; Results:
        ; 0 - 8088
        ; 1 - 8086
        ; 2 - V20
        ; 3 - V30
        ; 4 - 80188
        ; 5 - 80186
        ; 6 - 80286
        ; 7 - 80386+
        
        
        push bp
        mov bp, sp
        
        ; push zero onto the stack and pop it into flags.
        ; some bits won't change
        xor ax,ax
        push ax
        popf
        pushf
        pop ax
        
        and ax, 0xf000 ;0f000h
        cmp ax, 0xf000 ;0f000h
        je lessthantwoeightsix
        
        ; marked as 286 (6)
        mov dl, 6
        
        mov ax, 0x7000 ;7000h
        push ax
        popf
        
        pushf
        pop ax
        and ax, 0x7000 ;7000h
        jz alldone
        
        ; mark as 386 (7)
        inc dl
        
        jmp alldone
        
lessthantwoeightsix:
        
        ; Mark as 80188 (4)
        mov dl, 4
        
        mov al, 0xff ;0ffh
        mov cl, 0x21 ;21h
        shr al, cl
        
        ; if the shift leaves zero, it's a 8088 class cpu, else 80186/88
        jnz buswidth
        
        ; Lets see if we have a V20/V30 (2)
        mov dl, 2

        sti
        push si
        
        mov si, 0
        mov cx, 0xffff ;0ffffh
        
        ;rep lods [BYTE PTR es:si]
        ; INLINE assembler doesn't understand above - must be replaced after...
        ; because we need a lods with ES as a parameter
        ; so drop a 3-byte nonsense call to be replaced
        mov cx, 0x0f99 ; replace with 0xF3, 0x26, 0xAC
        
        pop si
        
        or cx, cx
        jz buswidth
        
        ; mark as a 8088/8086 (1)
        mov dl, 0
        
buswidth:
        
        ; we are destroying es now, must be restored later
        push cs
        pop es
        std
        
        ; The 99 _must_ be replaced with the true offset of qqend
        mov di, 99 ; OFFSET qqend ;99
        
        ;set up al and cx: 0xfb is the 'sti' instruction
        mov al, 0xfb
        mov cx, 3
        
        ; disable interrupts
        cli
        rep stosb
        
        cld
        nop
        nop
        nop
        inc dx
        nop
qqend:
        sti
        
        ; ES must be restored
        push ds
        pop es
        
alldone:
        ; store in ax
        xor dh, dh

        mov di, [bp]+6
        mov [di], dx
        pop bp
        retf 2