DI, Offset MixMode
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||
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||
Ret
|
||
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||
EndP GetMixMode
|
||
|
||
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
Proc GetFilter Far
|
||
|
||
Push CS
|
||
Pop ES
|
||
Mov DI, Offset Filter
|
||
|
||
Ret
|
||
|
||
EndP GetFilter
|
||
|
||
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
Proc SetFilter Far
|
||
|
||
Mov AX, [SI+22]
|
||
Mov CS:FilterValue, 0
|
||
Mov CS:Filter, AX
|
||
ClI
|
||
Jmp SetMixModeChain
|
||
|
||
EndP SetFilter
|
||
|
||
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
Proc SetMixMode Far
|
||
|
||
Mov AX, [SI+22]
|
||
|
||
ClI
|
||
|
||
Mov CS:MixMode, AX
|
||
|
||
Mov BX, 180
|
||
Mul BX
|
||
Mov CS:MixModeOffset, AX
|
||
|
||
Mov DS, Word Ptr [CS:RecalculateAllVolumes+2]
|
||
Call CS:RecalculateAllVolumes
|
||
|
||
StI
|
||
|
||
SetMixModeChain:
|
||
Call GotoHomeDirectory
|
||
|
||
; Now to save config into driver file.
|
||
Push CS
|
||
Pop DS
|
||
Assume DS:Driver
|
||
|
||
Mov AX, 3D02h ; Read write access
|
||
Mov DX, Offset DriverName
|
||
Mov SI, Offset ConfigErrorMsg
|
||
Int 21h
|
||
JC SetMixMode1
|
||
|
||
Mov BX, AX
|
||
|
||
Mov AX, 4200h
|
||
Xor CX, CX
|
||
Mov DX, Offset CONFIGURATIONOFFSET
|
||
Int 21h
|
||
JC SetMixMode2
|
||
|
||
Mov AH, 40h
|
||
Mov CX, CONFIGSIZE
|
||
Mov DX, Offset MixMode
|
||
Int 21h
|
||
|
||
SetMixMode2:
|
||
PushF
|
||
Mov AH, 3Eh
|
||
Int 21h
|
||
PopF
|
||
|
||
JC SetMixMode1
|
||
|
||
Mov SI, Offset ConfigOKMsg
|
||
|
||
SetMixMode1:
|
||
|
||
Mov BX, 200
|
||
Call SetInfoLine
|
||
|
||
Mov AX, 1
|
||
Ret
|
||
|
||
EndP SetMixMode
|
||
Assume DS:Nothing
|
||
|
||
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
Proc GetSBMixConst ; Work out value.. and nearest
|
||
; mixspeed value.
|
||
|
||
PushA
|
||
Push DS
|
||
|
||
Push CS
|
||
Pop DS
|
||
Assume DS:Driver
|
||
|
||
Mov AX, CmdLineMixSpeed
|
||
Mov CX, MixSpeed
|
||
Test AX, AX
|
||
JZ GetSBMixConst1
|
||
|
||
Mov CX, 44100
|
||
Cmp AX, CX
|
||
JA GetSBMixConst1
|
||
|
||
Mov CX, 12000
|
||
Cmp AX, CX
|
||
JB GetSBMixConst1
|
||
|
||
Mov CX, AX
|
||
|
||
GetSBMixConst1:
|
||
; OK.. find number of voices to
|
||
; achieve desired mix speed.
|
||
Mov SI, Offset GUSMixTable
|
||
Mov BL, 14
|
||
Mov CX, 32-14
|
||
|
||
GetSBMixConst2:
|
||
LodsW
|
||
Cmp AX, CX
|
||
JAE GetSBMixConst3
|
||
|
||
Inc BL
|
||
Loop GetSBMixConst2
|
||
|
||
GetSBMixConst3:
|
||
Mov GUSChannels, BL
|
||
|
||
Pop DS
|
||
PopA
|
||
Ret
|
||
|
||
EndP GetSBMixConst
|
||
Assume DS:Nothing
|
||
|
||
; <20><> DetectCard <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
;
|
||
; Returns carry set if error, else carry clear. Has to setup internal vars
|
||
; (eg. appropriate IRQ/DMA whatever).
|
||
;
|
||
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
Proc DetectCard Far
|
||
|
||
Push CS
|
||
Pop DS
|
||
Assume DS:Driver
|
||
|
||
Mov Forced, AL
|
||
|
||
Mov SI, Offset ULTRASNDString
|
||
Mov CX, 8
|
||
Call GetEnvironment ; Returns ES:DI, Carry if error
|
||
JC DetectCardError
|
||
|
||
Xor DX, DX ; Baseport first.
|
||
|
||
DetectCard1:
|
||
Mov AL, [ES:DI]
|
||
Inc DI
|
||
|
||
Cmp AL, ','
|
||
JE DetectCard2
|
||
|
||
Sub AL, '0'
|
||
JC DetectCardError
|
||
Cmp AL, '9'
|
||
JA DetectCardError
|
||
|
||
ShL DX, 4
|
||
Add DL, AL
|
||
Jmp DetectCard1
|
||
|
||
DetectCard2:
|
||
Cmp DX, 210h
|
||
JB DetectCardError
|
||
Cmp DX, 280h
|
||
JA DetectCardError
|
||
|
||
Mov BasePort, DX
|
||
Add DX, 102h
|
||
Mov GUSVoiceSelect, DX
|
||
Inc DL
|
||
Mov GUSRegisterSelect, DX
|
||
|
||
; Get DMA
|
||
Xor DX, DX
|
||
|
||
DetectCard3:
|
||
Mov AL, [ES:DI]
|
||
Inc DI
|
||
Cmp AL, ','
|
||
JE DetectCard4
|
||
|
||
Sub AL, '0'
|
||
JC DetectCardError
|
||
Cmp AL, 9
|
||
JA DetectCardError
|
||
|
||
IMul DX, 10
|
||
Add DL, AL
|
||
Jmp DetectCard3
|
||
|
||
DetectCard4:
|
||
Cmp DX, 7
|
||
JA DetectCardError
|
||
|
||
Mov DMA, DX
|
||
|
||
Xor DX, DX
|
||
|
||
DetectCard5:
|
||
Mov AL, [ES:DI]
|
||
Inc DI
|
||
Cmp AL, ','
|
||
JE DetectCard6
|
||
|
||
Sub AL, '0'
|
||
JC DetectCardError
|
||
Cmp AL, 9
|
||
JA DetectCardError
|
||
|
||
IMul DX, 10
|
||
Add DL, AL
|
||
Jmp DetectCard5
|
||
|
||
DetectCard6:
|
||
Cmp DX, 7
|
||
JA DetectCardError
|
||
; Wasted DMA..
|
||
|
||
; IRQ..
|
||
|
||
Xor DX, DX
|
||
|
||
DetectCard7:
|
||
Mov AL, [ES:DI]
|
||
Inc DI
|
||
Cmp AL, ','
|
||
JE DetectCard8
|
||
|
||
Sub AL, '0'
|
||
JC DetectCardError
|
||
Cmp AL, 9
|
||
JA DetectCardError
|
||
|
||
IMul DX, 10
|
||
Add DL, AL
|
||
Jmp DetectCard7
|
||
|
||
DetectCard8:
|
||
Cmp DX, 15
|
||
JA DetectCardError
|
||
|
||
Mov IRQ, DX
|
||
|
||
Mov EAX, 'Jeff'
|
||
ClC
|
||
Ret
|
||
|
||
DetectCardError:
|
||
StC
|
||
Ret
|
||
|
||
EndP DetectCard
|
||
Assume DS:Nothing
|
||
|
||
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
MixModeTable Label Word
|
||
DW Offset Mix0ModeMono, Mix0ModeStereo
|
||
DW Offset Mix0ModeMono, Mix0ModeStereo
|
||
DW Offset Mix6ModeMono, Mix6ModeStereo
|
||
DW Offset Mix6ModeMono, Mix6ModeStereo
|
||
|
||
Proc MixSamples ; Given DS:SI = info tables, CX = numchannels
|
||
|
||
; 1. Clean buffer
|
||
; + update variables
|
||
; 2. Update parameters
|
||
; 3. Mix func
|
||
; 4. Return
|
||
|
||
Push CX
|
||
|
||
Mov CX, BytesToMix
|
||
Mov ES, MixSegment
|
||
Mov DI, MIXTABLESIZE
|
||
Xor EAX, EAX
|
||
Mov DX, CX
|
||
Add CX, CX
|
||
|
||
Mov MixTransferOffset, DI ; } Memory write
|
||
|
||
Cmp Stereo, 0
|
||
JE MixSamples1
|
||
|
||
Mov DX, CX
|
||
|
||
MixSamples1:
|
||
Rep StosD ; } Memory write
|
||
Mov MixTransferRemaining, DX ; }
|
||
|
||
Pop CX
|
||
|
||
MixSamples2:
|
||
Test Byte Ptr [SI], 1
|
||
JZ MixSamplesEnd2
|
||
Cmp Byte Ptr [SI+36h], 100
|
||
JE MixSamplesEnd2
|
||
|
||
Push CX
|
||
Mov CX, [SI]
|
||
|
||
Test CH, 2
|
||
JZ MixSamples3
|
||
And Byte Ptr [SI], Not 1
|
||
|
||
Jmp MixSamplesEnd
|
||
; Cmp MixMode, 8 ; Is it volume ramping?
|
||
; JB MixSamplesEnd
|
||
|
||
MixSamples3:
|
||
Test CL, 20h ; New freq?
|
||
JZ MixSamples5
|
||
|
||
Mov AX, [SI+10h]
|
||
Mov DX, [SI+12h]
|
||
Mov BX, MixSpeed
|
||
Cmp DX, BX
|
||
JAE MixSamplesHandleError
|
||
|
||
Div BX
|
||
ShL EAX, 16
|
||
Xor AX, AX
|
||
Div BX
|
||
Mov STEPVALUE, EAX
|
||
|
||
MixSamples4:
|
||
Test CH, 1
|
||
JZ MixSamples5
|
||
|
||
Mov DWord Ptr [SI+1Ch], 0 ; Current Volume = 0
|
||
; for volume sliding.
|
||
MixSamples5:
|
||
Test CX, 8440h ; New volume or panning?
|
||
JZ MixSamplesMix
|
||
|
||
Xor AX, AX
|
||
Test CH, 8 ; Muted?
|
||
JNZ MixModeCommon
|
||
|
||
Mov BX, MixMode
|
||
Add BL, Stereo
|
||
Add BX, BX
|
||
Jmp [CS:MixModeTable+BX]
|
||
|
||
Mix0Mode: ; 16-bit mixing, no interpolation
|
||
Mix0ModeMono: ; and 16-bit mixing, interpolation
|
||
Mov AL, [SI+20h]
|
||
ShR AL, 1
|
||
Mov [SI+0Ch], AX
|
||
Mov [SI+0Eh], AX
|
||
Mov AX, 0
|
||
JZ MixModeCommon
|
||
Mov AL, 30 ; Use left only-mixing for mono
|
||
Jmp MixModeCommon
|
||
|
||
Mix0ModeStereo:
|
||
Mov AL, [SI+37h] ; Final pan
|
||
Cmp AL, 100
|
||
JE Mix0ModeSurround
|
||
|
||
Mul Byte Ptr [SI+20h] ; Final volume
|
||
Add AX, 64
|
||
ShR AX, 7
|
||
Mov [SI+0Ch], AX ; Store into right volume
|
||
|
||
Mov AL, 64
|
||
Sub AL, [SI+37h]
|
||
Mul Byte Ptr [SI+20h]
|
||
Add AX, 64
|
||
ShR AX, 7
|
||
Mov [SI+0Eh], AX ; Left volume
|
||
|
||
Mov CH, AL ; CH = left volume
|
||
Mov CL, [SI+0Ch] ; CL = right volume
|
||
Mov AX, 0
|
||
|
||
Test CX, CX
|
||
JZ MixModeCommon
|
||
|
||
Mov AL, 30 ; Left only...
|
||
Test CL, CL
|
||
JZ MixModeCommon
|
||
|
||
Mov AL, 60
|
||
Test CH, CH
|
||
JZ MixModeCommon
|
||
|
||
Mov AL, 90
|
||
Cmp CL, CH
|
||
JZ MixModeCommon
|
||
|
||
Mov AL, 120
|
||
Jmp MixModeCommon
|
||
|
||
Mix0ModeSurround:
|
||
Mov AL, [SI+20h]
|
||
ShR AL, 2
|
||
Mov [SI+0Ch], AX
|
||
Mov [SI+0Eh], AX
|
||
Mov AX, 0
|
||
JZ MixModeCommon
|
||
Mov AL, 150 ; Surround
|
||
Jmp MixModeCommon
|
||
|
||
Mix6ModeMono:
|
||
Mov AX, [SI+4Ah]
|
||
Mul MixVolume
|
||
ShRD AX, DX, 8
|
||
Mov [SI+0Ch], AX
|
||
Mov [SI+0Eh], AX
|
||
Test AX, AX
|
||
JZ MixModeCommon
|
||
Mov AX, 30
|
||
Jmp MixModeCommon
|
||
|
||
Mix6ModeStereo:
|
||
Mov AL, [SI+37h] ; Final pan
|
||
Cmp AL, 100
|
||
JE Mix6ModeSurround
|
||
|
||
Mul Byte Ptr MixVolume
|
||
Mul Word Ptr [SI+4Ah]
|
||
ShRD AX, DX, 14
|
||
Mov [SI+0Ch], AX ; Store into right volume
|
||
Mov BX, AX
|
||
ShL EAX, 16
|
||
|
||
Mov AL, 64 ; Do left volume
|
||
Sub AL, [SI+37h] ; AL = 64-FinalPan
|
||
Mul Byte Ptr MixVolume
|
||
Mul Word Ptr [SI+4Ah]
|
||
ShRD AX, DX, 14
|
||
Mov [SI+0Eh], AX
|
||
|
||
Mov ECX, EAX
|
||
|
||
; BX = right volume
|
||
; CX = Left volume
|
||
Mov AX, 0
|
||
Test ECX, ECX
|
||
JZ MixModeCommon
|
||
|
||
Mov AL, 30
|
||
Test BX, BX
|
||
JZ MixModeCommon
|
||
|
||
Mov AL, 60
|
||
Test CX, CX
|
||
JZ MixModeCommon
|
||
|
||
Mov AL, 90
|
||
Cmp CX, BX
|
||
JE MixModeCommon
|
||
|
||
Mov AL, 120
|
||
Jmp MixModeCommon
|
||
|
||
Mix6ModeSurround:
|
||
Mov AX, [SI+4Ah]
|
||
Mul MixVolume
|
||
ShRD AX, DX, 9
|
||
Mov [SI+0Ch], AX
|
||
Mov [SI+0Eh], AX
|
||
JZ MixModeCommon
|
||
Mov AX, 150
|
||
Jmp MixModeCommon
|
||
|
||
MixModeCommon: ; Requires AX = 30/60/90 etc. depending
|
||
; On mixing mode type.
|
||
; This will add 180 for 16-bit,
|
||
; And sort out loop types.
|
||
Mov BL, [SI+0Ah]
|
||
Test Byte Ptr [SI+18h], 2 ; 16 bit?
|
||
JZ MixModeCommon1
|
||
|
||
Add AX, 180
|
||
|
||
MixModeCommon1:
|
||
Cmp BL, 8
|
||
JB MixModeCommon3 ; No loop
|
||
JE MixModeCommon2 ; Forwards loop
|
||
|
||
Add AX, 10
|
||
|
||
MixModeCommon2:
|
||
Add AX, 10
|
||
|
||
MixModeCommon3:
|
||
Add AX, Offset MixFunctionTables
|
||
Add AX, MixModeOffset
|
||
Mov [SI+8], AX ; Offset...
|
||
|
||
MixSamplesMix:
|
||
Mov BX, [SI+8] ; BX = offset into
|
||
Mov EAX, [CS:BX+2]
|
||
Mov DWord Ptr PreMixFunction, EAX
|
||
Mov EAX, [CS:BX+6]
|
||
Mov DWord Ptr MixFunctionSeparateBackwards, EAX
|
||
|
||
Mov AX, BytesToMix
|
||
Mov MixBlockSize, AX
|
||
Mov MixBufferOffset, MIXTABLESIZE
|
||
|
||
Mov EAX, CURRENTPOSITION
|
||
Mov OLDPOSITION, EAX
|
||
|
||
Call Word Ptr [CS:BX]
|
||
|
||
And Word Ptr [SI], 0111100010001101b
|
||
Jmp MixSamplesEnd
|
||
|
||
MixSamplesHandleError:
|
||
Mov Word Ptr [SI], 200h
|
||
|
||
Test Byte Ptr [SI+3Ah], 80h
|
||
JNZ MixSamplesEnd
|
||
|
||
Mov BX, [SI+38h]
|
||
And Byte Ptr [BX], Not 4 ; Turn off channel
|
||
|
||
MixSamplesEnd:
|
||
Pop CX
|
||
|
||
MixSamplesEnd2:
|
||
Add SI, 128
|
||
Dec CX
|
||
JNZ MixSamples2
|
||
|
||
Ret
|
||
|
||
EndP MixSamples
|
||
|
||
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
Proc GUSIRQHandler
|
||
|
||
PushAD
|
||
Push DS
|
||
Push ES
|
||
|
||
CLD
|
||
|
||
Mov AX, CS
|
||
Mov DS, AX
|
||
Assume DS:Driver
|
||
|
||
Mov AL, 20h
|
||
Cmp IRQ, 7
|
||
JBE GUSIRQHandler1
|
||
|
||
Out 0A0h, AL
|
||
|
||
GUSIRQHandler1:
|
||
Out 20h, AL
|
||
|
||
Mov DX, BasePort
|
||
Add DL, 6
|
||
In AL, DX
|
||
|
||
Test AL, 20h
|
||
JZ GUSIRQHandlerEnd
|
||
|
||
; OK.. need to determine Cause type
|
||
GUSIRQAgain:
|
||
Mov DX, GUSRegisterSelect
|
||
Mov AL, 8Fh
|
||
Out DX, AL
|
||
Add DL, 2
|
||
In AL, DX ; Bit 6 = waveramp IRQ
|
||
|
||
Test AL, 80h
|
||
JZ GUSLoopIRQ
|
||
|
||
Jmp GUSIRQHandlerEnd
|
||
|
||
GUSLoopIRQ: ; Need to disable looping and
|
||
; enable rollover. Set End address
|
||
; to midpoint.
|
||
Xor MixBufferPos, 1
|
||
JZ GUSRolloverIRQ
|
||
|
||
; Mov MixBufferDestination, DMABUFFERLENGTH/16/2
|
||
Mov MixBufferDestination, DMABUFFERLENGTH
|
||
|
||
Mov DX, GUSVoiceSelect
|
||
Xor AL, AL
|
||
Out DX, AL
|
||
|
||
Inc DX
|
||
Call GUSDelay
|
||
|
||
Mov AL, 4 ; End address high
|
||
Out DX, AL
|
||
Mov AX, HALFENDLOCATIONHIGH
|
||
Inc DX
|
||
Out DX, AX
|
||
Dec DX
|
||
|
||
Mov AL, 5 ; End address low
|
||
Out DX, AL
|
||
Mov AX, HALFENDLOCATIONLOW
|
||
; Cmp CS:Stereo, 0
|
||
; JE HalfEndLocationMono
|
||
;
|
||
; Mov AX, HALFENDLOCATIONSTEREOLOW
|
||
;
|
||
; HalfEndLocationMono:
|
||
Inc DX
|
||
Out DX, AX
|
||
Dec DX
|
||
|
||
Xor AL, AL
|
||
Out DX, AL
|
||
Mov AL, 4+32 ; 16-bit data, no loop, no IRQ.
|
||
Add DL, 2
|
||
Out DX, AL
|
||
Call GUSDelay
|
||
Out DX, AL
|
||
Sub DL, 2
|
||
|
||
Mov AL, 0Dh
|
||
Out DX, AL
|
||
Mov AL, 3+4 ; Enable rollover
|
||
Add DL, 2
|
||
Out DX, AL
|
||
Call GUSDelay
|
||
Out DX, AL
|
||
Sub DL, 2
|
||
|
||
Jmp GUSIRQEnd
|
||
|
||
GUSRolloverIRQ: ; Need to disable rollover and
|
||
; enable looping. Set End address
|
||
; to endpoint.
|
||
Mov MixBufferDestination, 0
|
||
|
||
Mov DX, GUSVoiceSelect
|
||
Xor AL, AL
|
||
Out DX, AL
|
||
|
||
Call GUSDelay
|
||
Inc DX
|
||
|
||
Mov AL, 4 ; End address high
|
||
Out DX, AL
|
||
Mov AX, ENDLOCATIONHIGH
|
||
Inc DX
|
||
Out DX, AX
|
||
Dec DX
|
||
|
||
Mov AL, 5 ; End location low
|
||
Out DX, AL
|
||
Mov AX, ENDLOCATIONLOW
|
||
|
||
; Cmp Stereo, 0
|
||
; JE EndLocationMono
|
||
;
|
||
; Mov AX, ENDLOCATIONSTEREOLOW
|
||
;
|
||
; EndLocationMono:
|
||
Inc DX
|
||
Out DX, AX
|
||
Dec DX
|
||
|
||
Xor AL, AL
|
||
Out DX, AL
|
||
Mov AL, 4+8+32 ; 16-bit data, looping + Wavetable IRQ
|
||
Add DL, 2
|
||
Out DX, AL
|
||
Call GUSDelay
|
||
Out DX, AL
|
||
Sub DL, 2
|
||
|
||
Mov AL, 0Dh
|
||
Out DX, AL
|
||
Mov AL, 3 ; Disable rollover
|
||
Add DL, 2
|
||
Out DX, AL
|
||
Sub DL, 2
|
||
|
||
; Jmp GUSIRQAgain
|
||
|
||
GUSIRQEnd:
|
||
; OK... time to get next block
|
||
; Check whether stereo thing is on..
|
||
;
|
||
LES DI, [ActualDMAPtr]
|
||
|
||
Mov BX, DMASize ; BX = bytes required
|
||
ShR BX, 1
|
||
; BX = samples required
|
||
Mov BP, 8 ; Skip for mono
|
||
Mov CL, 14 ; Shift for mono
|
||
|
||
Cmp Stereo, 0
|
||
JE GUSIRQHandlerMono
|
||
|
||
Mov BP, 4 ; Stereo skip value.
|
||
Dec CL
|
||
|
||
GUSIRQHandlerMono:
|
||
Call SaveEMSPageFrame
|
||
|
||
Cmp MixTransferRemaining, 0
|
||
JNE GUSIRQHandler4
|
||
Assume DS:Nothing
|
||
|
||
GUSIRQHandler3:
|
||
Push BX
|
||
Push CX
|
||
Push BP
|
||
Push ES
|
||
Push DI
|
||
|
||
Call Update
|
||
Call MixSamples
|
||
|
||
Pop DI
|
||
Pop ES
|
||
Pop BP
|
||
Pop CX
|
||
Pop BX
|
||
|
||
GUSIRQHandler4:
|
||
Mov DS, MixSegment
|
||
Mov SI, MixTransferOffset
|
||
Mov DX, BX ; DX = samples to transfer
|
||
Cmp DX, MixTransferRemaining
|
||
JBE GUSIRQHandler5
|
||
|
||
Mov DX, MixTransferRemaining
|
||
|
||
GUSIRQHandler5:
|
||
Push DX
|
||
Cmp CS:Filter, 1
|
||
JB GUSIRQHandler6
|
||
JE GUSIRQHFilter
|
||
|
||
Cmp CS:Stereo, 0
|
||
JE GUSIRQ3QFilterMono
|
||
|
||
GUSIRQ3QFilterStereo:
|
||
Push BX
|
||
|
||
Mov EBX, FilterValue
|
||
Mov EBP, FilterValue2
|
||
ShR DX, 1
|
||
|
||
GUSIRQ3QFilterStereo1:
|
||
Mov EAX, EBX
|
||
Mov ECX, EBP
|
||
Add EAX, [SI]
|
||
Add ECX, [SI+4]
|
||
SAR EAX, 1
|
||
SAR ECX, 1
|
||
Add EBX, EAX
|
||
Add EBP, ECX
|
||
SAR EBX, 1
|
||
SAR EBP, 1
|
||
|
||
Mov EAX, EBX
|
||
SAR EAX, 13
|
||
|
||
Cmp EAX, -8000h
|
||
JL GUS3QFilterStereoClip1
|
||
Cmp EAX, 7FFFh
|
||
JG GUS3QFilterStereoClip2
|
||
|
||
GUSIRQ3QFilterStereo2:
|
||
StosW
|
||
|
||
Mov EAX, EBP
|
||
SAR EAX, 13
|
||
|
||
Cmp EAX, -8000h
|
||
JL GUS3QFilterStereoClip3
|
||
Cmp EAX, 7FFFh
|
||
JG GUS3QFilterStereoClip4
|
||
|
||
GUSIRQ3QFilterStereo3:
|
||
StosW
|
||
|
||
Add SI, 8
|
||
Dec DX
|
||
JNZ GUSIRQ3QFilterStereo1
|
||
|
||
Mov FilterValue, EBX
|
||
Mov FilterValue2, EBP
|
||
|
||
Pop BX
|
||
|
||
Jmp GUSMixTransferEnd
|
||
|
||
GUSIRQ3QFilterMono:
|
||
Push BX
|
||
|
||
Mov EBX, FilterValue
|
||
|
||
GUSIRQ3QFilterMono1:
|
||
Mov EAX, EBX
|
||
Add EAX, [SI]
|
||
SAR EAX, 1
|
||
Add EBX, EAX
|
||
SAR EBX, 1
|
||
Mov EAX, EBX
|
||
SAR EAX, 14
|
||
|
||
Cmp EAX, -8000h
|
||
JL GUS3QFilterMonoClip1
|
||
Cmp EAX, 7FFFh
|
||
JG GUS3QFilterMonoClip2
|
||
|
||
GUSIRQ3QFilterMono2:
|
||
StosW
|
||
|
||
Add SI, 8
|
||
Dec DX
|
||
JNZ GUSIRQ3QFilterMono1
|
||
|
||
Mov FilterValue, EBX
|
||
|
||
Pop BX
|
||
|
||
Jmp GUSMixTransferEnd
|
||
|
||
GUSIRQHFilter:
|
||
Cmp CS:Stereo, 0
|
||
JE GUSIRQHFilterMono
|
||
|
||
GUSIRQHFilterStereo:
|
||
Push BX
|
||
|
||
Mov EBX, FilterValue
|
||
Mov EBP, FilterValue2
|
||
ShR DX, 1
|
||
|
||
GUSIRQHFilterStereo1:
|
||
Add EBX, [SI]
|
||
Add EBP, [SI+4]
|
||
|
||
SAR EBX, 1
|
||
SAR EBP, 1
|
||
|
||
Mov EAX, EBX
|
||
SAR EAX, 13
|
||
|
||
Cmp EAX, -8000h
|
||
JL GUSHFilterStereoClip1
|
||
Cmp EAX, 7FFFh
|
||
JG GUSHFilterStereoClip2
|
||
|
||
GUSIRQHFilterStereo2:
|
||
StosW
|
||
|
||
Mov EAX, EBP
|
||
SAR EAX, 13
|
||
|
||
Cmp EAX, -8000h
|
||
JL GUSHFilterStereoClip3
|
||
Cmp EAX, 7FFFh
|
||
JG GUSHFilterStereoClip4
|
||
|
||
GUSIRQHFilterStereo3:
|
||
StosW
|
||
|
||
Add SI, 8
|
||
Dec DX
|
||
JNZ GUSIRQHFilterStereo1
|
||
|
||
Mov FilterValue, EBX
|
||
Mov FilterValue2, EBP
|
||
|
||
Pop BX
|
||
|
||
Jmp GUSMixTransferEnd
|
||
|
||
GUSIRQHFilterMono:
|
||
Push BX
|
||
|
||
Mov EBX, FilterValue
|
||
|
||
GUSIRQHFilterMono1:
|
||
Add EBX, [SI]
|
||
SAR EBX, 1
|
||
Mov EAX, EBX
|
||
SAR EAX, 14
|
||
|
||
Cmp EAX, -8000h
|
||
JL GUSHFilterMonoClip1
|
||
Cmp EAX, 7FFFh
|
||
JG GUSHFilterMonoClip2
|
||
|
||
GUSIRQHFilterMono2:
|
||
StosW
|
||
|
||
Add SI, 8
|
||
Dec DX
|
||
JNZ GUSIRQHFilterMono1
|
||
|
||
Mov FilterValue, EBX
|
||
|
||
Pop BX
|
||
|
||
Jmp GUSMixTransferEnd
|
||
|
||
GUSIRQHandler6:
|
||
Mov EAX, [SI]
|
||
SAR EAX, CL
|
||
|
||
Cmp EAX, -8000h
|
||
JL GUSIRQHandlerClip1
|
||
Cmp EAX, 7FFFh
|
||
JG GUSIRQHandlerClip2
|
||
|
||
GUSIRQHandler7:
|
||
StosW ; } Memory write
|
||
|
||
Add SI, BP
|
||
Dec DX
|
||
JNZ GUSIRQHandler6
|
||
|
||
GUSMixTransferEnd:
|
||
Pop DX
|
||
|
||
Sub MixTransferRemaining, DX ; } Memory write
|
||
Sub BX, DX
|
||
JNZ GUSIRQHandler3
|
||
|
||
Mov MixTransferOffset, SI ; } Memory write
|
||
|
||
; DMA the data to MixBufferDestination
|
||
Comment ~
|
||
|
||
Mov AX, CS
|
||
Mov DS, AX
|
||
Assume DS:Driver
|
||
|
||
Mov BX, DMASegment
|
||
Xor AX, AX
|
||
Mov DX, DMA
|
||
Mov DI, DMABUFFERLENGTH
|
||
Call SetDMA
|
||
|
||
Mov DX, GUSRegisterSelect
|
||
Mov AL, 42h ; DMA destination
|
||
Out DX, AL
|
||
Mov AX, MixBufferDestination
|
||
Inc DX
|
||
Out DX, AX
|
||
Dec DX
|
||
|
||
Mov AL, 41h ; DMA control register
|
||
Out DX, AL
|
||
Mov AL, 1
|
||
Cmp DMA, 4
|
||
JB DMAType
|
||
|
||
Or AL, 4
|
||
|
||
DMAType:
|
||
Add DL, 2
|
||
Out DX, AL
|
||
|
||
~
|
||
|
||
; Comment ~
|
||
|
||
LDS SI, [ActualDMAPtr]
|
||
Mov DX, GUSRegisterSelect
|
||
|
||
Mov AL, 44h
|
||
Out DX, AL ; High address
|
||
Xor AL, AL
|
||
Add DL, 2
|
||
Out DX, AL
|
||
Sub DL, 2
|
||
|
||
Mov DI, MixBufferDestination
|
||
Mov CX, DMASize
|
||
|
||
Mov AL, 43h
|
||
Out DX, AL
|
||
Inc DX
|
||
|
||
Output1:
|
||
Mov AX, DI
|
||
Out DX, AX
|
||
Add DL, 3
|
||
|
||
Mov AL, [SI]
|
||
Out DX, AL
|
||
|
||
Sub DL, 3
|
||
Inc SI
|
||
Inc DI
|
||
Dec CX
|
||
JNZ Output1
|
||
|
||
; ~
|
||
|
||
Call RestoreEMSPageFrame
|
||
|
||
GUSIRQHandlerEnd:
|
||
Pop ES
|
||
Pop DS
|
||
PopAD
|
||
IRet
|
||
Assume DS:Nothing
|
||
|
||
GUSIRQHandlerClip1:
|
||
Mov AX, 8000h
|
||
Jmp GUSIRQHandler7
|
||
|
||
GUSIRQHandlerClip2:
|
||
Mov AX, 7FFFh
|
||
Jmp GUSIRQHandler7
|
||
|
||
GUSHFilterMonoClip1:
|
||
Mov AX, 8000h
|
||
Jmp GUSIRQHFilterMono2
|
||
|
||
GUSHFilterMonoClip2:
|
||
Mov AX, 7FFFh
|
||
Jmp GUSIRQHFilterMono2
|
||
|
||
GUSHFilterStereoClip1:
|
||
Mov AX, 8000h
|
||
Jmp GUSIRQHFilterStereo2
|
||
|
||
GUSHFilterStereoClip2:
|
||
Mov AX, 7FFFh
|
||
Jmp GUSIRQHFilterStereo2
|
||
|
||
GUSHFilterStereoClip3:
|
||
Mov AX, 8000h
|
||
Jmp GUSIRQHFilterStereo3
|
||
|
||
GUSHFilterStereoClip4:
|
||
Mov AX, 7FFFh
|
||
Jmp GUSIRQHFilterStereo3
|
||
|
||
GUS3QFilterMonoClip1:
|
||
Mov AX, 8000h
|
||
Jmp GUSIRQ3QFilterMono2
|
||
|
||
GUS3QFilterMonoClip2:
|
||
Mov AX, 7FFFh
|
||
Jmp GUSIRQ3QFilterMono2
|
||
|
||
GUS3QFilterStereoClip1:
|
||
Mov AX, 8000h
|
||
Jmp GUSIRQ3QFilterStereo2
|
||
|
||
GUS3QFilterStereoClip2:
|
||
Mov AX, 7FFFh
|
||
Jmp GUSIRQ3QFilterStereo2
|
||
|
||
GUS3QFilterStereoClip3:
|
||
Mov AX, 8000h
|
||
Jmp GUSIRQ3QFilterStereo3
|
||
|
||
GUS3QFilterStereoClip4:
|
||
Mov AX, 7FFFh
|
||
Jmp GUSIRQ3QFilterStereo3
|
||
|
||
EndP GUSIRQHandler
|
||
Assume DS:Nothing
|
||
|
||
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
Proc SetIRQ
|
||
|
||
PushAD
|
||
Push DS
|
||
Push ES
|
||
|
||
Push CS
|
||
Pop DS
|
||
Assume DS:Driver
|
||
|
||
Xor AX, AX
|
||
Mov ES, AX
|
||
|
||
Mov DI, IRQ
|
||
ShL DI, 2
|
||
Add DI, Offset IRQData
|
||
Mov BX, [DI]
|
||
|
||
Mov AX, CS
|
||
ShL EAX, 16
|
||
Mov AX, Offset GUSIRQHandler
|
||
|
||
XChg [ES:BX], EAX
|
||
Mov OldIRQHandler, EAX
|
||
|
||
Mov AX, IMR
|
||
And AX, [DI+2]
|
||
|
||
Out 21h, AL
|
||
Mov AL, AH
|
||
Out 0A1h, AL
|
||
|
||
Pop ES
|
||
Pop DS
|
||
PopAD
|
||
|
||
Ret
|
||
|
||
EndP SetIRQ
|
||
Assume DS:Nothing
|
||
|
||
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
Proc ResetIRQ
|
||
|
||
PushAD
|
||
Push DS
|
||
Push ES
|
||
|
||
Push CS
|
||
Pop DS
|
||
Assume DS:Driver
|
||
|
||
Xor AX, AX
|
||
Mov ES, AX
|
||
|
||
Mov DI, IRQ
|
||
ShL DI, 2
|
||
Mov BX, [IRQData+DI]
|
||
|
||
Mov EAX, OldIRQHandler
|
||
Mov [ES:BX], EAX
|
||
|
||
Pop ES
|
||
Pop DS
|
||
PopAD
|
||
|
||
Ret
|
||
|
||
EndP ResetIRQ
|
||
Assume DS:Nothing
|
||
|
||
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
Proc StartGUS ;
|
||
|
||
PushA
|
||
Push ES
|
||
|
||
Push CS
|
||
Pop DS
|
||
Assume DS:Driver
|
||
|
||
; Setup DMA
|
||
Mov BX, DMASegment
|
||
Xor AX, AX
|
||
Mov DX, DMA
|
||
Mov DI, DMABUFFERLENGTH
|
||
Call SetDMA
|
||
|
||
LES DI, ActualDMAPtr
|
||
Xor AX, AX
|
||
Mov CX, DMABUFFERLENGTH/2
|
||
Rep StosW
|
||
|
||
Mov MixBufferPos, 0
|
||
Mov MixTransferRemaining, 0
|
||
|
||
Mov DX, BasePort
|
||
Mov AL, 1
|
||
Out DX, AL
|
||
|
||
Mov AX, DX
|
||
Call ResetGUS
|
||
|
||
Mov DX, GUSRegisterSelect ; Tell the GUS how many voices
|
||
Mov AL, 0Eh ; to use
|
||
Out DX, AL
|
||
|
||
Add DL, 2 ; DX = BasePort + 105h
|
||
Mov AL, GUSChannels
|
||
Dec AL
|
||
Or AL, 0C0h
|
||
Out DX, AL ; Number of Voices set
|
||
|
||
; Reset each voice
|
||
|
||
Mov CX, 32 ; 32 voices to clear.
|
||
|
||
Sub DL, 3 ; DX = Voice select register
|
||
|
||
GUSResetVoice:
|
||
Mov AL, CL
|
||
Dec AL
|
||
Out DX, AL
|
||
|
||
Inc DX ; DX = BasePort + 103h
|
||
Xor AL, AL ; Voice control register, 8 bit
|
||
Out DX, AL
|
||
|
||
Add DL, 2
|
||
Mov AL, 2
|
||
Out DX, AL ; Stop voice
|
||
Call GUSDelay
|
||
Out DX, AL
|
||
Sub DL, 2
|
||
|
||
Mov AL, 0Dh ; Volume Ramp.
|
||
Out DX, AL
|
||
|
||
Mov AL, 3
|
||
Add DL, 2
|
||
Out DX, AL
|
||
Call GUSDelay
|
||
Out DX, AL
|
||
Sub DL, 2
|
||
|
||
|
||
Mov AL, 6 ; Ramp rate
|
||
Out DX, AL
|
||
|
||
Mov AL, 63 ; Ramp rate
|
||
Add DL, 2
|
||
Out DX, AL
|
||
Sub DL, 2
|
||
|
||
|
||
Mov AL, 9 ; Volume register, 16 bit
|
||
Out DX, AL
|
||
|
||
Inc DX
|
||
Xor AX, AX
|
||
Out DX, AX ; No volume
|
||
Call GUSDelay
|
||
Out DX, AX
|
||
|
||
Sub DL, 2 ; DX = BasePort + 102h = Voice select.
|
||
|
||
Loop GUSResetVoice
|
||
|
||
; OK.. now... gotta clear memory from
|
||
; 0->DMABUFFERLENGTH*2
|
||
|
||
Mov CX, DMABUFFERLENGTH*2
|
||
Xor DI, DI ; DI = destination
|
||
|
||
ClI
|
||
|
||
Inc DX ; DX = register select
|
||
Mov AL, 44h
|
||
Out DX, AL
|
||
|
||
Xor AL, AL
|
||
Add DL, 2
|
||
Out DX, AL
|
||
Sub DL, 2
|
||
|
||
Mov AL, 43h
|
||
Out DX, AL
|
||
Inc DX
|
||
|
||
ClearGUSRAM:
|
||
Mov AX, DI ; Memory location low
|
||
Out DX, AX ; Memory location done.
|
||
|
||
Xor AL, AL
|
||
Add DL, 3
|
||
Out DX, AL
|
||
Sub DL, 3
|
||
|
||
Inc DI
|
||
Dec CX
|
||
JNZ ClearGUSRAM
|
||
|
||
StI
|
||
; OK.. enable interrupt
|
||
Mov DX, BasePort
|
||
Mov AL, 9
|
||
Out DX, AL ; Enables DMA/IRQ
|
||
|
||
Mov DX, GUSRegisterSelect
|
||
Mov AL, 4Ch
|
||
Out DX, AL
|
||
Add DL, 2
|
||
Mov AL, 7
|
||
Out DX, AL ; Enables IRQ
|
||
|
||
; Setup voices
|
||
ClI
|
||
Cmp Stereo, 0
|
||
JE StartGUSMono
|
||
|
||
StartGUSStereo: ; Uses voices 0 and 1
|
||
Mov DX, GUSVoiceSelect
|
||
Xor AL, AL
|
||
Out DX, AL
|
||
Call GUSDelay
|
||
Inc DX
|
||
|
||
Mov AL, 1 ; Freq control
|
||
Out DX, AL
|
||
Inc DX
|
||
Mov AX, 0000100000000000b
|
||
Out DX, AX
|
||
Dec DX
|
||
|
||
Mov AL, 2 ; Starting location high
|
||
Out DX, AL
|
||
Xor AX, AX
|
||
Inc DX
|
||
Out DX, AX
|
||
Dec DX
|
||
|
||
Mov AL, 3 ; Starting location low
|
||
Out DX, AL
|
||
Xor AX, AX
|
||
Inc DX
|
||
Out DX, AX
|
||
Dec DX
|
||
|
||
Mov AL, 4 ; End location high
|
||
Out DX, AL
|
||
Mov AX, HALFENDLOCATIONHIGH
|
||
Xor AX, AX
|
||
Inc DX
|
||
Out DX, AX
|
||
Dec DX
|
||
|
||
Mov AL, 5 ; End location low
|
||
Out DX, AL
|
||
Mov AX, HALFENDLOCATIONLOW
|
||
Inc DX
|
||
Out DX, AX
|
||
Dec DX
|
||
|
||
Mov AL, 9 ; Current volume
|
||
Out DX, AL
|
||
Mov AX, 0EFF0h
|
||
Inc DX
|
||
Out DX, AX
|
||
Call GUSDelay
|
||
Out DX, AX
|
||
Dec DX
|
||
|
||
Mov AL, 0Ah ; Current location high
|
||
Out DX, AL
|
||
Xor AX, AX
|
||
Inc DX
|
||
Out DX, AX
|
||
Dec DX
|
||
|
||
Mov AL, 0Bh ; Current location low
|
||
Out DX, AL
|
||
Xor AX, AX
|
||
Inc DX
|
||
Out DX, AX
|
||
Dec DX
|
||
|
||
Mov AL, 0Ch ; Pan position
|
||
Out DX, AL
|
||
Mov AL, 0 ; Full left.
|
||
Add DL, 2
|
||
Out DX, AL
|
||
Sub DL, 2
|
||
|
||
Mov AL, 0Dh ; Set rollover condition
|
||
Out DX, AL
|
||
Mov AL, 4+2+1 ; Rollover
|
||
Add DL, 2
|
||
Out DX, AL
|
||
Sub DL, 2
|
||
|
||
Mov DX, GUSVoiceSelect
|
||
Mov AL, 1 ; Voice 1
|
||
Out DX, AL
|
||
Call GUSDelay
|
||
Inc DX
|
||
|
||
Mov AL, 1 ; Freq control
|
||
Out DX, AL
|
||
Inc DX
|
||
Mov AX, 0000100000000000b
|
||
Out DX, AX
|
||
Dec DX
|
||
|
||
Mov AL, 2 ; Starting location high
|
||
Out DX, AL
|
||
Xor AX, AX
|
||
Inc DX
|
||
Out DX, AX
|
||
Dec DX
|
||
|
||
Mov AL, 3 ; Starting location low
|
||
Out DX, AL
|
||
Mov AX, 0000001000000000b
|
||
Xor AX, AX
|
||
Inc DX
|
||
Out DX, AX
|
||
Dec DX
|
||
|
||
Mov AL, 4 ; End location high
|
||
Out DX, AL
|
||
Mov AX, 20h ; ENDLOCATIONHIGH
|
||
Inc DX
|
||
Out DX, AX
|
||
Dec DX
|
||
|
||
Mov AL, 5 ; End location low
|
||
Out DX, AL
|
||
Mov AX, 0 ; ENDLOCATIONLOW
|
||
Inc DX
|
||
Out DX, AX
|
||
Dec DX
|
||
|
||
Mov AL, 9 ; Current volume
|
||
Out DX, AL
|
||
Mov AX, 0EFF0h
|
||
Inc DX
|
||
Out DX, AX
|
||
Call GUSDelay
|
||
Out DX, AX
|
||
Dec DX
|
||
|
||
Mov AL, 0Ah ; Current location high
|
||
Out DX, AL
|
||
Xor AX, AX
|
||
Inc DX
|
||
Out DX, AX
|
||
Dec DX
|
||
|
||
Mov AL, 0Bh ; Current location low
|
||
Out DX, AL
|
||
Mov AX, 0000001000000000b
|
||
Inc DX
|
||
Out DX, AX
|
||
Dec DX
|
||
|
||
Mov AL, 0Ch ; Pan position
|
||
Out DX, AL
|
||
Mov AL, 0Fh ; Full right
|
||
Add DL, 2
|
||
Out DX, AL
|
||
Sub DL, 2
|
||
; start voices.
|
||
|
||
Mov AL, 0Dh
|
||
Out DX, AL
|
||
Mov AL, 3
|
||
Add DL, 2
|
||
Out DX, AL
|
||
Sub DL, 2
|
||
|
||
CLI
|
||
|
||
Mov DX, GUSVoiceSelect ; Select voice 0
|
||
Xor AL, AL
|
||
Out DX, AL
|
||
|
||
; Call GUSDelay
|
||
|
||
Inc DX
|
||
Out DX, AL
|
||
Mov AL, 4+32 ; 16-bit data, IRQ enabled
|
||
Add DL, 2
|
||
Out DX, AL
|
||
|
||
; Call GUSDelay
|
||
; Out DX, AL
|
||
|
||
Sub DL, 3
|
||
|
||
Mov AL, 1 ; Select voice 1
|
||
Out DX, AL
|
||
|
||
; Call GUSDelay
|
||
|
||
Inc DX
|
||
Xor AL, AL
|
||
Out DX, AL
|
||
Mov AL, 4+8 ; 16-bit, Loop
|
||
Add DL, 2
|
||
Out DX, AL
|
||
|
||
; Call GUSDelay
|
||
; Out DX, AL
|
||
|
||
Jmp StartGUSEnd
|
||
|
||
StartGUSMono: ; Uses voice 0
|
||
Mov DX, GUSVoiceSelect
|
||
Xor AL, AL
|
||
Out DX, AL
|
||
Call GUSDelay
|
||
Inc DX
|
||
|
||
Mov AL, 1 ; Freq control
|
||
Out DX, AL
|
||
Inc DX
|
||
Mov AX, 0000010000000000b
|
||
Out DX, AX
|
||
Dec DX
|
||
|
||
Mov AL, 2 ; Starting location high
|
||
Out DX, AL
|
||
Xor AX, AX
|
||
Inc DX
|
||
Out DX, AX
|
||
Dec DX
|
||
|
||
Mov AL, 3 ; Starting location low
|
||
Out DX, AL
|
||
Xor AX, AX
|
||
Inc DX
|
||
Out DX, AX
|
||
Dec DX
|
||
|
||
Mov AL, 4 ; End location high
|
||
Out DX, AL
|
||
Mov AX, HALFENDLOCATIONHIGH
|
||
Xor AX, AX
|
||
Inc DX
|
||
Out DX, AX
|
||
Dec DX
|
||
|
||
Mov AL, 5 ; End location low
|
||
Out DX, AL
|
||
Mov AX, HALFENDLOCATIONLOW
|
||
Inc DX
|
||
Out DX, AX
|
||
Dec DX
|
||
|
||
Mov AL, 9 ; Current volume
|
||
Out DX, AL
|
||
Mov AX, 0EFF0h
|
||
Inc DX
|
||
Out DX, AX
|
||
Dec DX
|
||
|
||
Mov AL, 0Ah ; Current location high
|
||
Out DX, AL
|
||
Xor AX, AX
|
||
Inc DX
|
||
Out DX, AX
|
||
Dec DX
|
||
|
||
Mov AL, 0Bh ; Current location low
|
||
Out DX, AL
|
||
Xor AX, AX
|
||
Inc DX
|
||
Out DX, AX
|
||
Dec DX
|
||
|
||
Mov AL, 0Ch ; Pan position
|
||
Out DX, AL
|
||
Mov AL, 8 ; Central.
|
||
Add DL, 2
|
||
Out DX, AL
|
||
Sub DL, 2
|
||
|
||
Mov AL, 0Dh ; Set rollover condition
|
||
Out DX, AL
|
||
Mov AL, 4+2+1 ; Rollover
|
||
Add DL, 2
|
||
Out DX, AL
|
||
Sub DL, 2
|
||
|
||
Xor AL, AL
|
||
Out DX, AL
|
||
Mov AL, 4+32 ; 16-bit data, IRQ enabled
|
||
Add DL, 2
|
||
Out DX, AL
|
||
Call GUSDelay
|
||
Out DX, AL
|
||
|
||
StartGUSEnd:
|
||
StI
|
||
|
||
Pop ES
|
||
PopA
|
||
|
||
Ret
|
||
|
||
|
||
EndP StartGUS
|
||
Assume DS:Nothing
|
||
|
||
;<3B><> InitSound <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
;
|
||
; Sets up any memory required for output
|
||
; Initiates output
|
||
;
|
||
; Parameters: AX = Number of Channels
|
||
;
|
||
; If sucessful, returns:
|
||
; Carry flag clear
|
||
; DS:SI = pointer to text to display
|
||
; AX = parameter 1 in text
|
||
; BX = parameter 2 in text
|
||
; CX = parameter 3 in text
|
||
; DX = parameter 4 in text
|
||
; DI = parameter 5 in text
|
||
;
|
||
; If unsucessful, returns:
|
||
; Carry flag set
|
||
;
|
||
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
Proc InitSound Far
|
||
|
||
Push CS
|
||
Pop DS
|
||
Assume DS:Driver
|
||
|
||
Mov SI, Offset RelocationTable
|
||
|
||
RelocationFix:
|
||
LodsW
|
||
Test AX, AX
|
||
JZ RelocationEnd
|
||
Mov BX, AX
|
||
Mov [BX], DS
|
||
Jmp RelocationFix
|
||
|
||
RelocationEnd:
|
||
Mov AX, BasePort
|
||
Call ResetGUS
|
||
|
||
; SetupMIDI
|
||
Mov DX, BasePort
|
||
Inc DH
|
||
Mov AL, 0FFh
|
||
Out DX, AL
|
||
Mov AL, 0FCh
|
||
Out DX, AL
|
||
|
||
Call GetEMSPageFrame
|
||
Mov EMSPageFrame, AX
|
||
|
||
In AL, 0A1h
|
||
Mov AH, AL
|
||
In AL, 21h
|
||
Mov IMR, AX
|
||
|
||
Mov ECX, IdleUpdateInfoLine
|
||
Mov EDX, GlobalKeyList
|
||
Mov IdleFunctionList, ECX
|
||
Mov GlobalKeyLink2, EDX
|
||
|
||
Mov ECX, FillHeaderFunction
|
||
Mov EDX, DrawHeaderFunction
|
||
Mov FillHeader2, ECX
|
||
Mov ScreenHeader2, EDX
|
||
|
||
; Allocate MixSegment first
|
||
Mov AH, 48h
|
||
Mov BX, 3859+(DMABUFFERLENGTH*2)/16
|
||
; 3859 = (256*2*65+8*44100/(.4*31))/16
|
||
Int 21h
|
||
JNC InitSound1
|
||
|
||
InitSoundNoMemory:
|
||
Mov SI, Offset GUSNoMemoryMsg
|
||
Ret
|
||
|
||
InitSound1:
|
||
Mov MixSegment, AX
|
||
Add AX, 3859
|
||
Mov DMASegment, AX
|
||
|
||
Call SetIRQ
|
||
Call GetSBMixConst
|
||
Call GetTempo
|
||
Call SetTempo
|
||
|
||
Mov SI, Offset GUSMsg
|
||
|
||
Mov AX, BasePort
|
||
Mov BX, IRQ
|
||
Mov CX, DMA
|
||
|
||
Ret
|
||
|
||
EndP InitSound
|
||
Assume DS:Nothing
|
||
|
||
;<3B><> ReInitSound <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
;
|
||
; Reinitialises sound output
|
||
; Initiates sound output
|
||
;
|
||
; Parameters: AX = number of channels.
|
||
;
|
||
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
Proc ReInitSound Far
|
||
|
||
PushA
|
||
Push DS
|
||
Push ES
|
||
|
||
Push CS
|
||
Pop DS
|
||
Assume DS:Driver
|
||
|
||
Call ResetIRQ
|
||
Call SetIRQ
|
||
|
||
Mov SI, Offset ReInitMsg
|
||
Mov BX, 200
|
||
Call SetInfoLine
|
||
|
||
Mov AL, Stereo
|
||
Call SetStereo
|
||
|
||
Pop ES
|
||
Pop DS
|
||
PopA
|
||
|
||
Ret
|
||
|
||
EndP ReInitSound
|
||
Assume DS:Nothing
|
||
|
||
;<3B><> UnInitSound <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
;
|
||
; Stops sound output, releases any memory used by driver
|
||
;
|
||
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
Proc UnInitSound Far
|
||
|
||
Mov AX, BasePort
|
||
Call ResetGUS
|
||
|
||
Mov DX, BasePort
|
||
Inc DH
|
||
Mov AL, 0FFh
|
||
Out DX, AL ; Stop MIDI
|
||
|
||
Mov AX, IMR
|
||
Out 21h, AL
|
||
Mov AL, AH
|
||
Out 0A1h, AL
|
||
|
||
Mov AX, MixSegment
|
||
Test AX, AX
|
||
JZ UnInitSound1
|
||
|
||
Mov ES, AX
|
||
Mov AH, 49h ; Release MixSegment
|
||
Int 21h
|
||
|
||
Call ResetIRQ
|
||
|
||
UnInitSound1:
|
||
Ret
|
||
|
||
EndP UnInitSound
|
||
|
||
;<3B><> Poll <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
;
|
||
; This procedure is called as often as possible by IT.EXE
|
||
; AX = Playmode (0 for nothing in particular, 1 = pattern, 2 = song)
|
||
;
|
||
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
Proc Poll Far
|
||
|
||
Mov DX, CS:GUSVoiceSelect
|
||
Xor AL, AL
|
||
Out DX, AL
|
||
Inc DX
|
||
Mov AL, 8Ah
|
||
Out DX, AL
|
||
Inc DX
|
||
In AX, DX
|
||
ShL EAX, 16
|
||
Dec DX
|
||
Mov AL, 8Bh
|
||
OUt DX, AL
|
||
Inc DX
|
||
In AX, DX
|
||
ShR EAX, 9
|
||
Mov CS:Voice0Position, EAX
|
||
|
||
Mov DX, CS:GUSVoiceSelect
|
||
Mov AL, 1
|
||
Out DX, AL
|
||
Inc DX
|
||
Mov AL, 8Ah
|
||
Out DX, AL
|
||
Inc DX
|
||
In AX, DX
|
||
ShL EAX, 16
|
||
Dec DX
|
||
Mov AL, 8Bh
|
||
OUt DX, AL
|
||
Inc DX
|
||
In AX, DX
|
||
ShR EAX, 9
|
||
Mov CS:Voice1Position, EAX
|
||
|
||
Call [CS:UARTBufferEmpty]
|
||
JNC MIDIEnd
|
||
|
||
Mov DX, [CS:BasePort]
|
||
Inc DH
|
||
In AL, DX
|
||
Test AL, 1
|
||
JZ MIDIEnd
|
||
|
||
Inc DX
|
||
In AL, DX
|
||
Cmp AL, 0F0h
|
||
JAE MIDIEnd
|
||
|
||
Call [CS:UARTSend]
|
||
|
||
MIDIEnd:
|
||
|
||
Ret
|
||
|
||
EndP Poll
|
||
|
||
;<3B><> SetTempo <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
;
|
||
; Parameters: BX = tempo
|
||
;
|
||
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
Proc SetTempo Far
|
||
|
||
Push AX
|
||
Push BX
|
||
Push DX
|
||
|
||
Push BX
|
||
|
||
Mov AX, MixSpeed
|
||
Mov BX, AX
|
||
Xor DX, DX
|
||
|
||
ShL AX, 1
|
||
RCL DX, 1 ; DX:AX = Mixspeed*2
|
||
|
||
ShR BX, 1 ; BX = Mixspeed/2
|
||
|
||
Add AX, BX
|
||
AdC DX, 0 ; DX:AX = Mixspeed*2.5
|
||
|
||
Pop BX ; BX = tempo
|
||
Div BX
|
||
|
||
Mov BytesToMix, AX
|
||
|
||
Pop DX
|
||
Pop BX
|
||
Pop AX
|
||
|
||
Ret
|
||
|
||
EndP SetTempo
|
||
|
||
;<3B><> SetMixVolume <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
;
|
||
; Parameters: AX = MixVolume
|
||
;
|
||
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
Proc SetMixVolume Far
|
||
|
||
PushA
|
||
Push DS
|
||
|
||
Mov BX, AX ; BX = MixVolume
|
||
Mov CS:MixVolume, BX
|
||
|
||
Mov AX, CS:MixSegment
|
||
Test AX, AX
|
||
JZ SetMixVolume2
|
||
|
||
Mov DS, AX
|
||
|
||
Mov CX, MIXTABLESIZE/2
|
||
Mov SI, MIXTABLESIZE-2; Starting point - working backwards
|
||
|
||
SetMixVolume1:
|
||
Mov AX, CX
|
||
|
||
Dec AX ; AH = volume, AL = wave value.
|
||
Xor DX, DX
|
||
XChg AH, DL ; DL = Volume, AX = wave value
|
||
CBW
|
||
|
||
IMul DX ; DX:AX = Volume * Wave Value
|
||
; Ranges -8192->8128
|
||
|
||
IMul BX ; DX:AX = Volume * Wave Value * Mixing Volume
|
||
; Ranges -1048576->1040384
|
||
|
||
Add AX, 64
|
||
AdC DX, 0
|
||
|
||
ShRD AX, DX, 7
|
||
Mov [SI], AX
|
||
Sub SI, 2
|
||
|
||
Loop SetMixVolume1
|
||
|
||
SetMixVolume2:
|
||
Pop DS
|
||
PopA
|
||
|
||
Ret
|
||
|
||
EndP SetMixVolume
|
||
|
||
;<3B><> SetStereo <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
;
|
||
; Parameters: AL = Stereo on/off, 0 = off.
|
||
;
|
||
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
Proc SetStereo Far
|
||
|
||
Cmp CS:MixSegment, 0
|
||
JE SetStereo1
|
||
|
||
Mov CS:Stereo, AL
|
||
Call StartGUS
|
||
|
||
SetStereo1:
|
||
Ret
|
||
|
||
EndP SetStereo
|
||
|
||
;<3B><> LoadSample <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
;
|
||
; Parameters: AX = sample to load
|
||
; DS:SI points to sample header
|
||
; ES:0 points to first sample
|
||
;
|
||
; Returns: **Carry set if NO error**
|
||
; **Carry clear if error**
|
||
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
include loadsam.inc
|
||
|
||
;<3B><> ReleaseSample <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
;
|
||
; Parameters: AX = sample to release
|
||
; DS:SI points to sample header
|
||
;
|
||
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
Proc ReleaseSample Far
|
||
|
||
Ret
|
||
|
||
EndP ReleaseSample
|
||
|
||
;<3B><> ResetMemory <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
;
|
||
; Frees all on-board memory
|
||
;
|
||
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
Proc ResetMemory Far
|
||
|
||
Ret
|
||
|
||
EndP ResetMemory
|
||
|
||
;<3B><> GetStatus <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
;
|
||
; Frees all on-board memory
|
||
;
|
||
; Returns text to show on status line, AX = display parameter
|
||
; Carry set if not to show anything.
|
||
;
|
||
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
Proc GetStatus Far
|
||
|
||
StC
|
||
Ret
|
||
|
||
EndP GetStatus
|
||
|
||
;<3B><> SoundCardScreen <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
;
|
||
; Function to have driver interactive part of program
|
||
;
|
||
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
Proc SoundCardScreen Far
|
||
|
||
Mov AX, 5
|
||
Mov SI, 1
|
||
Mov CX, CS
|
||
Mov DX, Offset GUSScreenList
|
||
|
||
ClC
|
||
Ret
|
||
|
||
EndP SoundCardScreen
|
||
|
||
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
Proc GetVariable Far ; Returns AX, given DI
|
||
|
||
Ret
|
||
|
||
EndP GetVariable
|
||
|
||
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
Proc SetVariable Far ; Given AX, DI
|
||
|
||
Ret
|
||
|
||
EndP SetVariable
|
||
Assume DS:Nothing
|
||
|
||
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
EndDriver:
|
||
|
||
;******** Provided Variable Table *************
|
||
|
||
MaxNumberOfChannels DW 0FFFFh ; Maximum number of channels the
|
||
; driver can handle.
|
||
|
||
StopAfterPlay DW 0
|
||
DefaultChannels DW 64
|
||
DW 5 Dup (0)
|
||
|
||
|
||
;******** Provided Procedure Table *************
|
||
|
||
ProvidedTableStart:
|
||
|
||
DW Offset DetectCard
|
||
|
||
DW Offset InitSound ; Playing related
|
||
DW Offset ReinitSound
|
||
DW Offset UninitSound
|
||
|
||
DW Offset Poll
|
||
|
||
DW Offset SetTempo ; Sound variable related
|
||
DW Offset SetMixVolume
|
||
DW Offset SetStereo
|
||
|
||
DW Offset LoadSample ; Sample related
|
||
DW Offset ReleaseSample
|
||
DW Offset ResetMemory
|
||
DW Offset GetStatus ; Returns string to show on status line
|
||
|
||
DW Offset SoundCardScreen ; Sound card 'screen'
|
||
|
||
DW Offset GetVariable ; For interface
|
||
DW Offset SetVariable
|
||
|
||
ProvidedTableEnd:
|
||
DW 32-(ProvidedTableEnd-ProvidedTableStart)/2 Dup (0)
|
||
|
||
EndS
|
||
|
||
End
|