Changes

First you need to find the right setting for your chip. The Willem software will do that for you. So open up EPROMS45 program and click on the "Device select" button then select 27C128.

== Then you will get the correct setup for your chip ==

With a little luck the rest of the setting on the board wont need to be change as the "factory settings" works quite well most 27128/27C128. But just in case here is a step by step check:

Step 1: change the correct chip pattern to tell the board that we are using a 27C128 chip.

Better make a quick hardware test:

And you hopefully get a "Hardware Present".