simple_io.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 49 行

; This sample shows how to access
; virtual ports (00000Fh to 0FFFFh).
; These ports are emulated in
; "EmuPort.io" file (saved in
; Windows "Temp" folder).
;
; This new technology allows 
; to make external add-on devices
; for Emu8086, such as led displays,
; thermostat, stepper-motor, etc...

; "DEVICES" folder contains sample
; device that works with this sample.
; (with Visual Basic source code).

; Start "Simple.exe" before running
; this sample (from "Virtual
; Devices" menu of the emulator).

#make_COM#

ORG 100h


; Write byte value "215"
; into the port 115:
mov al, 215
out 115, al

; Write word value "1234"
; into the port 117:
mov ax, 1234
out 117, ax

; Reset:
mov ax, 0

; Read byte from
; port 110 into AL:
in al, 110

; Read word from
; port 112 into AX:
in ax, 112


ret