Hello guys, can this computer be upgraded with an AMD DX5 133mhz Cpu?
https://www.kupujemprodajem.com/kompjuteri-de … m_content=oglas
Hard to say, Am5x86 needs 3,3V voltage and I don't see voltage regulator on the motherboard from the photos.
I think that chipset shouldn't be an issue with a 5x86, though a BIOS update might be needed. If there isn't a 3.3V regulator on the board, you could get the 486 Socket Blaster from Scrap Computing to be able to safely use a 3.3V 5x86:
Ok. Thanks for the reply. I’ll try to find more info about the board first…
iwcham1979 wrote on 2023-05-22, 08:35:Ok. Thanks for the reply. I’ll try to find more info about the board first…
BIOS string suggests its this board https://theretroweb.com/motherboards/s/chicony-ch-498b
Wow, it does look like you got it. So it doesn’t appera to have the voltage regulator, but I see other 3.3 cpus listed… 🤔
iwcham1979 wrote on 2023-05-22, 16:11:So it doesn’t appera to have the voltage regulator
other than that huge voltage regulator next to 5V-3.3V jumpers? :]
https://github.com/raszpl/FIC-486-GAC-2-Cache-Module for AT&T Globalyst
https://github.com/raszpl/386RC-16 memory board
https://github.com/raszpl/440BX Reference Design adapted to Kicad
https://github.com/raszpl/Zenith_ZBIOS MFM-300 Monitor
