I/O Address Map - Casio QT-2000 Service Manual

5-3. I/O Address map

0000h
Rererved
(INT Status)
1000h
System
2000h
System
3000h
System
4000h
System
5000h
System
6000h
Reserved
7000h
Reserved
8000h
ARCNET R/W
9000h
Back light control
for LCD1
A000h
Back light control
for LCD2
B000h
COM3 select W
C000h
Flash bank W
D000h
Future
E000h
Future
F000h
Reserved
FFFFh
Interrupt status port
There are 8 bits data for status per 1 port.
000h
100h
200h
300h
400h
500h
600h
700h
800h
900h
A00h
B00h
C00h
D00h
E00h
F00h
I/O port
— 20 —
System
Port #1
Port #2
Port #3
Port #4
Port #5
Port #6
Port #7
Users Area
Port #8
( 15 ports )
Port #9
Port #10
Port #11
Port #12
Port #13
Port #14
Port #15