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Help identifying ROM chips

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Hi all,


I found a set of ROM chips - I think they came from a Mac Plus - I vaguely remember (I was probably 5-6 years old) my Dad pulling some ROM chips out and doing some sort of upgrade to our Plus. I know he did upgrade to 2.5mb of RAM, not sure what else. I've also included a photo of the chips currently in the Plus.


Quick search on these part numbers didn't turn up much.


I recently picked up a 512k, was wondering if they are "Plus" roms, if I could upgrade it potentially.




A photo of the current chips in the Mac Plus



Edited by erichelgeson
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