Hello everyone!

I have a mid nineties Pentium 120MHz computer built by a system integrator. It has an ASUS P/I-AP55T motherboard with 256K of cache soldered to the board. L2 is enabled in bios setup and the physical jumper for selecting cache size is set correctly, but for some unknown reason post fails to detect any L2 cache. Running speedsys also shows no L2 present (there's a plateau for L1, but no second plateau where L2 should be).

I've heard about fake cache chips, but I always thought that concerns only DIP packaged memory chips. In my case the chips are 100 pin QFP's (Winbond W25P010AF-8). I'll attach an image of the chip configuration.

The motherboard is same as this: https://theretroweb.com/motherboards/s/asus-p-i-ap55t

Any suggestions on how to troubleshoot further, or does this look like a case of faux chips?

Thanks!