организация последовательного интерфейса
.pdf
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INIT:
456$,7869
MVI A,MI
INIT1:
PUSH PSW
:::::::$' "# ( ' + (
MVI A,SCO+RLW+MODE3 STA CW53
MOV A,L
;<= '
>?9 ,@
;<= '
;
::::::: '$# "# ( # " A1 ' %$"(
>96 ,BC@
STA CW51
STA CW51
MVI A,IR
STA CW51
:::::::D " # ( "$' &E"-(!"
POP PSW
STA CW51
:::::::D " # ( "$' &E"-&$
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MVI |
A,TXEN+DTR+RXE+RTS |
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STA |
CW51 |
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; |
RET |
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;+---------------------------------------------------------- |
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TXD: |
PUSH |
PSW |
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:::::::! ( ' #$'" |
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'A1: |
LDA |
CW51 |
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ANI |
TXRDY+DSR |
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CPI TXRDY+DSR
FGH 'A1 ::::::: ( ( ( +'
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STA |
DAT51 |
POP |
PSW |
RET |
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; |
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;+ |
---------------------------------------------------------- |
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"( +' # && %' |
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;+---------------------------------------------------------- |
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; |
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RXD:
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LDA CW51
ANI RXRRY
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:::::::( " "($"&$( ' #
STC
RZ
:::::::."' ( "$%' + +'
LDA |
DAT51 |
CMC |
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RET |
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; |
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;+ |
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;¦--------------- |
# I J J J KKKKKKKKKKKKKKKK¦ |
;+---------------------------------------------------------- |
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SETITL MNO B8PBB$ $.1 (
::::::::::::::: ( ( " ' # L 8=<QCL MNO B RBB$( " '$$A ##QC STQCL MNO B RBC$( " ' &$##QC
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S<2L MNO B=PB2@ .('."& 2 #"QU
STQUL MNO B PBU$( " ' &$#"QU
;
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MODE0: EQU 00H
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MODE4: EQU 08H
MODE5: EQU 0AH
;
Y?ZL MNO BB@ .'($"($ (' Y44L MNO CB$.'($"([D " ) 1 +' Y4@L MNO 2B$.'($"([D " ) '1 +' Y4TL MNO UB$.'($"([D " ) #
SCO: |
EQU |
00H |
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;
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<5MGL MNO BC@ ( ( '."& #& -.($ 8<YL MNO B2@ ' + '# ' # Y5ML MNO BP@ "($"& #& -.($ ;WY7L MNO BR@ ( #$"( ( ( ." MYL MNO CB$/" & "(
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TXRDY: |
EQU |
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RXRDY: |
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ZML MNO 2B$ |
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SYNDET: |
EQU |
40H |
; "$A " # $+ ($ |
DSR: |
EQU |
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; |
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END |
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