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EXP8551 bios	&
			jumper page

With BIOS upgrades, ALL jumper settings and DRAM installation.

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Here you can download several flashbios versions for the DataExpert EXP8551 motherboard.

CHINESE VERSION

If you have problems with your system and you are using AmiBIOS, you should try Award or MR BIOS. I do NOT recommend using AmiBIOS 3.0 or 3.0b, which can be found here. If your EXP8551 revision number and/or I/O chipset does not match any MR BIOS version, you might try a version that matches your board the most, although I do not recommend trying this unless you are in serious trouble.

AmiBIOS 2.0 : The bios that came with my board. Just in case you did not make a backup. (I use EXP8551 Ver 1.2 Winbond I/O)

MR BIOS 3.28 : This is for Ver 1.2 any I/O chipset.

MR BIOS 3.30 : This is for Ver 1.2 with Winbond I/O.

MR BIOS 3.30 : This one is for UMC I/O any revision.

The I/O chips are close to the connectors of the serial and parallel port, I believe there are two square chips, just look what brandname is on them.

WARNING: Award BIOS does not seem to work on all boards.

Award BIOS 4.51PG : This one is for any I/O any revision and supports Cyrix MX, AMD K5/K6 and IDT C6 WinChip. Some sort of SCSI support as well, and LS120 drives should also work. When I tested this I could not boot from my harddrive that I partitioned with FAT32 using MR BIOS, so beware. It appears that INT13h is not supported. You may have to repartition your harddrive(s), or use this program to convert: DLBA v1.1.

Award BIOS 4.51PG : This one is for people who use a PS2 mouse, otherwise no difference with the above version.

Award BIOS : I never used this, but it is the latest version from http://www.dataexpert.com.tw .

Reasons to use Award or MR BIOS:

New hardware: AmiBIOS often does not recognize newer hardware like videocards and harddisks. Using Award or MR BIOS usually solves this.

Windows 95: With AmiBIOS Windows 95 (any version) simply does not recognize the Triton FX chipset properly and as a result does not use the full capabilities of it. Be sure to run 'Hardware Wizard' after you install a new bios, in fact, windows might do this automaticly. There should be a increased system performance afterwards.

DOS: With Award or MR BIOS you have more upper memory free and disk access is faster.

Common trouble with MR BIOS:

IDE CD-ROM drive not recognized: Change the jumper on the CD-ROM drive from SLAVE to MASTER.

Occasional hangups: Increase the DRAM timings.

PIO MODE 4: Do not use it. Use the MR BIOS default value instead. MR BIOS is not to blame, the Triton FX chipset can not handle the speed.

NOTE: All you need to update your bios is included in every file. Read included documentation before use. Remember to boot 'clean'.

I do not know jumper settings for other boards! Go here instead: http://www.dataexpert.com.tw or http://www.dataexpert.com .

To make things easier for everybody, I have put ALL jumper settings on this page. Please note that there are no jumpers for different voltages or processors. If you do not have a voltage regulator module installed only single voltage (3.3V) processors can be used, like NON-MMX intel or IDT C6 WinChip. Beware that 200MHz processors might not run stable, increase DRAM timings as much as possible. It is normal if the bios reports it is running at 180MHz.