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Emax

Index last updated: 2026-04-28 23:23 UTC

Message

Re: Memory Upgrades

2009-11-26 by Everett

Cool, looks like we're in business then.  Another person has verified that this works.  If you upload the bin files you have created to the group maybe someone can crack the code by comparing the different files.  I have already put one 8MB stereo file in there.  I assume yours would be almost identical except for some calibration data.

Everett

--- In emax@...m, "dwv1957" <dwv1957@...> wrote:
>
> Just a note to let everyone know, you can upgrade the memory of your EmaxII by changing the EEprom.
> I took the eeprom out of an 8 meg emaxII read it to a .bin file, and then burned the image to a new eeprom, then I fully populated the memory expansion board in my 4 meg machine and plugged in the new eeprom, and everything works perfectly. I also did images of 4mb and 6mb emaxII's and tested them with different configurations and everything seems to be working fine.
> This will only work with 2 meg emax's, the original 1 meg emax's use different PALs, I could probably upgrade the 1 meg machines, but I would need the main board and expansion board to do it.
> The biggest problem you will have is finding enough 44256 memory chips to populate the expansion board with.
> I can supply the burned eeproms for $10 +shipping, if your not comfortable desoldering the old eeprom, I can do it for you, I don't need the whole machine, just the main board and expansion board, if interested, contact me off list.
> 
> Dave
>

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