rick12373 wrote:In that step by step guide to hacking the chip he says right at the end that if he were to do it again he would try drilling some holes in and soldering in some wires so that an external battery can be connected. He has marked on a picture where this should be done but without paying and registering the site will not let you see a big version of the picture. That is annoying as it sounds like it may be an easier way to fix it. I haven't tried firing the board up yet but will try tonight. I put it in the new, old case I found yesterday, put in the graphics card and put a heat sink and cooler on the CPU (had a brand new 486 heat sink and fan in a box that had never been opened). You don't have to use thermal grease for these old CPU's do you? I couldn't see any on the old heat sink I took off.
I have ordered one of those chips from eBay. If I use it and get it to work I will let you know.
Did it arrive? I ordered one too. The packaging was poor - the pins were bent. It's just an old Dallas chip. And I mean old. The BIOS POST screen says the battery is dead. What a waste of time!
The existing Dallas chip was a "DS12887A" chip. The "new" chip does not have the letter "A" at the end, just DS12887. Also, one pin on the "new" chip looks as if it has been chopped off. Is this for the "internal RAM" - to store a password - which features on the "A" chips?
Maybe the BIOS POST error message of :
System battery is dead - replace and run SETUP
real time clock error
was a "false" error message. Perhaps the BIOS was confused about not finding a fully compatible Dallas chip for this mobo?