First post, by Sedrosken
I've got a GA-486VM coming, and I know it's got one of those evil barrel batteries, thankfully it hasn't leaked yet. I hear that you can, upon removing said evil battery, solder on a CR2032 holder with an appropriate diode drop (I believe to bring the charge voltage in line), and I was wondering about the specifics of that? What value diode would I use, and what's the procedure for doing so? Please bear in mind I'm a soldering novice at best.
Failing that, does it have an external battery header, and would it just be easier to use that? Does this header also try to send a recharge signal, or can I cheat and try for some combination of AA or AAA cells?
Also, if anyone happens to have a copy of the manual, can you point me to it? Cursory Googling doesn't really reveal much other than a stason.org listing of the jumper blocks which while better than nothing doesn't particularly fill me with confidence.
Semi-offtopic, as well: what are my upgrade options? I'm pretty sure I have just the basic 168-pin non-ZIF socket so I know the Pentium Overdrives are out, not that I'd want one of those anyway. Is the board considered stable at a 40MHz FSB, and would I need to swap a crystal to run that? Does the voltage regulation properly handle 3.3v CPUs? Can it handle a Cyrix Cx5x86? Would I need a specially packaged one with voltage regulation and clock multiplier overriding, since I'm pretty sure it only properly supports up to a 2x multiplier? It currently has a DX2-66 and I feel like with the 32MB of RAM it's got, 256K L2, and a decent VLB video card (I've got the TGUI-9440 1MB in hand for it) it should just about handle Diablo 1 under Windows 95 with the music turned off, and that's by far the most stressful thing I plan to run on it -- everything else will either be much less intensive, or just run under DOS anyway.