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impulsetracker/SoundDrivers/SBDRV.ASM

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Added sound drivers to repository
2014-12-24 20:01:52 -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 0
DMABUFFERLENGTH EQU 1024
MIXRESOLUTION EQU 16 ; 16 bit mixing for the SB Pro
MIXTABLESIZE EQU 2*256*65
SBProMsg DB "Sound Blaster detected", 13
DB "Port ", 0FDh, "Xh, IRQ ", 0FDh, "D, DMA ", 0FDh, "D", 0
SBProNoMemoryMsg DB "Sound Blaster detected", 13
DB "Error: Insufficient memory", 0
ReinitMsg DB "Sound Blaster reinitialised", 0
ConfigErrorMsg DB "Error saving configuration to ITSB.DRV", 0
ConfigOKMsg DB "Configuration saved to ITSB.DRV", 0
BLASTERString DB "BLASTER"
DriverName DB "ITSB.DRV", 0
BlasterEnvironment Label DWord
BlasterOffset DW 0
BlasterSegment DW 0
Forced DB 0
BytesToMix DW 1000
SBMixConst DB 0
MixSegment DW 0
DMASegment DW 0
MixTransferOffset DW 0
MixTransferRemaining DW 0
CONFIGURATIONOFFSET EQU $+128
CONFIGSIZE EQU 4
MixModeOffset DW 0
DMASize DW 512
MixLength DW 0
IMR DW 0
OldIRQHandler DD 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
;**********************************
SBProScreenList Label
DW 6
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 DriverText
DW Near Ptr MixModeHeader
DW Near Ptr MixModeButton1 ; 6
DW Near Ptr MixModeButton2 ; 7
DW 0
MixModeHeader DW 1
DB 3, 14
DB 20h
DB "Mixing Mode, Playback Frequency: ", 0FDh, "DHz", 0
MixSpeed DW 21739
MixModeButton1 DW 2
DW 0FFFFh, 7, 0FFFFh, 0FFFFh
DW 0
DW 0, 0
DW 6
DW Offset GetMixMode
DriverSegment1 DW 0
DW 0
DW Offset SetMixMode
DriverSegment2 DW 0
DB 5, 16, 34, 18, 8
DB 0
DB " 16 Bit, Non-Interpolated", 0
MixModeButton2 DW 2
DW 6, 0FFFFh, 0FFFFh, 0FFFFh
DW 0
DW 0, 0
DW 6
DW Offset GetMixMode
DriverSegment3 DW 0
DW 120
DW Offset SetMixMode
DriverSegment4 DW 0
DB 5, 19, 34, 21, 8
DB 0
DB " 16 Bit, Interpolated", 0
SB16HeaderLine DW 10
DB "Sound Blaster Driver", 0
DriverText DW 1
DB 34, 48
DB 21h
DB "Sound Blaster Driver 1.0 for Impulse Tracker", 0
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
; <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 mono12b.mix
include mono12bi.mix
MixFunctionTables Label
include mono12b.inc ; contains the tables
include mono12bi.inc
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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
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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
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Proc GetMixMode Far
Push CS
Pop ES
Mov DI, Offset MixModeOffset
Ret
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 SetMixMode Far
Mov AX, [SI+22]
ClI
Mov CS:MixModeOffset, AX
Mov DS, Word Ptr [CS:RecalculateAllVolumes+2]
Call CS:RecalculateAllVolumes
StI
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 MixModeOffset
Int 21h
SetMixMode2:
PushF
Mov AH, 3Eh
Int 21h
PopF
JC SetMixMode1
Mov SI, Offset ConfigOKMsg
SetMixMode1:
Mov BX, 40
Call SetInfoLine
Mov AX, 1
Ret
EndP SetMixMode
Assume DS:Nothing
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Proc SBGetRegister
Out DX, AL
Inc DX
In AL, DX
Dec DX
Ret
EndP SBGetRegister
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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, 21739
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
; <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, 290h
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 SI, Offset BLASTERString
Mov CX, 7
Call GetEnvironment ; Returns ES:DI, Carry if error
JC DetectCardDefault
Mov BlasterOffset, DI
Mov BlasterSegment, ES
Cmp IRQ, 0FFFFh
JE DetectCardIRQ3
Cmp Forced, 0
JNE DetectCardIRQDone
Jmp DetectCardError
DetectCardIRQ3:
Push DS
Push SI
LDS SI, BlasterEnvironment
Xor DX, DX ; DX = env..
DetectCardIRQ1:
LodsB
And AL, AL
JZ DetectCardError
Cmp AL, 'i'
JE DetectCardIRQ2
Cmp AL, 'I'
JE DetectCardIRQ2
Jmp DetectCardIRQ1
DetectCardIRQ2:
LodsB
And AL, AL
JZ DetectCardIRQEnd
Cmp AL, ' '
JE DetectCardIRQEnd
Sub AL, '0'
JC DetectCardError
Cmp AL, 9
JA DetectCardError
IMul DX, 10
Add DL, AL
Jmp DetectCardIRQ2
DetectCardIRQEnd:
Pop SI
Pop DS
Mov IRQ, DX
DetectCardIRQDone:
Cmp DMA, 0FFFFh
JE DetectCardDMA3
Cmp Forced, 0
JNE DetectCardDMADone
Jmp DetectCardError
DetectCardDMA3:
Push DS
Push SI
LDS SI, BlasterEnvironment
Xor DX, DX ; DX = env..
DetectCardDMA1:
LodsB
And AL, AL
JZ DetectCardError
Cmp AL, 'd'
JE DetectCardDMA2
Cmp AL, 'D'
JE DetectCardDMA2
Jmp DetectCardDMA1
DetectCardDMA2:
LodsB
And AL, AL
JZ DetectCardDMAEnd
Cmp AL, ' '
JE DetectCardDMAEnd
Sub AL, '0'
JC DetectCardError
Cmp AL, 9
JA DetectCardError
IMul DX, 10
Add DL, AL
Jmp DetectCardDMA2
DetectCardDMAEnd:
Pop SI
Pop DS
Mov DMA, DX
DetectCardDMADone:
Mov EAX, 'Jeff'
ClC
Ret
DetectCardDefault:
Cmp IRQ, 0FFFFh
JNE DetectCardDefaultDMA
Mov IRQ, 7
DetectCardDefaultDMA:
Cmp DMA, 0FFFFh
JNE DetectCardDefaultEnd
Mov DMA, 1
DetectCardDefaultEnd:
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>
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
Mov AX, 2020h
Mov BX, CX ; BX = bytes to mix
Mov DX, CX
; Add CX, CX
Mov MixTransferOffset, DI ; } Memory write
Rep StosW ; } 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
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
Mix0Mode: ; 16-bit mixing, no interpolation, no ramping
Mix0ModeMono:
Mov AL, [SI+20h]
ShR AL, 1
Mov [SI+0Ch], AX
Mov [SI+0Eh], AX
Mov AX, 0
JZ MixModeCommon
Mov AX, 30 ; Use left only-mixing for mono
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, 60
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, MixTransferRemaining
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 SBProIRQHandler
PushAD
Push DS
Push ES
CLD
Mov AX, CS
Mov DS, AX
Assume DS:Driver
Mov DX, BasePort
Add DL, 0Eh
In AL, DX ; 8-bit IRQ ack.
Add DL, 0Ch-0Eh
Mov AL, 14h ; Start output
Call SBOut
Mov AX, DMASize
Dec AX
Call SBOut
Mov AL, AH
Call SBOut
Mov AL, 20h
Cmp IRQ, 7
JBE SBProIRQHandler1
Out 0A0h, AL
SBProIRQHandler1:
Out 20h, AL
Mov AX, MixBufferPos
Mov BX, AX
Mul DMASize
Cmp AX, DMABUFFERLENGTH
JB SBProIRQHandler2
Xor AX, AX
Xor BX, BX
SBProIRQHandler2:
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
Call SaveEMSPageFrame
Cmp MixTransferRemaining, 0
JNE SBProIRQHandler4
Assume DS:Nothing
SBProIRQHandler3:
Push BX
Push ES
Push DI
Call Update
Call MixSamples
Pop DI
Pop ES
Pop BX
SBProIRQHandler4:
Mov DS, MixSegment
Mov SI, MixTransferOffset
Mov DX, BX ; DX = samples to transfer
Cmp DX, MixTransferRemaining
JBE SBProIRQHandler5
Mov DX, MixTransferRemaining
SBProIRQHandler5:
Push DX
SBProIRQHandler6:
Mov AX, [SI]
SAR AX, 6
Test AH, AH
JNZ SBProIRQHandlerClip1
SBProIRQHandler7:
StosB ; } Memory write
Add SI, 2
Dec DX
JNZ SBProIRQHandler6
Pop DX
Sub MixTransferRemaining, DX ; } Memory write
Sub BX, DX
JNZ SBProIRQHandler3
Mov MixTransferOffset, SI ; } Memory write
Call RestoreEMSPageFrame
Pop ES
Pop DS
PopAD
IRet
SBProIRQHandlerClip1:
Mov AL, 00h
JS SBProIRQHandler7
Mov AL, 0FFh
Jmp SBProIRQHandler7
EndP SBProIRQHandler
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 SBProIRQHandler
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 StartSBPro ;
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, 40h ; time constant
Call SBOut
Mov AL, SBMixConst
Call SBOut
Mov AL, 0D1h ; turn on speaker
Call SBOut
Mov AL, 14h ; Start output
Call SBOut
Mov AX, DMASize
Dec AX
Call SBOut
Mov AL, AH
Call SBOut
Pop ES
PopA
Ret
Assume DS:Nothing
EndP StartSBPro
;<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
;<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>
;<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 AX, DS
Mov DriverSegment1, AX
Mov DriverSegment2, AX
Mov DriverSegment3, AX
Mov DriverSegment4, AX
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
Call GetSBMixConst
; Parags to allocate = (2/(.4*31*16))*MixSpeed + 2080
; = 661*MixSpeed/65536
Mov AX, 661
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 SBProNoMemoryMsg
Ret
InitSound1:
Mov MixSegment, AX
Add AX, DX
Mov DMASegment, AX
Call SetIRQ
Call GetTempo
Call SetTempo
Call StartSBPro
Mov SI, Offset SBProMsg
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, 40
Call SetInfoLine
Mov AX, CS:BasePort
Call ResetDSP
Call StartSBPro
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 ResetDSP
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
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 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
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 SBProScreenList
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