I/O Map - Intel AN430TX - Motherboard - ATX Technical Product Specification

AN430TX Motherboard Technical Product Specification

2.3 I/O Map

Table 36. I/O Map
Address (hex)
0000 - 000F
0020 - 0021
002E - 002F
0040 - 0043
0048 - 004B
0060
0061
0064
0070, bit 7
0070, bits 6:0
0071
0078
0079
0081 - 008F
00A0 - 00A1
00B2 - 00B3
00C0 - 00DE
00F0
0170 - 0177
01F0 - 01F7
0200 - 0207
0220 - 022F
0240 - 024F
0278 - 027F
02E8 - 02EF
02F8 - 02FF
0300 - 0301
0330 - 0331
0332 - 0333
0334 - 0335
0376
0377
0377, bit 7
0377, bits 6:0
0378 - 037F
0388- 038D
48
Size Description
16 bytes PIIX4 - DMA 1
2 bytes PIIX4 - Interrupt Controller 1
2 bytes Super I/O Controller Configuration Registers
4 bytes PIIX4 - Counter/Timer 1
4 bytes PIIX4 - Counter/Timer 2
1 byte Keyboard Controller Byte - Reset IRQ
1 byte PIIX4 - NMI, Speaker Control
1 byte Keyboard Controller, CMD/STAT Byte
1 bit PIIX4 - Enable NMI
7 bits PIIX4 - Real Time Clock, Address
1 byte PIIX4 - Real Time Clock, Data
1 byte Reserved - Board Configuration
1 byte Reserved - Board Configuration
16 bytes PIIX4 - DMA Page Registers
2 bytes PIIX4 - Interrupt Controller 2
2 bytes APM Control
31 bytes PIIX4 - DMA 2
1 byte Reset Numeric Error
8 bytes Secondary IDE Channel
8 bytes Primary IDE Channel
8 bytes Audio / Game Port
16 bytes Audio (Sound Blaster compatible)
16 bytes Audio (Sound Blaster compatible)
8 bytes LPT2
8 bytes COM4 / Video (8514A)
8 bytes COM2
2 bytes MPU-401 (MIDI)
2 bytes MPU-401 (MIDI)
2 bytes MPU-401 (MIDI)
2 bytes MPU-401 (MIDI)
1 byte Secondary IDE Channel Command Port
1 byte Floppy Channel 2 Command
1 bit Floppy Disk Change, Channel 2
7 bits Secondary IDE Channel Status Port
8 bytes LPT1
6 bytes AdLib (FM synthesizer)
continued