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Vig390s Motherboard Manual V1.0
113
Motherboard Resources
Table 80: Typical Memory Map
Address Range
(decimal)
Address Range (hex) Size Description
1024 K - 393216 K 100000 - 18000000 383 MB Extended memory
928 K - 1024 K E8000 - FFFFF 96 KB System BIOS
896 K - 928 K E0000 - E7FFF 32 KB System BIOS (Available as UMB)
800 - 896 K C8000 - DFFFF 96 KB Available high DOS memory (open
to ISA and PCI bus)
640 K - 800 K A0000 - C7FFF 160 KB Video memory and BIOS
0 K - 512 K 00000 - 7FFFF 512 KB Conventional memory
Table 81: DMA Channels
DMA Channel Number Data Width System Resource
0 8- or 16-bits Open
1 8- or 16-bits Parallel port
2 8- or 16-bits Floppy drive
3 8- or 16-bits Parallel port (for ECP)/audio
4 8- or 16-bits Reserved - cascade channel
5 16-bits Open
6 16-bits Open
7 16-bits Open
Table 82: I/O Map
Address (hex) Size Description
0000 - 000F 16 bytes DMA 1 controller 1
0020 - 0021 2 bytes Interrupt controller 1
002E - 002F 2 bytes Super I/O controller configuration registers
0040 - 0043 4 bytes Counter/Timer 1
0048 - 004B 4 bytes Counter/Timer 2
0060 1 byte Keyboard Controller Byte
0061 1 byte NMI, Speaker Control
0064 1 byte Keyboard controller
0070 - 0071 2 bit Real time clock controller
0080 - 008F 16 bytes DMA page registers
00A0 - 00A1 2 bytes Interrupt controller 2
00B2 - 00B3 2 bytes APM control
00C0 - 00DE 31 bytes DMA 2
00F0 - 00FF 16 byte Numeric processor
0170 - 0177 8 bytes Secondary IDE controller
01F0 - 01F7 8 bytes Primary IDE controller
0200 - 0207 8 bytes Audio/ game port/ joystick
0220 - 022F 16 bytes Audio (Sound Blaster compatible)
o228 - 022F 8 bytes LPT3
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 - 0377 2 byte Secondary IDE channel command port
0120 - 0127 8 byte Audio controller
0274 - 0277 4 bit I/O read data port for ISA Plug and Play
enumerator
0378 - 037F 8 bytes LPT1
0388 - 038D 6 bytes AdLib (FM synthesizer)