Mitsubishi Motors DS5000TK - Manual (Page 162)

USER’S GUIDE
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162
ORL A, B
MOV B, A
SJMP HEX_LP
;
HEX_OUT:
MOV B, #2
OUT_LP:
SWAP A
PUSH ACC
ANL A, #0FH
CJNE A, #10, $+3
JC HEX_OK
ADD A, #7
HEX_OK:
ADD A, #30H
LCALL CHAR_OUT
POP ACC
DJNZ B, OUT_LP
RET
;
TEXT_OUT:
PUSH ACC
WT1:
CLR A
MOVC A, @A+DPTR
INC DPTR
JZ WT2
LCALL CHAR_OUT
SJMP WT1
WT2:
POP ACC
RET
;
CHAR_IN:
JNB RI, CHAR_IN
MOV A, SBUF
CLR RI
RET
;
CHAR_OUT:
JNB TI, CHAR_OUT
MOV SBUF, A
CLR TI
RET
;
RBYTE:
PUSH MCON ; Save MCON register.
ORL MCON, #4 ; Switch to PES.
MOVX A, @R0 ; Read the register.
DEC R0 ; Decrement the pointer.
POP MCON ; Restore MCON register.
RET ; Return.
;
WBYTE:
PUSH MCON ; Save MCON register.
ORL MCON, #4 ; Switch to PES.
MOVX @R0, A ; Read the register.
DEC R0 ; Decrement the pointer.