RU128 BIOS with Symbios Logic / NCR SCSI BIOS

loophole · Post by **loophole** » Fri Aug 23, 2002 8:52 pm

A little while ago, I modded the RU128 BIOS and added the SCSI BIOS for the SYM53C810 and SYM53C860 SCSI chipsets. If anybody would like a copy, they can download it from:

http://www.geocities.com/rdtlgi/bp6_bios.html

The BIOS works fine for me, so it should work great for everybody else as well. I hope this helps out some people.

loophole · Post by **loophole** » Sun Aug 25, 2002 5:43 pm

Some of the cheaper SCSI cards didn't have the firmware built on the SCSI card because they just assumed that the user would be using the SCSI card with one of their own motherboards, that had the SCSI firmware already embedded in the system BIOS. So this is essentially a BIOS for all those cards out there.

loophole · Post by **loophole** » Mon Aug 26, 2002 10:11 pm

Sure, it can be done with any SCSI card as long as you can find a downloadable BIOS firmware somewhere to extract the code from.

Then, just use cbrom to add the firmware to the current RU (whichever flavour you prefer) BIOS, but you have to make sure it's not too big for the BIOS ROM to hold - The RU128 has about 120kb free of compressed space, if I remember correctly (Don't quote me on that though).

The Symbios SCSI BIOS was only 50kb uncompressed, which translated to about 23 or 27 kb compressed. But the BIOSs that have added PIII microcode would have less room on there (obviously because of all the new microcode patches added

).

Just follow this link for more detailed info:

http://www.froggy.com.au/frogge/pepper/bmreport1.html