CDTV Clockport

Introduction

This is a simple project to expand the A500 and CDTV with an A1200 style clockport so that upto 2 devices can be used at once. It is intended that this design be available as both a kit and a ready made item.

Features

Designed to be compatible with the Kato developments board prototype and existing A1200 software.

A simple design only using 7400 series TTL logic chips.

Allows the use of 2 clockport devices.

A public design. Schematics and PCB layouts will be available

Technical notes
The clockports will be at these addresses:
$D80001 upwards &$D84001 upwards,

You fit this adaptor by removing the MC68000 CPU from it's socket, inserting this board, then re-inserting the MC68000. I am currently researching compatibility with A500 CPU upgrades that plug into the CPU slot.

Current Status

On hold.

Schematic

Exported from my CAD tool today, click the thumbnail to enlarge.