st7/
;------------------------------------------------------
; SEGMENT MAPPING FILE AUTOMATICALLY GENERATED BY STVD7
; SHOULD NOT BE MANUALLY MODIFIED.
; CHANGES WILL BE LOST WHEN FILE IS REGENERATED.
;------------------------------------------------------
TITLE "KF85.ASM"
MOTOROLA
#INCLUDE "st7flite05.inc"
BYTES ; The following addresses are 8 bits long
segment byte at 80-FF 'ram0'
MMSH DS.B $1
MMSL DS.B $1
WORDS ; The following addresses are 16 bits long
segment byte at FA00-FFDF 'rom'
MAIN:
LD A,#$0F
LD PADDR,A
LD PAOR,A
NOP
NOP
NOP
NOP
NOP
NOP
NOP
BSET PADR,#3
LD A,#20 ;延时子程序
L1:
DEC A
JRNE L1
BRES PADR,#3
JP MAIN
PA3外接一个LED，但是怎么也看不到闪烁的现象。我怎么调试都无法实现，LED老是常亮。我感觉到问题存在与我对I/O口的输出模式，即是所谓的开漏和推拉理解有误。请各位技术工程师帮我解答，谢谢！ |
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