Notes
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ORG 0100H
LCDstatus equ 0FF2EH
LCDcontrol equ 0FF2CH
LCDdataWR equ 0FF2DH
LCDdataRD equ 0FF2FH
#define HOME 0X80
#define INITDISP 0X38
#define HOM2 0Xc0
#define LCDON 0x0E
#define CLEAR 0X01
LCDcntrlWR MACRO x
LOCAL loop
loop:
MOV DPTR, #LCDstatus
MOVX A, @DPTR
JB ACC.7, loop
MOV DPTR, #LCDcontrol
MOV A, x
MOVX @DPTR, A
ENDM
LCDcharWR MACRO
LOCAL loop1, loop2
PUSH ACC
loop1: MOV DPTR, #LCDstatus
MOVX A, @DPTR
JB ACC.7, loop1
loop2: MOV DPTR, #LCDdataWR
POP ACC
MOVX @DPTR, A
ENDM
init_LCD MACRO
LCDcntrlWR #INITDISP
LCDcntrlWR #CLEAR
LCDcntrlWR #LCDON
ENDM
PISZ:
LCDcharWR
RET
RES: init_LCD
RET
DRUGA:
LCDcntrlWR #HOM2
RET
START:
CALL RES
MOV A, #41H
CALL PISZ
MOV A, #42H
CALL PISZ
MOV A, #43H
CALL PISZ
CALL DRUGA
MOV A, #44H
CALL PISZ
MOV A, #45H
CALL PISZ
MOV A, #46H
CALL PISZ
NOP
NOP
NOP
END
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