stack.asm

来自「介绍用Java解析网络数据的三种特殊方法」· 汇编 代码 · 共 71 行

; This sample shows how the
; stack works. Click "Stack"
; button in emulator to see
; the contents of the stack.

#MAKE_COM#

; This code does nothing
; useful, except printing
; "Hi" in the end.

; COM file is loaded at 100h
; prefix:
ORG     100h

MOV     AX, 1234h
PUSH    AX

MOV     DX, 5678h
PUSH    DX

POP     BX
POP     CX

; function call pushes
; IP value of the next
; instruction:

CALL    tfunc

MOV     AX, 7890h
PUSH    AX
POP     BX

; A typical use of
; stack is to set segment
; registers.
; set DS to video
; memory segment:

MOV     AX, 0B800h
PUSH    AX
POP     DS

; print "Hi":
MOV     [170h], 'H'
MOV     [172h], 'i'

; color attribute for 'H'
MOV     [171h], 11001110b

; color attribute for 'i'
MOV     [173h], 10011110b

RET

; the test procedure:

tfunc   PROC    NEAR

        XOR     BX, BX
        XOR     CX, CX

; here we "pop" the IP
; value:

        RET
tfunc   ENDP

END