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dpvm/it/SoundDrivers/SB16B.ASM

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initial commit
2024-01-30 11:24:04 -08:00
.386P
Segment DriverHeader PARA Public 'Code' Use16
Assume CS:Driver, DS:Nothing
;***** Driver Header *******
include drhead.inc
EndS
Segment Driver PARA Public 'Code' Use16
Assume CS:Driver, DS:Nothing
ORG 0
StartDriver:
include vtable.inc
;******** Required ProcedureTable *************
include reqproc.inc
;**********************************
STEREOENABLED EQU 1
DMABUFFERLENGTH EQU 8192
MIXRESOLUTION EQU 16 ; 16 bit mixing for the SB16
MIXTABLESIZE EQU 2*256*65
SB16Msg DB "Sound Blaster 16 detected", 13
DB "Port ", 0FDh, "Xh, IRQ ", 0FDh, "D, DMA ", 0FDh, "D", 0
SB16NoMemoryMsg DB "Sound Blaster 16 detected", 13
DB "Error: Insufficient memory", 0
ReinitMsg DB "Sound Blaster 16 reinitialised", 0
DSPVersion DW 0
DSPIRQValue DB 0
DSPDMAValue DB 0
Forced DB 0
Stereo DB 0
BytesToMix DW 1000
SBMixConst DB 0
MixSegment DW 0
DMASegment DW 0
MixSegmentLength DW 0
MixTransferOffset DW 0
MixTransferRemaining DW 0
CONFIGURATIONOFFSET EQU $+128
CONFIGSIZE EQU 8
MixMode DW 0
MixModeOffset DW 0
Filter DW 0
DMASize DW 2048
IMR DW 0
OldIRQHandler DD 0
FilterValue DD 0
FilterValue2 DD 0
MIDIPort DW 0
MIDIBuffer DB 256 Dup (0)
MIDIBufferHead DB 0
MIDIBufferTail DB 0
IRQData Label Word
DW 20h, 1111111111111110b ; IRQ 0
DW 24h, 1111111111111101b ; IRQ 1
DW 28h, 1111110111111011b ; IRQ 2
DW 2Ch, 1111111111110111b ; IRQ 3
DW 30h, 1111111111101111b ; IRQ 4
DW 34h, 1111111111011111b ; IRQ 5
DW 38h, 1111111110111111b ; IRQ 6
DW 3Ch, 1111111101111111b ; IRQ 7
DW 1C0h, 1111111011111011b ; IRQ 8
DW 1C4h, 1111110111111011b ; IRQ 9
DW 1C8h, 1111101111111011b ; IRQ 10
DW 1CCh, 1111011111111011b ; IRQ 11
DW 1D0h, 1110111111111011b ; IRQ 12
DW 1D4h, 1101111111111011b ; IRQ 13
DW 1D8h, 1011111111111011b ; IRQ 14
DW 1DCh, 0111111111111011b ; IRQ 15
;**********************************
SB16ScreenList Label
DW 8
DW Near Ptr IdleFunctionList
DW Near Ptr GlobalKeyLink
DW Near Ptr FullScreenBox ; 0
DW Near Ptr ScreenHeader
DW Near Ptr FillHeader
DW Near Ptr SB16HeaderLine
DW Near Ptr VolumeText
DW Near Ptr VolumeBox1
DW Near Ptr VolumeBox2
DW Near Ptr DriverText
DW Near Ptr MasterVolumeLeft ; 8
DW Near Ptr MasterVolumeRight ; 9
DW Near Ptr TrebleVolumeLeft ; 10
DW Near Ptr TrebleVolumeRight ; 11
DW Near Ptr BassVolumeLeft ; 12
DW Near Ptr BassVolumeRight ; 13
DW Near Ptr MixFrequencyText
DW 0
SB16HeaderLine DW 10
DB "Sound Blaster 16 Driver", 0
DriverText DW 1
DB 31, 48
DB 21h
DB "Sound Blaster 16 Driver 1.4 for Impulse Tracker", 0
VolumeText DW 1
DB 2, 13
DB 20h
DB "Master Volume Left", 13
DB "Master Volume Right", 13
DB 13
DB 13
DB "Treble Left", 13
DB "Treble Right", 13
DB "Bass Left", 13
DB "Bass Right", 13
DB 0
MixFrequencyText DW 1
DB 2, 23
DB 20h
DB "Playback Frequency: ", 0FDh, "DHz", 0
MixSpeed DW 45454
VolumeBox1 DW 0
DB 21, 12, 27, 15
DB 25
VolumeBox2 DW 0
DB 14, 16, 18, 21
DB 25
GlobalKeyLink DB 7
GlobalKeyLink2 DD 0
IdleFunctionList DD 0
DD 0
FillHeader DW 8
FillHeader2 DD 0
FullScreenBox DW 0
DB 0, 0, 79, 49
DB 4
ScreenHeader DW 8
ScreenHeader2 DD 0
MasterVolumeLeft DW 9
DB 22, 13
DW 0, 31
DW 9, 0
DW 0FFFFh, 9, 0FFFFh, 0FFFFh
DW 0FFFFh, 0FFFFh
MasterVolumeRight DW 9
DB 22, 14
DW 0, 31
DW 9, 1
DW 8, 10, 0FFFFh, 0FFFFh
DW 0FFFFh, 0FFFFh
TrebleVolumeLeft DW 9
DB 15, 17
DW 0, 15
DW 9, 2
DW 9, 11, 0FFFFh, 0FFFFh
DW 0FFFFh, 0FFFFh
TrebleVolumeRight DW 9
DB 15, 18
DW 0, 15
DW 9, 3
DW 10, 12, 0FFFFh, 0FFFFh
DW 0FFFFh, 0FFFFh
BassVolumeLeft DW 9
DB 15, 19
DW 0, 15
DW 9, 4
DW 11, 13, 0FFFFh, 0FFFFh
DW 0FFFFh, 0FFFFh
BassVolumeRight DW 9
DB 15, 20
DW 0, 15
DW 9, 5
DW 12, 0FFFFh, 0FFFFh, 0FFFFh
DW 0FFFFh, 0FFFFh
VolumeTable DB 6 Dup (0)
; <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>
MixBufferPos DW 0
include dma.inc
include mix.inc
include m12bit.mix
MixFunctionTables Label
include m12bit.inc ; contains the tables
;<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 SBOut ; AL = data
; DX = 2xCh
Push AX
SBOut1:
In AL, DX
Test AL, AL
JS SBOut1
Pop AX
Out DX, AL
Ret
EndP SBOut
;<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 SBIn ; DX = 2xEh, returns AL
SBIn1:
In AL, DX
Test AL, AL
JNS SBIn1
Add DL, 0Ah-0Eh ; DX = 2xAh -> Data read port
In AL, DX
Add DL, 0Eh-0Ah
Ret
EndP SBIn
;<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 DetectUART ; Given DX = Port
; From SB-DevKit
ClI
Inc DX
Xor CX, CX
DetectUART1:
In AL, DX
Test AL, 40h ; Ready for output
LoopNZ DetectUART1
JNZ DetectUARTError
Mov AL, 0FFh ; Reset!
Out DX, AL
Xor CX, CX
DetectUART2:
In AL, DX
Test AL, 80h
JNZ DetectUART3
Dec DX
In AL, DX
Inc DX
Cmp AL, 0FEh
JE DetectUART4
DetectUART3:
Loop DetectUART2
DetectUARTError:
StI
StC
Ret
DetectUART4: ; Now to shove it into 'intelligent' mode.
Xor CX, CX
DetectUART5:
In AL, DX
Test AL, 40h
LoopNZ DetectUART5
JNZ DetectUARTError
Mov AL, 3Fh ; Intelligent mode!
Out DX, AL
DetectUART6:
Xor CX, CX
DetectUART7:
In AL, DX
Test AL, 80h
JNZ DetectUART8
Dec DX
In AL, DX
Inc DX
Cmp AL, 0FEh
JE DetectUART9
DetectUART8:
Loop DetectUART7
Jmp DetectUARTError
DetectUART9:
StI
ClC
Ret
Comment ~
ClI
Mov BH, 3 ; Try to init port twice.
DetectUART1:
Mov BL, 64 ; 64 byte buffer
Inc DX
Mov AL, 0FFh
Out DX, AL
Mov AL, 3Fh
Out DX, AL
DetectUART2:
Mov CX, 04000h
DetectUART3:
In AL, DX
Test AL, 80h
LoopNZ DetectUART3
JZ DetectUART4
Dec BH
JNZ DetectUART1
StI
StC
Ret
DetectUART4:
Dec DX
In AL, DX
Inc DX
Cmp AL, 0FEh ; UART acknowledge.
JE DetectUART5
Dec BL
JNZ DetectUART2
Dec BH
JNZ DetectUART1
DetectUART6:
StC
DetectUART5:
StI
Ret
~
EndP DetectUART
;<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 ReinitUART
Mov DX, MIDIPort
Test DX, DX
JZ ReinitUART1
Call DetectUART
ReinitUART1:
Ret
EndP ReinitUART
;<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 ResetUART
Mov DX, MIDIPort
Test DX, DX
JZ ResetUART1
Inc DX
Mov AL, 0FFh
Out DX, AL
ResetUART1:
Ret
EndP ResetUART
;<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 SBGetRegister
Out DX, AL
Inc DX
In AL, DX
Dec DX
Ret
EndP SBGetRegister
;<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, 45454
Cmp AX, CX
JA GetSBMixConst1
Mov CX, 12000
Cmp AX, CX
JB GetSBMixConst1
Mov CX, AX
GetSBMixConst1:
Mov AX, 1000
Mul AX
Div CX
Mov AH, AL
Neg AH
Mov SBMixConst, AH
MovZX BX, AL
Mov AX, 1000
Mul AX
Div BX
Mov MixSpeed, AX
Pop DS
PopA
Ret
EndP GetSBMixConst
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 ResetDSP Far ; AX = Port
Push AX
Push CX
Push DX
Mov DX, AX
Add DL, 6
Mov AL, 1
Out DX, AL
In AL, DX
In AL, DX
In AL, DX
In AL, DX
Xor AL, AL
Out DX, AL
Add DL, 8
Mov CX, 200
ResetDSP1:
In AL, DX
Test AL, AL
JS ResetDSP2
Loop ResetDSP1
Jmp ResetDSP3
ResetDSP2:
Sub DL, 4
In AL, DX
Cmp AL, 0AAh
JE ResetDSP4
Add DL, 4
Loop ResetDSP1
ResetDSP3:
StC
ResetDSP4:
Pop DX
Pop CX
Pop AX
Ret
EndP ResetDSP
;<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 ResetDSPIRQ
Mov DX, CS:BasePort
Add DL, 4
Mov AH, CS:DSPIRQValue
Mov AL, 80h
Out DX, AX
Ret
EndP ResetDSPIRQ
;<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 ResetDSPDMA
Mov DX, CS:BasePort
Add DL, 4
Mov AH, CS:DSPDMAValue
Mov AL, 81h
Out DX, AX
Ret
EndP ResetDSPDMA
; <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 AX, BasePort
Cmp AX, 0FFFFh
JE DetectCard1
Cmp AX, 210h
JB DetectCard9
Cmp AX, 280h
JA DetectCard9
Call ResetDSP
JNC DetectCard2
Ret
DetectCard1:
Mov AX, 210h
DetectCard2:
Call ResetDSP
JNC DetectCard3
Add AL, 10h
Cmp AL, 80h
JBE DetectCard2
DetectCard9:
StC
Ret
DetectCard3: ; OK... DSP found.
; Get DSP version
Mov BasePort, AX
Mov DX, AX
Add DL, 0Ch ; 2xCh -> Data ready to send...
DetectCardOuputLoop1:
In AL, DX
Test AL, AL
JS DetectCardOuputLoop1
Mov AL, 0E1h ; Get DSP version command
Out DX, AL
Add DL, 0Eh-0Ch ; DX = 2xEh -> Data available status
Call SBIn
Mov AH, AL ; AH = Major version number
Call SBIn ; AL = Minor version number
Cmp AH, 4 ; SB DSP = 4.00+
JAE DetectCard5
DetectCard4:
StC
Ret
DetectCard5:
Mov DSPVersion, AX
Add DL, 04h-0Eh ; 2x4h = Mixer index port
Mov AL, 80h ; IRQ select
Out DX, AL
Inc DL ; 2x5h = Mixer data port
In AL, DX
Dec DL
Mov DSPIRQValue, AL
; OK.. now get IRQ, or set IRQ
Mov BX, IRQ
Cmp BX, 0FFFFh
JE DetectCardIRQ1
Cmp Forced, 0
JE DetectCardIRQ1
Mov AH, 11h
Cmp BL, 2
JE SetCardIRQ1
Cmp BL, 9
JE SetCardIRQ1
Mov AH, 12h
Cmp BL, 5
JE SetCardIRQ1
Mov AH, 14h
Cmp BL, 7
JE SetCardIRQ1
Mov AH, 18h
Cmp BL, 10
JE SetCardIRQ1
StC
Ret
SetCardIRQ1:
Mov AL, 80h
Out DX, AL
Inc DL
Mov AL, AH
Out DX, AL
Dec DL
Jmp DetectCard6
DetectCardIRQ1:
Mov BX, 2
Test AL, 1
JNZ DetectCardIRQ2
Mov BL, 5
Test AL, 2
JNZ DetectCardIRQ2
Mov BL, 7
Test AL, 4
JNZ DetectCardIRQ2
Mov BL, 10
Test AL, 8
JNZ DetectCardIRQ2
StC
Ret
DetectCardIRQ2:
Cmp IRQ, 0FFFFh
JE DetectCardIRQ3
Cmp BX, IRQ
JE DetectCard6
StC
Ret
DetectCardIRQ3:
Mov IRQ, BX
DetectCard6: ; Detect DMA
Mov AL, 81h ; DMA select
Out DX, AL
Inc DL
In AL, DX ; AL = DMA
Dec DL
Mov DSPDMAValue, AL
Mov BX, DMA
Cmp BX, 0FFFFh
JE DetectCardDMA1
Cmp Forced, 0
JE DetectCardDMA1
Mov CL, 1
Cmp BX, 1
JB SetCardDMA1
Mov CL, 2
JE SetCardDMA1
Cmp BX, 3
JB DetectCard7
Mov CL, 8
JE DetectCard7
Mov CL, 20h
Cmp BX, 5
JB DetectCard7
JE SetCardDMA1
Mov CL, 80h
Cmp BX, 7
JA DetectCard7
JE SetCardDMA1
Mov CL, 40h
SetCardDMA1:
And AL, 0Bh
Test CL, 0Bh
JZ SetCardDMA4
Xor AL, AL
SetCardDMA4:
Or CL, AL
Mov AL, 81h
Out DX, AL
Inc DL
Mov AL, CL
Out DX, AL
Jmp DetectCard7
DetectCardDMA1:
Mov BX, 5
Test AL, 20h
JNZ DetectCardDMA2
Inc BL
Test AL, 40h
JNZ DetectCardDMA2
Inc BL
Test AL, 80h
JNZ DetectCardDMA2
Mov BL, 0
Test AL, 1
JNZ DetectCardDMA2
Inc BL
Test AL, 2
JNZ DetectCardDMA2
Add BL, 2
Test AL, 8
JNZ DetectCardDMA2
DetectCard8:
Call ResetDSPIRQ
StC
Ret
DetectCardDMA2:
Cmp DMA, 0FFFFh
JE DetectCardDMA3
Cmp BX, DMA
JNE DetectCard8
DetectCardDMA3:
Mov DMA, BX
DetectCard7:
Mov EAX, 'Jeff'
ClC
Ret
EndP DetectCard
Assume DS:Nothing
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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
Mov MixTransferOffset, DI ; } Memory write
Cmp Stereo, 0
JE MixSamples1
Add DX, DX
MixSamples1:
Rep StosD ; } Memory write
MixSamplesCont:
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
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
Cmp Stereo, 0
JNE Mix0ModeStereo
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
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
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Proc AckIRQ
Assume DS:Driver
Mov AL, 20h
Cmp IRQ, 7
JBE AckIRQ1
Out 0A0h, AL
AckIRQ1:
Out 20h, AL
Ret
EndP AckIRQ
Assume DS:Nothing
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Proc CheckMIDI
Push DS
Push CS
Pop DS
Assume DS:Driver
Xor BX, BX
Mov DX, MIDIPort
Mov BL, [MIDIBufferTail]
Test DX, DX
JZ CheckMIDIEnd
Inc DX
Mov CX, 0FFFFh
CheckMIDIAgain:
In AL, DX
Test AL, 80h
LoopNZ CheckMIDIAgain
Dec DX
In AL, DX
Cmp AL, 0F0h
JAE CheckMIDIEnd
Inc BL
Cmp BL, MIDIBufferHead
JE CheckMIDIEnd
Mov [MIDIBuffer+BX], AL
Mov [MIDIBufferTail], BL
; Jmp CheckMIDIAgain
CheckMIDIEnd:
Pop DS
Ret
EndP CheckMIDI
Assume DS:Nothing
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Proc SB16IRQHandler
PushAD
Push DS
Push ES
CLD
Mov AX, CS
Mov DS, AX
Assume DS:Driver
Mov DX, BasePort
Add DL, 4 ; Mixer Port
Mov AL, 82h
Out DX, AL
Inc DL ; DX = BasePort+5
In AL, DX
Comment ~
Test AL, 1
JZ SB8BitDigitalInterruptEnd
SB8BitDigitalInterrupt:
Push AX
Add DL, 0Eh-5
In AL, DX
Pop AX
SB8BitDigitalInterruptEnd:
~
Test AL, 4
JZ SBMIDIInterruptEnd
Push AX
Call CheckMIDI
Pop AX
SBMIDIInterruptEnd:
Test AL, 2
JNZ SBDigitalInterrupt
Call AckIRQ
Jmp SBIRQEnd
SBDigitalInterrupt:
Mov DX, BasePort
Add DL, 0Fh
In AL, DX ; 16-bit IRQ ack.
Call AckIRQ
Mov AX, MixBufferPos
Mov BX, AX
Mul DMASize
Cmp AX, DMABUFFERLENGTH
JB SB16IRQHandler2
Xor AX, AX
Xor BX, BX
SB16IRQHandler2:
Inc BX
Mov MixBufferPos, BX
; OK... time to get next block
; Check whether stereo thing is on..
;
LES DI, [ActualDMAPtr]
Add DI, AX
Mov BX, DMASize ; BX = bytes required
ShR BX, 1
; BX = samples required
Mov BP, 4 ; Skip for mono
Mov CL, 2 ; Shift for mono
Cmp Stereo, 0
JE SB16IRQHandlerMono
ShR BP, 1
Inc CL
SB16IRQHandlerMono:
Call SaveEMSPageFrame
Cmp MixTransferRemaining, 0
JNE SB16IRQHandler4
Assume DS:Nothing
SB16IRQHandler3:
Push BX
Push CX
Push BP
Push ES
Push DI
Call Update
Call MixSamples
Pop DI
Pop ES
Pop BP
Pop CX
Pop BX
SB16IRQHandler4:
Mov DS, MixSegment
Mov SI, MixTransferOffset
Mov DX, BX ; DX = samples to transfer
Cmp DX, MixTransferRemaining
JBE SB16IRQHandler5
Mov DX, MixTransferRemaining
SB16IRQHandler5:
Push DX
SB16IRQHandler6:
MovSX EAX, Word Ptr [SI]
SAL EAX, CL
Cmp EAX, -8000h
JL SB16IRQHandlerClip1
Cmp EAX, 7FFFh
JG SB16IRQHandlerClip2
SB16IRQHandler7:
StosW ; } Memory write
Add SI, BP
Dec DX
JNZ SB16IRQHandler6
SB16MixTransferEnd:
Pop DX
Sub MixTransferRemaining, DX ; } Memory write
Sub BX, DX
JNZ SB16IRQHandler3
Mov MixTransferOffset, SI ; } Memory write
Call RestoreEMSPageFrame
SBIRQEnd:
Pop ES
Pop DS
PopAD
IRet
SB16IRQHandlerClip1:
Mov AX, 8000h
Jmp SB16IRQHandler7
SB16IRQHandlerClip2:
Mov AX, 7FFFh
Jmp SB16IRQHandler7
EndP SB16IRQHandler
Assume DS:Nothing
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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 SB16IRQHandler
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
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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
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Proc StartSB16 ;
PushA
Push ES
; 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
Add DL, 0Ch
Mov AL, 0D1h ; turn on speaker
Call SBOut
Mov AL, 40h ; time constant
Call SBOut
Mov AL, SBMixConst
Call SBOut
Mov AL, 0B6h ; 16 bit, DAC
Call SBOut
Mov AL, Stereo
ShL AL, 5
Or AL, 10h
Call SBOut
Mov AX, DMASize
ShR AX, 1
Dec AX
Call SBOut ; DMALength, Lo
Mov AL, AH
Call SBOut
Pop ES
PopA
Ret
Assume DS:Nothing
EndP StartSB16
;<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 GetMixerRegisters
Push DS
Push CS
Pop DS
Assume DS:Driver
Pop DS
Ret
EndP GetMixerRegisters
Assume DS:Nothing
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;<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
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
Mov DX, BasePort
Add DL, 4
Mov AL, 30h
Call SBGetRegister
ShR AL, 3
Mov VolumeTable, AL
Mov AL, 31h
Call SBGetRegister
ShR AL, 3
Mov [VolumeTable+1], AL
Mov AL, 44h
Call SBGetRegister
ShR AL, 4
Mov [VolumeTable+2], AL
Mov AL, 45h
Call SBGetRegister
ShR AL, 4
Mov [VolumeTable+3], AL
Mov AL, 46h
Call SBGetRegister
ShR AL, 4
Mov [VolumeTable+4], AL
Mov AL, 47h
Call SBGetRegister
ShR AL, 4
Mov [VolumeTable+5], AL
Call GetSBMixConst
; Parags to allocate = (4/(.4*31*16))*MixSpeed + 2080
; = .02016129*MixSpeed = (65536*.04032258*MixSpeed) / 65536
Mov AX, 1322
Mul MixSpeed
Add AX, 0FFFFh
AdC DX, 2080
Mov BX, (DMABUFFERLENGTH*2)/16
Add BX, DX
; Allocate MixSegment first
Mov AH, 48h
Int 21h
JNC InitSound1
InitSoundNoMemory:
Mov SI, Offset SB16NoMemoryMsg
Ret
InitSound1:
Mov MixSegment, AX
Add AX, DX
Mov DMASegment, AX
Sub DX, 2080
Mov MixSegmentLength, DX
Call SetIRQ
Call GetTempo
Call SetTempo
Mov DX, 330h
Call DetectUART
JC DetectMIDI1
Mov MIDIPort, 330h
Jmp DetectMIDIEnd
DetectMIDI1:
Mov DX, 300h
Call DetectUART
JC DetectMIDIEnd
Mov MIDIPort, 300h
DetectMIDIEnd:
Mov SI, Offset SB16Msg
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
Mov AX, BasePort
Mov DX, AX
Call ResetDSP
Call ResetUART
Call ResetIRQ
; Delay..
Mov DX, BasePort
Add DL, 0Ch
Mov CX, 1000
ReInitSound1:
In AL, DX
Loop ReInitSound1
Call SetIRQ
Call ReinitUART
Mov SI, Offset ReInitMsg
Mov BX, 40
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 DX, CS:BasePort
Add DL, 0Ch
Mov AL, 0D3h
Call SBOut
Mov AL, 0D5h
Call SBOut
Mov AL, 0D9h
Call SBOut
Mov AL, 0D5h
Call SBOut
Call ResetUART
Mov AX, BasePort
Call ResetDSP
Call ResetDSPDMA
Call ResetDSPIRQ
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
Push CS
Pop DS
Assume DS:Driver
Poll1:
Call [UARTBufferEmpty]
JNC PollEnd
Xor BX, BX
ClI
Mov BL, MIDIBufferHead
Cmp BL, MIDIBufferTail
JZ PollEnd ; Nothing in queue
Inc BL
Mov AL, [MIDIBuffer+BX]
Mov MIDIBufferHead, BL
Call [UARTSend]
Jmp Poll1
PollEnd:
StI
Ret
EndP Poll
Assume DS:Nothing
;<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 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
Dec CX
JNZ 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
Mov AX, CS:BasePort
Call ResetDSP
Mov ES, CS:MixSegment
Mov CX, CS:MixSegmentLength
Mov DI, MIXTABLESIZE
ShL CX, 2
Xor EAX, EAX
Rep StosD
Call StartSB16
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 SB16ScreenList
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
Xor AH, AH
Mov AL, [CS:VolumeTable+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
Push DS
Push DX
Push CS
Pop DS
Assume DS:Driver
Mov [VolumeTable+DI], AL
Mov DX, BasePort
Add DL, 4
Mov AL, 30h
Mov AH, [VolumeTable]
ShL AH, 3
Out DX, AX
Mov AL, 31h
Mov AH, [VolumeTable+1]
ShL AH, 3
Out DX, AX
Mov AL, 44h
Mov AH, [VolumeTable+2]
ShL AH, 4
Out DX, AX
Mov AL, 45h
Mov AH, [VolumeTable+3]
ShL AH, 4
Out DX, AX
Mov AL, 46h
Mov AH, [VolumeTable+4]
ShL AH, 4
Out DX, AX
Mov AL, 47h
Mov AH, [VolumeTable+5]
ShL AH, 4
Out DX, AX
Pop DX
Pop DS
Ret
EndP SetVariable
Assume DS:Nothing
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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