Saturday, 19 July 2014

Gottlieb System 80B CPU

Some pics of my rev2 cpu board for system 80b gottlieb games. This project has been ongoing for the last year and is finally coming to fruition. Everything is working lovely now and the final little niggle was worked out yesterday. I've been testing the operation of it for a while now and i think its pretty bullet proof. One has been running in my Gold Wings for around 6 months now.

Rev 2 Board running in my Gold Wings

Lots of improvements on the original design include:

  • Decent ground anchors
  • Test point pads
  • Leds for common signals and voltages
  • Led for LEON test rom
  • Reduced component count
  • Built in reset board option
  • Usage of modern rams for bookkeeping
  • Improved and simplified cpu reset section
  • Plate through design, socketed ics
  • Molex 0.156" header for 5v input

Rev 3 boards will be finalised shortly and sent off to the manufacturer that i use. Turn around is usually within a few weeks. Deciding at the moment whether to add gold plated edge connectors. I am also thinking about adding a 40 pin ribbon cable attachment for linking up to other driver board replacements. 

Rev 2 board on left , Rev 1 board on right
The above pic shows the first prototype board on the right hand side. Things have moved on a lot since then. I always think its good to have a proper prototype board to experiment on though rather than trying to use a strip board in the first instance. With boards like this it just gets too messy and complicated not to.

I have priced the assembled and tested board at £180 plus postage to your country. Roms can be added on for an additional price or you can use your originals.

The list of 80B games is as follows:

  • Amazon Hunt II
  • Amazon Hunt III
  • Arena
  • Bad Girls
  • Big House
  • Bone Busters Inc.
  • Bounty Hunter
  • Chicago Cubs "Triple Play"
  • Diamond Lady
  • Excalibur
  • Genesis
  • Gold Wings
  • Hollywood Heat
  • Hot Shots
  • Monte Carlo
  • Night Moves
  • Raven
  • Robo-War
  • Rock
  • Rock Encore
  • Spring Break
  • Tag-Team Pinball
  • TX-Sector
  • Victory

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