求助,各位高手能告诉我这个通讯协议是什么吗?
ORG 0023H
RET
JBC RI,UARTI1
RETI
UARTI1: PUSH ACC
PUSH PSW
PUSH DPL
PUSH DPH
PUSH 0
SETB SE1
MOV A,SBU
MOV DPL,BP
MOV DPH,BPH
CJNE A,#0CH,UAR1
MOV TXBZ1,#01H
LJMP UARTI5
UAR1: PUSH ACC
MOV A,TXBZ1
CJNE A,#0,UAR101
POP ACC
LJMP UARTI5
UAR101: CJNE A,#01,UAR111
POP ACC
CJNE A,#41H,UAR108
MOV DPTR,#9200H
MOV TXBZ1,#0FFH
LJMP UARTI5
UAR108: CJNE A,#42H,UAR109
MOV DPTR,#0FF00H
MOV TXBZ1,#0FFH
LJMP UARTI5
UAR109: MOV TXBZ1,#0
LJMP UARTI5
UAR111: POP ACC
UAR112: MOVX @DPTR,A
CJNE A,#0DH,UARTI49
MOV A,#0FFH
MOVX @DPTR,A
INC DPTR
MOVX @DPTR,A
INC DPTR
MOVX @DPTR,A
INC DPTR
MOVX @DPTR,A
INC DPTR
MOV TXBZ1,#0
MOV BZ,DPH
; MOV JRFS,#1
; MOV LKFS,#1
; MOV SD,#1
; MOV TLSJ,#1
LJMP UARTI5
UARTI49:INC DPTR
UARTI5: MOV BP,DPL
MOV A,DPH
CJNE A,#0FFH,UAR9
UAR9: JC UAR91
MOV A,#0FFH
UAR91: MOV BPH,A
POP 0
POP DPH
POP DPL
POP PSW
POP ACC
RET
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