Holtek HT-IDE, Руководство пользователя

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set pdc ;
set pec ;
set pfc ;
set pgc ;
main:
set pac.2 ;set receive pin to input mode
clr pac.3 ;set transmit pin to output mode
loop:
ifdef TRANSMIT_MODE ;transmit mode
mov a,32 ;transmit 32 bytes
mov counter,a
clr tblp ;tble=0 (data pointer)
again:
tabrdl transmit_data ;load transmit data
mov a,transmit_data
call transmit ;transmit
inc tblp ;tble+1 (point to next)
sdz counter ;transmit over? (counter-1)
jmp again ;no. next byte
jmp loop ;repeat from loop else
mov a,40h ;receive mode
mov mp0,a ;mp0-receive buffer (40h~5Fh)
mov a,32 ;load counter
mov counter,a ;
again:
call receive ;receive 1 byte
mov r0,a ;put received data to buffer
inc mp0 ;buffer index+1
sdz counter ;receive over?
jmp again ;no. continue receiving
jmp $ ;yes. stop program
endif
test .section at 1f00h ’code’
test_table: ;data fo transmitting (32 bytes)
dc 012h,034h,056h,078h,09ah,0bch,0deh,0f0h,011h,022h,033h,
044h,055h,066h,077h,088h
dc 099h,0aah,0bbh,0cch,0ddh,0eeh,0ffh,000h,055h,0aah,055h,
0aah,055h,0aah,055h,0aah
end
;==============
;= Serial.asm =
;==============
;serial port library
ifndef HEADER_HT48C70 ;depends on what type of IC is selected
#define HEADER_HT48C70
#include ht48c70.inc
endif
#include dfseript.inc
public transmit ;external functions
public receive ;
Chapter 15 Input/Output Applications
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