🚀 go-pugleaf

Hi,

I've got a problem switching the expanded memory manager EMM386.EXE, using
the functions documentated in Ralf Brown's interrupt list. Although switching
to modes OFF and AUTO works fine, I COULDN'T SWITCH IT ON !!!!!

Here's the excerpt from the list:

>        INT 67 - Microsoft EMM386.EXE v4.20+ - INSTALLATION CHECK
>                AX = FFA5h
>        Return: AX = 845Ah if loaded
>                    BX:CX -> API entry point
>
>        Call API entry point with:
>                AH = 00h get memory manager's status
>                    Return: AH = status
>                                bit 0: not active (OFF)
>                                bit 1: in "Auto" mode
>                AH = 01h set memory manager's state
>                    AL = new state (00h ON, 01h OFF, 02h AUTO)
>

This is the assembler program I use:

         QUEST     dw 0ffa5h
         INSTALLED dw 0845ah
         API_POINT dd ?

MAIN:    mov  ax,QUEST                  ; test installation
         int  67h
         cmp  ax,INSTALLED              ; equal if installed
         jne  EXIT

         mov  word ptr API_POINT,cx     ; entry point in BX:CX
         mov  word ptr API_POINT[2],bx

ENABLE:  mov  ah,01h                    ; set state
         mov  al,00h                    ; ON - does not work !
         mov  si,offset API_POINT
         call dword ptr cs:[si]


As this thing is of great importance for me, it would be nice if somebody
could help me here. Thanx!


                                       Daniel Hopp