Euro-Apple Modifications

V. Sullivan

Modification 3 (Part 1)

Processor Schematics

This is a temporary modification, for testing purposes, to allow the use of the 2732 EPROMS included in your kit. Those connections listed as permanent will be used later and should be well done. The temporary connection will be removed later and need not be as carefully done. The complete EPROM modification is presented later. Note that in this section we are dealing with ROM address numbers rather than chip grid location numbers.

Step 1) Cut the foil between pins 20 and 21 on EACH of the six ROM sockets in row F. DO NOT cut the other foil that leads to pin 20.

Step 2) Connect the following jumpers using #30 wire:

Step 3) Connect two 1K Ohm 1/4 Watt resistors as follows: