Well, unfortunately I found a board that this mod *doesn’t* work for. I bought a Micronics (Micron) M54Li since it would be able to cache more than 64MB of RAM — and my modded Tilamook locks up if L2 is enabled. I even tried adding split rail detect mod even though the CPU already booted without it.

So, this isn’t a silver bullet. There are apparently motherboards that you still can’t enable L2 on…

aspiringnobody wrote on 2025-10-17, 14:57:

I bought a Micronics (Micron) M54Li

This is a really very old generation of a socket 5 mainboard, being on the market at the same time with the earlier socket 4 for the first generation of Intel Pentium.
Even it is equipped with a SiS-chipset, it will have probably big problems to work with this last Tilamook-generation of a Pentium 1.
Aside from that, this board does not offer dual-voltage (Vcore and V I/O) for any MMX-CPU, so how did you solve this problem?

gonzo wrote on 2025-10-20, 08:07:

This is a really very old generation of a socket 5 mainboard, being on the market at the same time with the earlier socket 4 for […]
Show full quote

aspiringnobody wrote on 2025-10-17, 14:57:

I bought a Micronics (Micron) M54Li

This is a really very old generation of a socket 5 mainboard, being on the market at the same time with the earlier socket 4 for the first generation of Intel Pentium.
Even it is equipped with a SiS-chipset, it will have probably big problems to work with this last Tilamook-generation of a Pentium 1.
Aside from that, this board does not offer dual-voltage (Vcore and V I/O) for any MMX-CPU, so how did you solve this problem?

I’ve got a couple of powerleap interposers. V I/O is still 3.3V but that’s true of pretty much every board so I guess I’m just living with that part.

Edit: isn’t HX relatively new as far as socket 5 goes? It’s from 96 I would have thought it would be one of the last.