I am trying to write a program to display custom character on LCD using CGRAM. I am using 68HC11 MCU and 20x2 LCD for this purpose.
I attached my code in attachment. I don't seem to get anything on LCD. The HEX pattern, CC, is supposed to look like a speaker. Any help would great.
CC FCB $06,$0f,$0f,$0f,$0f,$0f,$0f,$00
MAIN JSR LCD_CLR
DSP_CC LDY #$40
LCD_CLR LDAA #$01
LCD_TEST TST $1400
LCD_DSP LDAA 0,X