MOS Integrated Circuit Data Sheet

269
µ PD17062
The sample program follows:
Program start
; Performs initialization such as clearing RAM.
Initialization
SET1 IDCDMAEN ; Selects the DMA mode.
CLR1 IDCEN ; Turns off the display.
;
; ** Channel display routine **
;
CLR1 CROMBNK ; Sets the CROM bank to 0.
;
MOV VRAM0, #1000B ; Specifies control code 1.
MOV VRAM1, #0000B
;
MOV VRAM2, #0 ; Specifies display character data C.
MOV VRAM3, #0CH
;
MOV VRAM4, #0 ; Specifies display character data H.
MOV VRAM5, #0DH
;
MOV VRAM6, #1000B ; Specifies control code 2.
MOV VRAM7, #0001B
;
MOV VRAM8, #0 ; Specifies display character data 0.
MOV VRAM9, #0
;
MOV VRAMA, #0 ; Specifies display character data 2.
MOV VRAMB, #2
;
MOV VRAMC, #0100B ; CR (carriage return)
MOV VRAMD, #0000B
;
MOV VRAME, #0100B ; CR (carriage return)
MOV VRAMF, #0000B
;
LOOP:
SKF1 INTVSYN ; Make sure Vsync = low level and turns on the display.
BR LOOP
SET1 IDCEN ; Turns on the display
.........