• Hello, Guest! Welcome back, and be sure to check out this post for more info about the recent service interruption and migration.

Can anyone ID this RAM?

Swabbie

Member
63D80F90-A2DC-4327-95D2-27697651815F.jpeg
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
 

Attachments

  • A7ABD38A-0F20-4DE1-B550-D78197E5162E.jpeg
    A7ABD38A-0F20-4DE1-B550-D78197E5162E.jpeg
    148.8 KB · Views: 3

mdeverhart

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.
 
Top