Bios; Expansion Slot - TRIGEM NARA-M Micro-ATX Hardware Document

TriGem Computer Inc.
Research & Development Center.

2-3 BIOS

The motherboard uses a TriGem-AMI BIOS, which is stored in flash memory and can be upgraded using a disk-
based program. A new version of the BIOS can be upgraded from a diskette using the Flash Memory Update
utility.
q
Flash memory organization
Address (Hex)
FFFFC000 - FFFFFFFF
FFFF8000 - FFFBFFFF
FFFC0000 - FFF7FFFF
q
On-board device management
The BIOS can manage the devices on the motherboard over the CMOS setup menu. However, the
corresponding jumper as described Jumper setting section later can disable the built-in Audio controller.
Device
Internal Cache
PS/2 Mouse
USB Function
On board FDC
On board serial
On board parallel
On board IDE
2-4.

Expansion Slot

The motherboard support PCI and AGP function. PCI functions are extended to the additional slot with three PCI,
and AGP function is designed in the motherboard with AGP graphics controller.
q
PCI configuration space map
Bus number Device number
00 00
00 01
00 07
00 07
00 07
00 07
00 07
00 0D
01 00
00 13
00 12
00 11
Format No: TGDFBD06-A
Size
16KB
16KB
224KB
Description
Processor
VIA VT82C686A
VIA VT82C686A
VIA VT82C686A
VIA VT82C686A
VIA VT82C686A
VIA VT82C686A
Function number
00
00
00
01
02
03
04
00
00
00
00
00
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Functional description
Boot block
NVRAM block
Main BIOS block
CMOS setup menu
Enable / Disable
Enable / Disable
Enable / Disable
Auto / Enable / Disable
Auto / 3F8 / 2F8 / 3E8 / 2E8
Auto / Disable / 378 / 278 / 3BC
Disable / Primary / Secondary / Both
Device
Host/PCI Bridge(VIA VT82C694Z)
AGP Controller
PCI/ISA bridge (VT82C686A)
IDE bus master (VT82C686A)
USB Controller 1(VT82C686A)
USB Controller 2(VT82C686A)
Power management (VT82C686A)
PCI Audio(CS4281)
AGP Slot
PCI slot1
PCI slot2
PCI slot3
Default value
Enabled
Enabled
Enabled
Auto
Auto
Auto
Both