Specifications

II-36 EPSON S1C62N82 TECHNICAL SOFTWARE
CHAPTER 3: PERIPHERAL CIRCUITS (LCD Driver)
Label Mnemonic/operand Comment
YCOLUM EQU 20H
;
NUMLCD:
;* DISPLAY NUMERAL ON THE LCD PANEL
;
LD Y,YCOLUM
LD MY,1 ;Select 1st column
LD A,0 ;Display "0"
CALL DSPLCD
;
LD MY,2 ;Select 2nd column
LD A,5 ;Display "5"
CALL DSPLCD
LD MY,2 ;Show the cursor on 2nd column
CALL SHCRSR
:
:
DSPLCD:
;* DISPLAY ONE NUMERAL
RDF
LD X,90H
DSPLC1:
ADD MY,0FH ;Set address of display memory
CP MY,0
JP Z,DSPLC2
;
RCF
ADC XL,0AH
ADC XH,00H
JP DSPLC1
DSPLC2:
PUSH YL
PUSH YH
LD M0,A
LD B,0
RCF
RLC A
RLC B
RCF