The Apple Lisa is a quite rare collector’s item today. So if you hold one in your hands, you better take some high resolution pictures of the boards. Here they are:
CPU Board
I/O Board
Memory Board
The Apple Lisa is a quite rare collector’s item today. So if you hold one in your hands, you better take some high resolution pictures of the boards. Here they are:
How much RAM is on that memory board? I saw it had “High byte” and “low byte” printed on it too.
512kB on this board.
The NEC D4164C-3 is a 64kbitx1 DRAM chip.
It was a 16-bit machine. It looks like they had a parity bit per byte, so 9 chips for each byte (18 bits total for each word, 16 bits of data, 2 bits of parity ).
Yup, looks just like mine!
http://oldcomputers.net/lisa.html
I have two Lisas: One is not working, the other one runs Mac XL, the Mac emulator for the Lisa.
I also own the complete manual set.