retro games 100 wrote:My new rig works! :shocked: […]
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My new rig works! 😳
I think it's a 486 dx2-66. The mobo says: UC4914-G, Rev 1.0
I'm really pleased this thing works. 😁 I gave up with the 'evil acid box'; it's only worthwhile purpose now is to supply the juice to the new mobo. I couldn't be bothered to wrestle with the HDD stuck inside the packard bell, so that stayed put.
For the dvd-reader, I am using an ISA based Acculogic s/IDE2 CD-ROM controller card. For the HDD & floppy drive, I've stuck those on to a VLB multi i/o card.
Having spent 3 whole days with a dodgy FIC board and the aforementioned evil acid machine, this health and safety extravaganza took less than 30 minutes to get running. I was stunned that I got this one right first time.
I've just got one query for now - when I powered up this beast for the very first time, it warned me of a low cmos battery. I've looked on the mobo, and I cannot spot either an evil chunky battery, or a button battery.
Hi there mate 😀 I know this thread is a million years by now, probably you don't even have that 486 anymore... Anyway, I just got one of these boards up and running myself, so just wanted to give some input for future reference.
retro games 100 wrote:I've looked on the mobo, and I cannot spot either an evil chunky battery, or a button battery.
I'm not 100% certain if this is the original battery, but it very much looks so:
Here's the battery connector on the motherboard:
About the board reporting 16MHz CPU speed, I've also encountered this with the turbo button switched ON. It appears to happen when restarting the computer without first shutting it down. Deactivating and reactivating turbo when the OS's fully loaded doesn't work at all. I also run an Intel DX2-66 in my system.
One final thing: if you had a CT2290 ISA in your rig, and noticed the FDD wouldn't work at startup... swap for something else. From my experience, the CT1740 ISA would cause the same trouble for a while, but with the FDD jumping back to life after ~30 seconds. Starting the machine with no sound card at all would always make the FDD happy to run. Just a tip if someone else encounter this problem. 😀