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Thread: Dump BIOS on a 486?

  1. #1

    Default Dump BIOS on a 486?

    I've got the old PC-CHIPS VESA 486 board, the one you could order with any chipset, they just relabeled the chip. I'm trying to dump the BIOS from it so I can write it to another chip, to get a second identical board working. I've been searching around and maybe it's the heat, but I can't seem to figure out how to do this.

    Awdflash has the most bizarre cmd-line switches, and the only version I could actually get to 'work' v1.2, gave me a dump of 0 bytes.

    I tried NSSI, that gave me a 64K dump, but that seems small for a late model 486. Uniflash requires PCI and I can't download flashrom for DOS.

    Is there something that works along the lines of:
    DUMP -f bios.bin

    I want to try to use the hot-flash method. Last time I did this was 10+years ago, so I can't remember any of the utilities I used. I seem to be stumbling at the first hurdle, can't even figure out how to read the BIOS.

    I did have an eeprom programmer coming in the post from China, but it looks like the seller's been kicked off ebay, and today I've finally got a refund. So I'll have to order another.
    Looking for: OMTI SMS Scientific Micro Systems 8610 or 8627 ESDI ISA drive controller, May also be branded Core HC, Please PM me if you want to part with one.

  2. #2

    Default

    Have you tried romsavat.exe? It's part of a utility set called Getrom.zip.
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  3. #3

    Default

    Thanks, I've found it, I'll give it a go.
    Looking for: OMTI SMS Scientific Micro Systems 8610 or 8627 ESDI ISA drive controller, May also be branded Core HC, Please PM me if you want to part with one.

  4. #4
    Join Date
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    Default

    If you want to try the really hard way, you can always use debug.exe

    http://www.vcfed.org/forum/showthrea...BIOS-to-a-file

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