Hey guys,

First post and my designated expert haven for all things 486...

So I won't expect you guys will know much about the Acorn RISC PC x86 Card I have (A fairly clever board with an ASIC chip to emulate most x86 board shenanigans).

You guys certainly know 486 chips... The card has a fault, it will not boot with L1 enabled, mostly hangs just after the BIOS screen. Once L1 is disabled everything seems stable, including the 512KB L2 cache upgrade I did I tested it with CACHECHK in DosBench, of course it's cripplingly slow (expected), so I guess the question is... is this a knackered CPU? I'm going to try replacing the TAG ram, but I know that's really for L2 (getting a bit clutch in my thinking), this is massively different to a typical 486 board I know, but just wondered if anyone has had something like this in their x86 mobos?

The card isn't in great shape, fair bit of corrosion, god knows how it was stored, the images are out of date, as I have 4 x IS61C1024AL-12JLI on it now (512KB) which works great on another PC Card I have, so the chips are fully compatible and still in production more importantly.

Thanks IA!