First post, by bubish
I just picked up a PS/1 on CraigsList with a 486sx 20MHz. And it cost me a grand total of free 😁
I had to drop a new CMOS battery in it, but otherwise it works great. I'd like to upgrade the CPU to a faster 486 (a DX2 66MHZ, if possible), but I have a couple questions on how to do it.
The board has the 487 socket on it, but the sx chip is also in a socket - rather than having to find an overdrive chip to work with the 487 socket, can I just swap the sx for a regular old dx2?
Also, I can't find any way to change the bus speed on this thing. There are no jumpers on the board, nor do I see anything in BIOS setup. Is the board stuck at 20MHz? If so, can I drop in a dx2 anyway and just run it at 40MHz?