First post, by epictronics
- Rank
- Newbie
Hi all,
I have run in to a minor problem with my PS/1 board.
The PS/1 service manual floating around online is dated March 1993 but my 2133-540 is made in december.
Some of the info seems like it's applicable to my board but there is at least some important info missing.
I want to upgrade the 486SX25 to the fastest possible 486.
Unfortunately the service manual does not cover my december board and therefor I don't have the jumper settings and don't even know if I can run it at 33 or handle the DX4-100.
It has jumpers labeled 'micro select' numbered J23,j24,j25 and my guess is they might select the speed but I don't know in what position and for what speeds.
There is a hack to make the 169 pin socket use a regular 486 but I don't know what my CPU options are really.
All suggestions much appreciated