Appendix B. System Address Maps
Figure 50 (Page 2 of 3). I/O Address Map
Address (Hex)
Device
01F0–01F7
IDE channel 0
0220–0227
National 87307, serial port 3 or 4
0278–027F
National 87307, parallel port 3
02E8–02EF
National 87307, serial port 3 or 4
02F8–02FF
National 87307, serial port 2
0338–033F
National 87307, serial port 3 or 4
0340–0373
Available I/O for ISA/PCI bus
0374–0377
IDE channel 1
0377, bit 7
IDE, diskette change
0378–037F
National 87307, parallel port 2
03B4–03BB
CL-GD5446 Video chip
03BC–03BE
National 87307, parallel port 1 (system board)
03BF–03DF
CL-GD5446 Video chip
03E8–03EF
National 87307, serial port 3 or 4
03F0–03F5
National 87307, diskette channel 0
03F6
IDE channel 0
03F7, bit 7
IDE, diskette change
03F7, bits 6:0
IDE channel 0
03F8–03FF
National 87307, serial port 1 (system board)
04D0–04D1
Interrupt Edge/level control 1 and 2
0CF8–0CFB
PCI configuration address register
0CF9
Reset control register
0CFC–0CFF
PCI configuration data registers
42E8–42E9
CL-GD5446 Video
4AE8–4AE9
CL-GD5446 Video
8180–8187
CL-GD5446 Video
8190–819B
CL-GD5446 Video
81A0
CL-GD5446 Video
81C0–81FF
CL-GD5446 Video
82E8
CL-GD5446 Video
86E8
CL-GD5446 Video
8AE8
CL-GD5446 Video
8EE8
CL-GD5446 Video
92E8
CL-GD5446 Video
96E8
CL-GD5446 Video
9AE8
CL-GD5446 Video
9EE8
CL-GD5446 Video
A2E8
CL-GD5446 Video
A6E8
CL-GD5446 Video
AAE8
CL-GD5446 Video
AEE8
CL-GD5446 Video
B2E8
CL-GD5446 Video
B6E8
CL-GD5446 Video
46
Technical Information Manual