Motherboard resources – Intel Vig390s User Manual
Page 114
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)