18 Jul
2004
18 Jul
'04
7:42 a.m.
Btw, do you (or anyone) have the pinout for 4564
DRAM's? I'm wondering
if they are in backwards (as noted previously, someone "worked" on this
unit) - 16 pins, showing +5 on pin 8 and Gnd on pin 16 - backward to
That is the conventioanl pinout for 64K DRAMs (like the 4164). The old
3-rail 16K ones (4116, etc) had -5V on pin 1, +12V on pin 8, +5V on pin
9 and ground on pin 16 (this is burnt into my brain).
I don't think your RAM is in backwards. Certainly don't turn it round yet!
-tony