#include "mpk3d.h"
/* Universelle VxD-Aufrufroutinen */
byte VxDsupC(byte AFunc, byte AUnit, long lParam1, long lParam2){
asm{
mov al,[AUnit]
mov ah,[AFunc]
db 0x66; mov dx,word ptr [lParam1]
db 0x66; mov cx,word ptr [lParam2]
db 0x66; cmp word ptr [EntryPoint],0
jz @@1
call [EntryPoint]
@@1:
}
return _AL;
}
byte VxDsupV(byte AFunc, byte AUnit, long *lParam1, long *lParam2){
asm{
mov al,[AUnit]
mov ah,[AFunc]
les bx,[lParam1]
db 0x66; mov dx,es:[bx]
les bx,[lParam2]
db 0x66; mov cx,es:[bx]
db 0x66; cmp word ptr [EntryPoint],0
jz @@1
call [EntryPoint]
@@1:
les bx,[lParam1]
db 0x66; mov es:[bx],dx
les bx,[lParam2]
db 0x66; mov es:[bx],cx
}
return _AL;
}
/* Initialisierung: Pointer ermitteln */
void VxDInit(void){
asm{
mov bx,MPK3D_Device_ID
xor di,di
mov es,di /* also mit Null laden */
mov ax,0x1684
int 0x2f
mov word ptr [EntryPoint],di
mov word ptr [EntryPoint+2],es /* Einsprungadresse zum VxD */
}
}
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