2 Jan
2013
2 Jan
'13
6:10 p.m.
If do you switch back to an Apple-made memory board, I
believe you'll
need the original ROMs. I wouldn't recommend going all the way back
to a 128K board, though. SOS barely fits in that amount of memory -
stick to 256K. Also, you'll need to make sure you get a memory board
that matches your system. Since it's a III+, the original 128K 12V
board won't work in it.
And why would he do it with such a great memory board he has? It is just
a matter of finding one (socketed) memory chip! :oD
You can do a simple troubleshooting to discover which chip is defective
without having 4164s there:
Number chips from 1 to 16:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Now swap the first and last (1 and 16) and run the memory test
No problems? swap 2 and 15, and run the memory test
No problems, swap 3 and 14 and so on
When you find that the last swap changed the position of memory error,
you know that one of these two chips has problems :o) Since you said you
have a //e, you can find 4164 as the main board memories of the //e.