;--------------------------------------------------------------------------
;--------------------------------------------------------------------------
;--------------------------------------------------------------------------
;--------------------------------------------------------------------------
;
; DOS32 V2.4 routines for using V2.4 code with DOS32 v3.0.
;
;
;--------------------------------------------------------------------------
;--------------------------------------------------------------------------
;--------------------------------------------------------------------------
.386
.model flat, pascal
.stack 8000h
.code
IFDEF masm ; Allow MASM assembly
global EQU externdef
ENDIF
INCLUDE V24.INC ; Define all publics and externs
GetIRQVector PROC Uses EAX EBX
and bl,0fh
cmp bl,8
jb J2
add bl,60h
J2: add bl,8h
mov ax,204h
int 31h
ret
GetIRQVector ENDP
SetIRQVector PROC Uses EAX EBX
and bl,0fh
cmp bl,8
jb J1
add bl,60h
J1: add bl,8h
mov ax,205h
int 31h
ret
SetIRQVector ENDP
GetIntVector PROC Uses EAX
mov ax,204h
int 31h
ret
GetIntVector ENDP
SetIntVector PROC Uses EAX
mov ax,205h
int 31h
ret
SetIntVector ENDP
AllocDMAregion PROC Uses EAX
mov ax,0EE41h
int 31h
ret
AllocDMAregion ENDP
Allocate_Memory PROC
mov ax,0EE42h
int 31h
ret
Allocate_Memory ENDP
align 4
CODE32_sel DW ? ; Selector
DATA32_sel DW ? ; Selector
Zero_sel DW ? ; Selector
PIC1_Base DB 8 ; IRQ 0..7
PIC2_Base DB 70h ; IRQ 0..7
Environment_segment DW ? ; real mode segment
Environment_addr DD ? ; 32bit offset
PSP_segment DW ? ; real mode segment
PSP_addr DD ? ; 32bit offset
_0b8000h DD 0b8000h ; 32bit offset
_0a0000h DD 0a0000h ; 32bit offset
CODE32_addr DD ? ; 32bit offset
Zero_Addr DD ? ; 32bit offset
_the_start:
mov ax,0EE00h
int 31h
mov Zero_sel,bx
mov CODE32_sel,cs
mov DATA32_sel,ds
mov ax,0EE02h
int 31h
mov CODE32_addr,ebx
neg ebx
mov Zero_Addr,ebx
add _0a0000h,ebx
add _0b8000h,ebx
mov PSP_addr, esi
sub esi,ebx
shr esi,4
mov PSP_segment,si
mov Environment_addr, edi
sub edi,ebx
shr edi,4
mov Environment_segment,di
jmp Start32
END _the_start
