preface.asm

摩托罗拉Mc6811利程

; Preface 6811 assembly language programs
; Jonathan W. Valvano
; This software accompanies the book,
; Embedded Microcomputer Systems: Real Time Interfacing
; published by Brooks Cole, 1999
;
; MC68HC11A8
PORTA equ  $1000
      org  $E000   Programs in ROM
Start ldaa PORTA   input Port A
      staa 0       save in RAM
      bra  Start
      org  $FFFE
      fdb  Start   beginning address