1-8 Technical Information
Table Section 1-3 I/O Address Map
Address (Hex)
I/O Device Name
0064
Keyboard controller, command/status byte
0070, bit 7
PIIX3 - Enable NMI
0070, bits 6 through 0
PIIX3 - Real time clock, address
0071
PIIX3 - Real time clock, data
0078-0079
Reserved - board configuration
0080-008F
PIIX3 - DMA page registers
00A0-00A1
PIIX3 - Interrupt controller 2
00C0-00DE
PIIX3 - DMA controller 2
00F0
Reset numeric error (numeric data processor)
0170-0177
Secondary IDE channel
01F0-01F7
Primary IDE channel
0200-0207
Game port
0220-022F
CS4236 audio
0278-027F
Parallel port 2
02F8-02FF
On-board serial port 2
0330-0331
MPU-401 (MIDI)
0376
Secondary IDE channel command port
0377
Secondary IDE channel status port
0378-037F
Parallel port 1
0388-038B
CS4236 audio
03BC-03BF
Parallel port 3
03E8-03EF
Serial port 3
03F0-03F5
Floppy channel 1
03F6
Primary IDE channel command port
03F7 (write)
Floppy channel 1 command
03F7, bit 7
Floppy disk change channel 1
03F7, bit 6 through 0
Primary IDE channel status port
03F8-03FF
On-board serial port 1
04D0-04D1
Edge/level triggered
LPT + 400h
ECP port, LPT + 400h
0608-060B
CS4236 audio
0CF8*
PCI configuration address register