MOS8701 Clock Generator Replacement Kit

Overview

We set out to design a drop in replacement for the MOS8701 clock chip used on the C64 and C128. The goal was a replacement that just drops in and works and will fit in the tight confines of a C128. The result meets those goals. It senses the state of the /PAL input and set the clock chip to the proper mode for an NTSC or PAL computer. i.e. to match your crystal frequency. It does not convert a NTSC to PAL computer or vice versa.

This kit requires surface mount soldering of components as small as 0603 package size. You will also need to build a soldering fixture out of some single sided perf board. Please watch the video in the video tab which covers construction.

NOTE: We are also offering assembled and tested boards. These are hand assembled and it might take a few days to get your board done, please be patient.

What is in the kit?

Description	Quantity
PCB, 1.6mm FR4, HASL	1
ICS-525 clock chip	1
33ohm resistor, 0603	2
10K resistor, 0603	1
0.1uf capacitor, 0603	2
Single gate inverter, SOT23	1
Pre formed 'Z-bent' pin set	2

 

Instruction Manual

Simple instruction manual describing how to build the kit and how to use the device.

Click HERE for manual