Help with Apple2 clone "Orange Peel"

From: Tony Duell <ard_at_p850ug1.demon.co.uk>
Date: Sun Jul 18 14:42:01 2004

> 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
Received on Sun Jul 18 2004 - 14:42:01 BST