PUSH    param1
        PUSH    param2
        PUSH    param3
        PUSH    param4

    ; note that each parameter is 2 bytes

mySub:

        PUSH    AX
        PUSH    BX
        PUSH    CX

    ; do useful work HERE

        POP     CX
        POP     BX
        POP     AX

        RET     8       ; blow the value params off the stack

push param1  ; NOTE: in Method 2 I assume these to be 2 byte values.push param2call mySub; Method 1mySub:    pop ax  ; Pop return address.    pop bx  ; Pop param2    pop dx  ; Pop param1    push ax ; Push return address back on stack    ; Do useful work here.    ret; Method 2mySub:    ; Setup stack frame.    push bp     ; Save for later use.    mov bp, si  ; Used to access parameters and local vars.    add si, x   ; where x is the amount of bytes to reserve for locals variables (if any).    ; Save registers.    push ax    push bx    push cx    push dx    mov ax, [bp+4] ; copy param1 to the ax register.    mov bx, [bp+2] ; copy param2 to the bx register.    ; Do whatever work.    ; Restore registers.    pop dx    pop cx    pop bx    pop ax    ; Clean up stack frame.    mov si, bp ; clear local variables from stack.    add si, 4  ; clear 4 bytes (the params) from stack.    pop bp    ret

Quote:Original post by Washu

  enter x,0