Sadly, it's doing the weird stuff again. Random booting from cold/mostly black screen/dead/etc. No amount of pressure on the cache/CPU will elicit a response. Cleaned it properly using solvent cleaner. After all the "healing" it did over the past five years, perhaps this is the most I'll ever get out of it!
Interestingly, it uses 512K L2 cache on the die of the CPU, so I could rule out the existing backside cache by disabling it/lifting a pin or two perhaps. Or, I could consider downlocking the CPU to say 700 - 800Mhz, as it behaves like an overclocked Pismo CPU (which I've had experience with - tried doing this to a few 400/500Mhz modules, and this is what they do when you go too high).
Still, a nice project. Or perhaps it should go back in the drawer for a few more years. Still, the first time I plugged it in yesterday, it worked fine until shutdown (but with me pressing a large copper heatsink on the CPU).
JB
Interestingly, it uses 512K L2 cache on the die of the CPU, so I could rule out the existing backside cache by disabling it/lifting a pin or two perhaps. Or, I could consider downlocking the CPU to say 700 - 800Mhz, as it behaves like an overclocked Pismo CPU (which I've had experience with - tried doing this to a few 400/500Mhz modules, and this is what they do when you go too high).
Still, a nice project. Or perhaps it should go back in the drawer for a few more years. Still, the first time I plugged it in yesterday, it worked fine until shutdown (but with me pressing a large copper heatsink on the CPU).
JB