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Can anyone ID this RAM?


It says “Mac Memory Inc.” “Max Plus” 1986 on the back. Is it for a Mac Plus? SE? Something else? Helping ID it for a friend. Thank you. F9F10D37-D96B-433D-B555-7231D6A9C5DB.png


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Well-known member
It looks like it has 32, 256k x 1-Bit DRAMs, which would make it a 1 MB SIMM. What’s unclear to me is how the 32 DRAMs are muxed into a 30-pin SIMM, which only has 8 data bits. Maybe those other two chips do some sort of chip select decoding based on address? Not sure. Either way, I think you’d need two of them, since the Plus has a 16-but data bus.