Intel VS440FX - Page 41

Motherboard Resources
41
Table 10. I/O Map (continued)
Address (hex) Size Description
03D4 - 03D5 2 bytes Video (VGA)
03DA 1 byte Video (VGA)
03E8 - 03EF 8 bytes COM3
03F0 - 03F5 6 bytes Floppy Channel 1
03F6 1 byte Primary IDE Channel Command Port
03F7 (Write) 1 byte Floppy Channel 1 Command
03F7, bit 7 1 bit Floppy Disk Change Channel 1
03F7, bits 6:0 7 bits Primary IDE Channel Status Port
03F8 - 03FF 8 bytes COM1
04D0 - 04D1 2 bytes Edge/level triggered PIC
0534 - 0537 4 bytes WSS Audio
LPT n + 400h 8 bytes ECP port, LPT n base address + 400h
0CF8 - 0CFB* 4 bytes PCI Configuration Address Register
0CF9** 1 byte Turbo and Reset Control Register
0CFC - 0CFF 4 bytes PCI Configuration Data Register
0FF0 - 0FF7 4 bytes CS4236 Audio Control
FF00 - FF07 8 bytes IDE Bus Master Register
FFA0 - FFA7 8 bytes Primary Bus Master IDE Registers
FFA8 - FFAF 8 bytes Secondary Bus Master IDE Registers
* DWORD access only
** Byte access only
✏
NOTE
Refer to the Audio section in Chapter 1 for specific I/O addresses that can be used by the audio
components on your motherboard. This table does not list I/O addresses that may be used by add-
in cards in the system.