I may have caused some confusion, sorry. Until I check the machine, which is in storage, I'm not certain about what's on the board, other than it's definitely not an EEPROM. A write once/read many PROM would be my guess.
FWIW, I've previously used a burning service for EPROMs and plan on doing so again. My electronics bench is configured for things like the 12AX7/ECC83, not digital stuff.
I will move ahead, very slowly. The 32 MB RAM limitation I appear to be squarely up against rules any sort of useful Linux out. The OS will be Windows 98 (phooey!) and I already have DOS utilities, which can deal with the Y2K and 586 configuration matters. Autoexec.bat or (possibly) config.sys will run that code, before windoze thunks out of 16 bit real mode into 32 bit protected mode.
16 MB 30 pin SIMM "slugs" are available, but I can't even begin to guess if the chipset can be tweaked into working with them. It would seem the number of address lines hasn't changed, as 30 pins is 30 pins. The SIMMs are arranged in 2X 4 "slug" banks, with each SIMM making up 1 byte of any given 32 bit word.
Eli D.
________________________________ From: Felix Held felix-coreboot@felixheld.de Sent: Monday, November 11, 2019 2:29 AM To: Eli Duttman eduttman@hotmail.com Cc: coreboot@coreboot.org coreboot@coreboot.org Subject: Re: [coreboot] Re: Howdy!
Hi!
Since you mentioned that the system is using an EPROM, what type is it? Maybe there's a way to emulate it
If it's a parallel eeprom/nor flash, the memsim2 might be worth a look. Beware though that if the mainboard has +12V connected to the programming voltage pin or another unused pin of the socket, that'll fry the memsim2, so build a small adapter that doesn't connect those two pins, but connects the rest. There's also an open source tool to push the firmware image to the emulator; haven't tried the vendor tool.
Regards Felix
-- Felix Held c/o cyberkombinat23 Steinstraße 23 76133 Karlsruhe Germany
mail@felixheld.de
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