I/O Map - Intel VS440FX Technical Specification

VS440FX Motherboard Technical Product Specification

2.3 I/O Map

Table 10.

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
0080 - 008F
00A0 - 00A1
00C0 - 00DE
00F0
0170 - 0177
01F0 - 01F7
0200 - 0207
0220 - 022F
0278 - 027F
02E8 - 02EF
02F8 - 02FF
0330 - 0331
0376
0377
0378 - 037F
0388 - 038B
03B4 - 03B5
03BA
03BC - 03BF
03C0 - 03CA
03CC
03CE - 03CF
40
Size Description
16 bytes PIIX3 - DMA 1
2 bytes PIIX3 - Interrupt Controller 1
2 bytes Super I/O Controller Configuration Registers
4 bytes PIIX3 - Counter/Timer 1
4 bytes PIIX3 - Counter/Timer 2
1 byte Keyboard Controller Byte - Reset IRQ
1 byte PIIX3 - NMI, Speaker Control
1 byte Keyboard Controller, CMD/STAT Byte
1 bit PIIX3 - Enable NMI
7 bits PIIX3 - Real Time Clock, Address
1 byte PIIX3 - Real Time Clock, Data
1 byte Reserved - Board Configuration
1 byte Reserved - Board Configuration
16 bytes PIIX3 - DMA Page Registers
2 bytes PIIX3 - Interrupt Controller 2
31 bytes PIIX3 - DMA 2
1 byte Reset Numeric Error
8 bytes Secondary IDE Channel
8 bytes Primary IDE Channel
8 bytes Audio / Game Port
16 bytes CS4236 Audio
8 bytes LPT2
8 bytes COM4 / Video (8514A)
8 bytes COM2
2 bytes MPU-401 (MIDI)
1 byte Secondary IDE Channel Command Port
1 byte Secondary IDE Channel Status Port
8 bytes LPT1
4 bytes FM Synthesis
2 bytes Video (VGA)
1 byte Video (VGA)
4 bytes LPT3
2 bytes Video (VGA)
1 byte Video (VGA)
2 bytes Video (VGA)
continued