Shuttle Support * Mainboard HOT-433 (486, AT, UMC)

Chapter set above: Mainboards - older products

Mainboard HOT-433 (486, AT, UMC)

Chapter set below:
Specification
Versions
Information and Solutions
Download HOT-433
Configuration tables for HOT-433

HOT-433 Version 1-3

HOT-433 Version 4

Specification

Chipset
UMC 8881F, 8886AF/BF and 8663AF/BF
CPU support
Intel 486SX
Intel 486SX S-Series
Intel 486DX/DX2
Intel 486DX/DX2/DX4 S-Series
Intel P24D
AMD 486DX/DX2/DX4 NV8T, N8T
AMD 486DX4 Enhance SV8B
AMD Am5x86-P75 (AMD-X5-133)
Cyrix Cx486S (M6)
Cyrix Cx468DX/DX2/DX4 (M7)
Cyrix 5x86 (M1sc)
UMC 486S U5
Expansion slots
4 x 32 Bit PCI
4 x 16 Bit ISA
Onboard Interfaces
Dual Channel Enhanced PCI IDE Controller for up to 4 devices
1 x Floppy
1 x Parallel (SSP/EPP/ECP)
2 x Serial (16550 compatible, fifo)
Memory
4 x Sockets for 72-pin SIMM Modules in sizes of 1, 2, 4, 8, 16, 32 and 64 MB
maximum memory size: 256 MB FPM/EDO
Cache Memory
256 kB SRAM L2-Cache
Upgradeable up to 1024 kB / 512 kB
Power Management
Power Management Modes: Doze, Standby and Suspend
supports Microsoft APM
EPMI connector
BIOS
AMI System WinBIOS
bundled with Symbios PCI SCSI BIOS (SDMS-Support for 53810 SCSI-Host controller)
1 MBit EPROM (Flash-EPROM optional)
Size
AT-Format 22 x 26 cm (Version 1-3) or 22 x 22 cm (Version 4)

Versions

Version 1...3 Cache: two banks (2 x 4 chips) Size: 22 x 26 cm with EPROM (optional Flash-EPROM)	Version 4 Versions ID: 4.0 Size: 22 x 22 cm with EPROM

Bios-Version
You can see the bios version on the bottom side of the screen during the power-on-self-test, for example „41-P313-...“ for the version 13. Bios version 33 can only used with mainboard 433 Version 4 (22x22cm). If you have a flash eprom on your mainboard (without a window on the chip), then it supports ISA-PnP and you can update bios version by programming it. For Flash EPROMs you will need a binary file like e.g. 433AUS25 - the letter S means: for Flash EPROM. The letter E in 433AUE25 means: for EPROMs.

PS/2 mouse
HOT-433 mainboard with 5Pin-DIN-keyboard connector onboard doesn't support PS/2 mouse function.

Compatibility problems
there is a insoluble hardware compatibility problem with AVM Fritz card (ISA/ISDN) with HOT-433. Any kind of PCI SCSI host adapter should be inserted into PCI slot 1, next to ISA slot. Block mode should be disabled, if problems with IDE harddisks occur. In case of other problems always try a BIOS update.

Password lost
The password is stored in the CMOS memory of the Dallas R.T.C. chip (Real Time Clock) . The RTC-Chip has to be changed in case the password has been forgotten. On your own risk you can perform this last solution: change the Flash-EPROM with a similar type from any Pentium mainboard with AWARD bios and start HOT-539 for some seconds. Then you change again. Started again with the original EPROM a message may appear: „Checksum failure“ and CMOS is cleared.

Driver for onboard IDE Controller
two IDE driver are available. Check if the chipset marking ends with „AF“ or „BF“ since each chipset needs ist special driver disk. For the „BF“-type Windows 95 driver are available.

AMD NV8T and Power Management
using the AMD 486 N8T or NV8T CPU (non-S-series) in the Power Saving Mode occupies IRQ 10.

5x86
Cyrix 5x86 is supported by bios version 15 or later, AMD 5x86 by version 23 or later.

Windows NT installation
bugfix for Windows NT installation failure by bios version 25 or later.

Download HOT-433

You can download useful files here:

Next Chapter: Configuration tables for HOT-433

© 1999 Shuttle Inc., Last modification: 03/08/2000
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