Thanks jesolo for the explanation!! There is such a wealth of knowledge on this forum, I just love it! Seems I will need to go for an SB16 or a Pro (2) then to be sure 🙁

I recently had my 486 fixed so I'm looking to give it a moderate upgrade from it's vanilla state. I was looking out for an SB Pro 2 or an SB16 when I thought of a boxed card that I have laying around. The box states it's a Galaxy Pro 16 but looking at the markings on the card, it is supposed to be …

Aha thanks, will remember that for the future problems 😀 Just taken out the board and someone is going to replace/repair the RTC chip. There is no much fun in having to configure the BIOS every time...

Dismantled my 486 to have the RTC chip replaced/repaired. That's beyond my skill 😀

EDIT: found it after dismantling the whole PC because I will have the RTC chip replaced. It's a PKM-3363Y. Is it also normal that it refuses to boot due to the empty CMOS???? I can fiddle in the BIOS, save and reboot only to get the press F1 key message again...

Recently I acquired a Commodore 486DX-33C PC. The CMOS battery is dead so I decided to open it up. Now the first "problem" is the RTC chip that is soldered to the board but that's another problem. With regards to upgrading the system in the future, I am trying to find info about the mainboard but so …