MOS Integrated Circuit Data Sheet

249
µ PD17062
Sample program
If the CROM data and VRAM data are specified as shown above, the display on the screen varies depending
on the CROM bank.
The CROM bank is specified by CROMBNK (b
0 at 30H).
The following description applies to the above example.
(1) CROMBNK = 0
Display “CH” appears on the screen. The control data used in this case is “control data 1”.
(2) CROMBNK = 1
Display “VO” appears on the screen. The control data used in this case is “control data 1”.
01 234 5 6789AB
800001 400
1
CROM data
VRAM data
0800H
080FH
0810H
081FH
0C00H
0C0FH
0C10H
0C1FH
“C”
“H”
“V”
“O”
; Control data 1
; Control data 2
; Control data 1
; Control data 2