First post, by Socket3
- Rank
- Oldbie
Hi. I got my hands on an IBM PC100 Type 6260 (dumpster find) and I'm trying to get it up and running, and upgrade it a bit to fit my needs. I have a bit of a soft spot for these old IBM machines, so although I have other (working) socket 7 hardware, I'd love to get this one up and running.
The PC is a budget model, sporting a pentium 75, 8mb of ram (witch at one point was upgraded to 16mb), no L2 cache whatsoever, a CD-ROM and a 800mb disk drive. My plan for it was to have it play late dos games and windows 95/98 games. As such, I upgraded the PC to a 133MHz pentium, 32mb of ram, and tried to add L2 cahce (256kb) and a larger 8gb disk drive. Here I encountered 2 problems:
Problem 1 - the PC is unstable with L2 cache installed. It is configured correctly, and the cache SRAM was taken off a working motherboard. It refuses to enter win95 with cache installed, and sometimes it will hang during boot. I took the sram chips off the IBM and tested them (again) in the motherboard they came with, and they work perfectly. They are 15ns winbond 8kb cache chips. I also tried some 8kb 15ns Elantron? chips - same issue.
Problem 2 - I can't get any drive larger then 1.6gb to run in it. I tried a 8gb drive and a 4gb drive, both seagate. Both are detected in bios correctly, buy the PC will hang during boot. I even tried setting them as Slave drives alongside the 800mb drive the PC100 came with - it still hang during boot. I could only get it to boot with a 1.6gb drive and it's original 800mb western digital.
Regarding problem 2, I'm thinking maybe a BIOS update might resolve it - unfortunately I have no idea where I can find an updated bios for it. Does anyone know if the old IBM site was archived somewhere? As for problem 1, I noticed the manual states the computer needs one 8kb 3.3v SRAM chip as TAG, and 8x8kb 5v chips... I have no idea what voltage my chips require. The Winbond chips are off a socket 5 motherboard - a Pine Tech PT730