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- Include multi.inc
- Include model.inc
-
- ;==============================================================================
- ;
- ; CAS function 05h -- Find First Entry in Queue
- ;
- ; Format:
- ; int CASFindFirst (int status, BYTE direction, BYTE queue)
- ; Input:
- ; Status of event, direction to search, queue to search
- ; Output:
- ; Returns event handle or negative error code
- ;==============================================================================
-
- .CODE
- CASFindFirst PROC arg1:WORD, arg2:BYTE, arg3:BYTE
-
- push bx ; save registers
- push cx
- push dx
-
- mov ax,MUX ; load multiplex number
- mov ah,al ; move into ah
- mov al,05h ; CAS function 5
- mov cx,arg1 ; event status
- mov dh,arg2 ; direction to search
- mov dl,arg3 ; queue to search
- int 2Fh
-
- cmp ax,0 ; ax = 0?
- jne FINISH ; find first failed, return err. code
- mov ax,bx ; move event handle to ax
- FINISH:
- pop dx ; restore registers
- pop cx
- pop bx
- ret
- CASFindFirst endp
-
- END
-
-
-