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818 lines
20 KiB
818 lines
20 KiB
page ,132
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;-----------------------------Module-Header-----------------------------;
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; Module Name: thunks.asm - Passes control to 32 bit code.
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;
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;
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; Created: 27-09-93
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; Author: Stephen Estrop [StephenE]
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;
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; Copyright (c) 1993 Microsoft Corporation
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;
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;-----------------------------------------------------------------------;
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?PLM = 1
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?WIN = 0
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PMODE = 1
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.xlist
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include cmacros.inc
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include windows.inc
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.list
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;-----------------------------------------------------------------------;
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;
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;-----------------------------------------------------------------------;
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externFP MMCALLPROC32 ; in Stack.asm
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externFP wod32Message
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externFP wid32Message
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externFP mod32Message
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externFP mid32Message
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externFP joy32Message ; in joy.c
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externFP aux32Message ; in init.c
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externFP mci32Message ; in mci.c
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externFP cb32 ; in init.c
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externFP CheckThunkInit ; in stack.asm
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externFP wodMapper ; in init.c
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externFP widMapper ; in init.c
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WAVE_MAPPER equ (-1) ;
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;
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; The following structure should be used to access high and low
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; words of a DWORD. This means that "word ptr foo[2]" -> "foo.hi".
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;
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LONG struc
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lo dw ?
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hi dw ?
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LONG ends
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FARPOINTER struc
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off dw ?
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sel dw ?
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FARPOINTER ends
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createSeg WAVE, WaveSeg, word, public, CODE
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sBegin WaveSeg
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assumes cs,WaveSeg
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assumes ds,nothing
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assumes es,nothing
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;-----------------------------------------------------------------------;
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; @doc INTERNAL WAVE
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;
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; @func DWORD | waveOMessage | This function sends messages to the waveform
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; output device drivers.
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;
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; @parm HWAVE | hWave | The handle to the audio device.
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;
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; @parm UINT | wMsg | The message to send.
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;
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; @parm DWORD | dwP1 | Parameter 1.
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;
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; @parm DWORD | dwP2 | Parameter 2.
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;
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; @rdesc Returns the value returned from the thunk.
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;-----------------------------------------------------------------------;
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cProc waveOMessage, <NEAR, PUBLIC, PASCAL>, <>
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ParmW hWave
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ParmW wMsg
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ParmD dw1
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ParmD dw2
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cBegin
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call CheckThunkInit ; returns ax=0 if sucessful
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or ax,ax
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jnz waveOMessage_exit
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mov bx,hWave ; bx = hWave
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mov ax,WORD PTR [bx+8] ; ax = bx->wDeviceID
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cmp ax,WAVE_MAPPER ; Is this the wave mapper
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jnz @f ; No so thunk to the 32 bit code.
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cmp [wodMapper].hi,0 ; No wave mapper loaded
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jz @f ; so jump to 32 bit code
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push ax ; push device id
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push wMsg ; push message
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push WORD PTR [bx+6] ; push bx->dwDrvUser.hi
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push WORD PTR [bx+4] ; push bx->dwDrvUser.lo
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push dw1.hi
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push dw1.lo
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push dw2.hi
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push dw2.lo
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call DWORD PTR [wodMapper]
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jmp waveOMessage_exit
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@@:
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sub dx,dx ; dx = 0
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push dx
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push ax
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push dx
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push wMsg
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push WORD PTR [bx+6] ; push bx->dwDrvUser.hi
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push WORD PTR [bx+4] ; push bx->dwDrvUser.lo
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push dw1.hi
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push dw1.lo
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push dw2.hi
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push dw2.lo
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push wod32Message.sel
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push wod32Message.off
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push dx
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push dx ; no directory change
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call FAR PTR MMCALLPROC32 ; call the 32 bit code
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waveOMessage_exit:
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cEnd
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;-----------------------------------------------------------------------;
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; @doc INTERNAL WAVE
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;
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; @func UINT | waveOIDMessage | This function opens a 32 bit wave device
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; on behalf of a 16 bit application.
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;
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; @parm UINT | wDeviceID | Device ID to send message to.
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;
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; @parm UINT | wMessage | The message to send.
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;
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; @parm DWORD | dwUser | The users private DWORD.
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;
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; @parm DWORD | dwParam1 | Parameter 1.
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;
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; @parm DWORD | dwParam2 | Parameter 2.
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;
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; @rdesc The return value is the low word of the returned message.
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;-----------------------------------------------------------------------;
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cProc waveOIDMessage, <FAR, PUBLIC, PASCAL>, <>
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ParmW wDeviceID
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ParmW wMsg
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ParmD dwUser
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ParmD dw1
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ParmD dw2
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cBegin
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call CheckThunkInit
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or ax,ax
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jnz waveOIDMessage_exit
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mov ax,wDeviceID
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cmp ax,WAVE_MAPPER ; Is this the wave mapper
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jnz @f ; No so thunk to the 32 bit code.
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cmp [wodMapper].hi,0 ; No wave mapper loaded
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jz @f ; so jump to 32 bit code
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push ax ; push device id
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push wMsg ; push message
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push dwUser.hi
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push dwUser.lo
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push dw1.hi
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push dw1.lo
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push dw2.hi
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push dw2.lo
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call DWORD PTR [wodMapper]
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jmp waveOIDMessage_exit
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@@:
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sub dx,dx
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push dx
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push ax
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push dx
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push wMsg
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push dwUser.hi
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push dwUser.lo
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push dw1.hi
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push dw1.lo
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push dw2.hi
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push dw2.lo
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push wod32Message.sel
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push wod32Message.off
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push dx
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push dx ; no directory change
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call FAR PTR MMCALLPROC32 ; call the 32 bit code
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waveOIDMessage_exit:
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cEnd
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;-----------------------------------------------------------------------;
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; @doc INTERNAL WAVE
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;
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; @func DWORD | waveIMessage | This function sends messages to the waveform
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; output device drivers.
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;
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; @parm HWAVE | hWave | The handle to the audio device.
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;
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; @parm UINT | wMsg | The message to send.
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;
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; @parm DWORD | dwP1 | Parameter 1.
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;
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; @parm DWORD | dwP2 | Parameter 2.
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;
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; @rdesc Returns the value returned from the thunk.
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;-----------------------------------------------------------------------;
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cProc waveIMessage, <NEAR, PUBLIC, PASCAL>, <>
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ParmW hWave
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ParmW wMsg
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ParmD dw1
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ParmD dw2
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cBegin
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call CheckThunkInit
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or ax,ax
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jnz waveIMessage_exit
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mov bx,hWave ; bx = hWave
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mov ax,WORD PTR [bx+8] ; ax = bx->wDeviceID
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cmp ax,WAVE_MAPPER ; Is this the wave mapper
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jnz @f ; No so thunk to the 32 bit code.
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cmp [widMapper].hi,0 ; No wave mapper loaded
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jz @f ; so jump to 32 bit code
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push ax ; push device id
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push wMsg ; push message
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push WORD PTR [bx+6] ; push bx->dwDrvUser.hi
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push WORD PTR [bx+4] ; push bx->dwDrvUser.lo
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push dw1.hi
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push dw1.lo
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push dw2.hi
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push dw2.lo
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call DWORD PTR [widMapper]
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jmp waveIMessage_exit
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@@:
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sub dx,dx ; dx = 0
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push dx
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push ax
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push dx
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push wMsg
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push WORD PTR [bx+6] ; push bx->dwDrvUser.hi
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push WORD PTR [bx+4] ; push bx->dwDrvUser.lo
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push dw1.hi
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push dw1.lo
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push dw2.hi
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push dw2.lo
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push wid32Message.sel
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push wid32Message.off
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push dx
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push dx ; no directory change
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call FAR PTR MMCALLPROC32 ; call the 32 bit code
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waveIMessage_exit:
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cEnd
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;-----------------------------------------------------------------------;
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; @doc INTERNAL WAVE
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;
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; @func UINT | waveIIDMessage | This function opens a 32 bit wave device
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; on behalf of a 16 bit application.
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;
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; @parm UINT | wDeviceID | Device ID to send message to.
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;
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; @parm UINT | wMessage | The message to send.
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;
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; @parm DWORD | dwUser | The users private DWORD.
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;
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; @parm DWORD | dwParam1 | Parameter 1.
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;
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; @parm DWORD | dwParam2 | Parameter 2.
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;
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; @rdesc The return value is the low word of the returned message.
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;-----------------------------------------------------------------------;
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cProc waveIIDMessage, <FAR, PUBLIC, PASCAL>, <>
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ParmW wDeviceID
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ParmW wMsg
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ParmD dwUser
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ParmD dw1
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ParmD dw2
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cBegin
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call CheckThunkInit
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or ax,ax
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jnz waveIIDMessage_exit
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mov ax,wDeviceID
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cmp ax,WAVE_MAPPER ; Is this the wave mapper
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jnz @f ; No so thunk to the 32 bit code.
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cmp [widMapper].hi,0 ; No wave mapper loaded
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jz @f ; so jump to 32 bit code
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push ax ; push device id
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push wMsg ; push message
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push dwUser.hi
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push dwUser.lo
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push dw1.hi
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push dw1.lo
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push dw2.hi
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push dw2.lo
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call DWORD PTR [widMapper]
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jmp waveIIDMessage_exit
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@@:
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sub dx,dx
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push dx
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push ax
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push dx
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push wMsg
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push dwUser.hi
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push dwUser.lo
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push dw1.hi
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push dw1.lo
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push dw2.hi
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push dw2.lo
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push wid32Message.sel
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push wid32Message.off
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push dx
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push dx ; no directory change
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call FAR PTR MMCALLPROC32 ; call the 32 bit code
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waveIIDMessage_exit:
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cEnd
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sEnd
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createSeg FIX, CodeFix, word, public, CODE
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sBegin CodeFix
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assumes cs,CodeFix
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assumes ds,nothing
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assumes es,nothing
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;-----------------------------------------------------------------------;
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; @doc INTERNAL MIDI
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;
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; @func DWORD | midiOMessage | This function sends messages to the midiform
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; output device drivers.
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;
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; @parm HMIDI | hMidi | The handle to the audio device.
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;
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; @parm UINT | wMsg | The message to send.
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;
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; @parm DWORD | dwP1 | Parameter 1.
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;
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; @parm DWORD | dwP2 | Parameter 2.
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;
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; @rdesc Returns the value returned from the thunk.
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;-----------------------------------------------------------------------;
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cProc midiOMessage, <FAR, PUBLIC, PASCAL>, <>
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ParmW hMidi
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ParmW wMsg
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ParmD dw1
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ParmD dw2
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cBegin
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call CheckThunkInit
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or ax,ax
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jnz @F
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mov bx,hMidi ; bx = hMidi
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mov ax,WORD PTR [bx+8] ; ax = bx->wDeviceID
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sub dx,dx ; dx = 0
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push dx
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push ax
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push dx
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push wMsg
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push WORD PTR [bx+6] ; push bx->dwDrvUser.hi
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push WORD PTR [bx+4] ; push bx->dwDrvUser.lo
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push dw1.hi
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push dw1.lo
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push dw2.hi
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push dw2.lo
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push mod32Message.sel
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push mod32Message.off
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push dx
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push dx ; no directory change
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call FAR PTR MMCALLPROC32 ; call the 32 bit code
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@@:
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cEnd
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;-----------------------------------------------------------------------;
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; @doc INTERNAL MIDI
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;
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; @func DWORD | midiIMessage | This function sends messages to the midiform
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; output device drivers.
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;
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; @parm HMIDI | hMidi | The handle to the audio device.
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;
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; @parm UINT | wMsg | The message to send.
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;
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; @parm DWORD | dwP1 | Parameter 1.
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;
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; @parm DWORD | dwP2 | Parameter 2.
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;
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; @rdesc Returns the value returned from the thunk.
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;-----------------------------------------------------------------------;
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cProc midiIMessage, <FAR, PUBLIC, PASCAL>, <>
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ParmW hMidi
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ParmW wMsg
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ParmD dw1
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ParmD dw2
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cBegin
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call CheckThunkInit
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or ax,ax
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jnz @F
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mov bx,hMidi ; bx = hMidi
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mov ax,WORD PTR [bx+8] ; ax = bx->wDeviceID
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sub dx,dx ; dx = 0
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push dx
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push ax
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push dx
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push wMsg
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push WORD PTR [bx+6] ; push bx->dwDrvUser.hi
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push WORD PTR [bx+4] ; push bx->dwDrvUser.lo
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push dw1.hi
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push dw1.lo
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push dw2.hi
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push dw2.lo
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push mid32Message.sel
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push mid32Message.off
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push dx
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push dx ; no directory change
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call FAR PTR MMCALLPROC32 ; call the 32 bit code
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@@:
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cEnd
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sEnd
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createSeg MIDI, MidiSeg, word, public, CODE
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sBegin MidiSeg
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assumes cs,MidiSeg
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assumes ds,nothing
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assumes es,nothing
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;-----------------------------------------------------------------------;
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; @doc INTERNAL MIDI
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;
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; @func UINT | midiOIDMessage | This function opens a 32 bit midi device
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; on behalf of a 16 bit application.
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;
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; @parm UINT | wDeviceID | Device ID to send message to.
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;
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; @parm UINT | wMessage | The message to send.
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;
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; @parm DWORD | dwUser | The users private DWORD.
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;
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; @parm DWORD | dwParam1 | Parameter 1.
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;
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; @parm DWORD | dwParam2 | Parameter 2.
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;
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; @rdesc The return value is the low word of the returned message.
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;-----------------------------------------------------------------------;
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cProc midiOIDMessage, <FAR, PUBLIC, PASCAL>, <>
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ParmW wDeviceID
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ParmW wMsg
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ParmD dwUser
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ParmD dw1
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ParmD dw2
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cBegin
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call CheckThunkInit
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sub dx,dx
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push dx
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push wDeviceID
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push dx
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push wMsg
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push dwUser.hi
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push dwUser.lo
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push dw1.hi
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push dw1.lo
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push dw2.hi
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push dw2.lo
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push mod32Message.sel
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push mod32Message.off
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push dx
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push dx ; no directory change
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call FAR PTR MMCALLPROC32 ; call the 32 bit code
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cEnd
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;-----------------------------------------------------------------------;
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; @doc INTERNAL MIDI
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;
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; @func UINT | midiIIDMessage | This function opens a 32 bit midi device
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; on behalf of a 16 bit application.
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;
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; @parm UINT | wDeviceID | Device ID to send message to.
|
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;
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; @parm UINT | wMessage | The message to send.
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;
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; @parm DWORD | dwUser | The users private DWORD.
|
|
;
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; @parm DWORD | dwParam1 | Parameter 1.
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;
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; @parm DWORD | dwParam2 | Parameter 2.
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;
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; @rdesc The return value is the low word of the returned message.
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;-----------------------------------------------------------------------;
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cProc midiIIDMessage, <FAR, PUBLIC, PASCAL>, <>
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ParmW wDeviceID
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ParmW wMsg
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ParmD dwUser
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ParmD dw1
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ParmD dw2
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cBegin
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call CheckThunkInit
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or ax,ax
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jnz @F
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sub dx,dx
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push dx
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push wDeviceID
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push dx
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push wMsg
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push dwUser.hi
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push dwUser.lo
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push dw1.hi
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push dw1.lo
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push dw2.hi
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push dw2.lo
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push mid32Message.sel
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push mid32Message.off
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push dx
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push dx ; no directory change
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call FAR PTR MMCALLPROC32 ; call the 32 bit code
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@@:
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cEnd
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sEnd
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createSeg MCI, MciSeg, word, public, CODE
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sBegin MciSeg
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assumes cs,MciSeg
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assumes ds,nothing
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assumes es,nothing
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;-----------------------------------------------------------------------;
|
|
; mciMessage
|
|
;
|
|
;
|
|
;-----------------------------------------------------------------------;
|
|
cProc mciMessage, <FAR, PUBLIC, PASCAL>, <>
|
|
ParmW wMsg
|
|
ParmD dw1
|
|
ParmD dw2
|
|
ParmD dw3
|
|
ParmD dw4
|
|
cBegin
|
|
call CheckThunkInit
|
|
or ax,ax
|
|
jnz @F
|
|
|
|
sub dx,dx
|
|
push dx
|
|
push wMsg
|
|
|
|
push dw1.hi
|
|
push dw1.lo
|
|
|
|
push dw2.hi
|
|
push dw2.lo
|
|
|
|
push dw3.hi
|
|
push dw3.lo
|
|
|
|
push dw4.hi
|
|
push dw4.lo
|
|
|
|
push mci32Message.sel
|
|
push mci32Message.off
|
|
|
|
push dx
|
|
push 1 ; set directory change
|
|
|
|
call FAR PTR MMCALLPROC32 ; call the 32 bit code
|
|
@@:
|
|
cEnd
|
|
sEnd
|
|
|
|
|
|
createSeg RARE, RareSeg, word, public, CODE
|
|
|
|
sBegin RareSeg
|
|
assumes cs,RareSeg
|
|
assumes ds,nothing
|
|
assumes es,nothing
|
|
|
|
;-----------------------------------------------------------------------;
|
|
; @doc INTERNAL AUX
|
|
;
|
|
; @func UINT | auxOutMessage | This function opens a 32 bit midi device
|
|
; on behalf of a 16 bit application.
|
|
;
|
|
; @parm FARPROC | lpProc | The 32 bit function that will get called.
|
|
;
|
|
; @parm UINT | wDeviceID | Device ID to send message to.
|
|
;
|
|
; @parm UINT | wMessage | The message to send.
|
|
;
|
|
; @parm DWORD | dwParam1 | Parameter 1.
|
|
;
|
|
; @parm DWORD | dwParam2 | Parameter 2.
|
|
;
|
|
; @rdesc The return value is the low word of the returned message.
|
|
;-----------------------------------------------------------------------;
|
|
cProc auxOutMessage, <FAR, PUBLIC, PASCAL, LOADDS>, <>
|
|
ParmW wDeviceID
|
|
ParmW wMsg
|
|
ParmD dw1
|
|
ParmD dw2
|
|
cBegin
|
|
call CheckThunkInit
|
|
or ax,ax
|
|
jnz @F
|
|
|
|
sub dx,dx
|
|
push dx
|
|
push wDeviceID
|
|
|
|
push dx
|
|
push wMsg
|
|
|
|
push dx
|
|
push dx
|
|
|
|
push dw1.hi
|
|
push dw1.lo
|
|
|
|
push dw2.hi
|
|
push dw2.lo
|
|
|
|
push aux32Message.sel
|
|
push aux32Message.off
|
|
|
|
push dx
|
|
push dx ; no directory change
|
|
|
|
call FAR PTR MMCALLPROC32 ; call the 32 bit code
|
|
@@:
|
|
cEnd
|
|
|
|
;*****************************Private*Routine******************************\
|
|
; joyMessage
|
|
;
|
|
;
|
|
;
|
|
; History:
|
|
; 27-09-93 - StephenE - Created
|
|
;
|
|
;**************************************************************************/
|
|
cProc joyMessage, <FAR, PUBLIC, PASCAL>, <>
|
|
ParmW hdrv,
|
|
ParmW wMsg,
|
|
ParmD dw1,
|
|
ParmD dw2
|
|
cBegin
|
|
call CheckThunkInit
|
|
or ax,ax
|
|
jnz @F
|
|
|
|
sub dx,dx
|
|
push dx
|
|
mov ax,hdrv
|
|
|
|
dec ax ; uDevID
|
|
push ax ;
|
|
|
|
push dx ; uMsg
|
|
push wMsg ;
|
|
|
|
push dx ; dummy dwInstance
|
|
push dx ;
|
|
|
|
push dw1.hi ; dwParam1
|
|
push dw1.lo ;
|
|
|
|
push dw2.hi ; dwParam2
|
|
push dw2.lo ;
|
|
|
|
push joy32Message.sel ; Address of function to be called
|
|
push joy32Message.off ;
|
|
|
|
push dx
|
|
push dx ; no directory change
|
|
|
|
call FAR PTR MMCALLPROC32 ; call the 32 bit code
|
|
@@:
|
|
cEnd
|
|
|
|
;******************************Public*Routine******************************\
|
|
; Notify_Callback_Data
|
|
;
|
|
;
|
|
;
|
|
; History:
|
|
; 27-09-93 - StephenE - Created
|
|
;
|
|
;**************************************************************************/
|
|
cProc Notify_Callback_Data, <FAR, PUBLIC, PASCAL>, <>
|
|
ParmD CallbackData
|
|
cBegin
|
|
sub dx,dx
|
|
|
|
push dx ; Dummy uDevId
|
|
push dx ;
|
|
|
|
push dx ; Dummy uMsg
|
|
push dx ;
|
|
|
|
push dx ; Dummy dwInstance
|
|
push dx ;
|
|
|
|
push dx ; Dummy dwParam1
|
|
push dx ;
|
|
|
|
push CallbackData.hi ; Real dwParam2
|
|
push CallbackData.lo ;
|
|
|
|
push cb32.sel ; Address of function to be called
|
|
push cb32.off ;
|
|
|
|
push dx
|
|
push dx ; no directory change
|
|
|
|
call FAR PTR MMCALLPROC32 ; call the 32 bit code
|
|
cEnd
|
|
|
|
sEnd
|
|
|
|
end
|