Intel VS440FX - I;O Map

VS440FX Motherboard Technical Product Specification
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2.3 I/O Map
Table 10. I/O Map
Address (hex) Size Description
0000 - 000F 16 bytes PIIX3 - DMA 1
0020 - 0021 2 bytes PIIX3 - Interrupt Controller 1
002E - 002F 2 bytes Super I/O Controller Configuration Registers
0040 - 0043 4 bytes PIIX3 - Counter/Timer 1
0048 - 004B 4 bytes PIIX3 - Counter/Timer 2
0060 1 byte Keyboard Controller Byte - Reset IRQ
0061 1 byte PIIX3 - NMI, Speaker Control
0064 1 byte Keyboard Controller, CMD/STAT Byte
0070, bit 7 1 bit PIIX3 - Enable NMI
0070, bits 6:0 7 bits PIIX3 - Real Time Clock, Address
0071 1 byte PIIX3 - Real Time Clock, Data
0078 1 byte Reserved - Board Configuration
0079 1 byte Reserved - Board Configuration
0080 - 008F 16 bytes PIIX3 - DMA Page Registers
00A0 - 00A1 2 bytes PIIX3 - Interrupt Controller 2
00C0 - 00DE 31 bytes PIIX3 - DMA 2
00F0 1 byte Reset Numeric Error
0170 - 0177 8 bytes Secondary IDE Channel
01F0 - 01F7 8 bytes Primary IDE Channel
0200 - 0207 8 bytes Audio / Game Port
0220 - 022F 16 bytes CS4236 Audio
0278 - 027F 8 bytes LPT2
02E8 - 02EF 8 bytes COM4 / Video (8514A)
02F8 - 02FF 8 bytes COM2
0330 - 0331 2 bytes MPU-401 (MIDI)
0376 1 byte Secondary IDE Channel Command Port
0377 1 byte Secondary IDE Channel Status Port
0378 - 037F 8 bytes LPT1
0388 - 038B 4 bytes FM Synthesis
03B4 - 03B5 2 bytes Video (VGA)
03BA 1 byte Video (VGA)
03BC - 03BF 4 bytes LPT3
03C0 - 03CA 2 bytes Video (VGA)
03CC 1 byte Video (VGA)
03CE - 03CF 2 bytes Video (VGA)
continued
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