Sunday, 11 April 2021

Namco '00xx' reproduction

Here's another custom IC I recently reproduced.It's the Namco '00xx', the video RAM addresser (basically the same as Pacman's "284" VRAM Addresser) used on :

  • Dig Dug
  • Galaga
  • Super Pac-Man

Original custom IC come in  DIP28 600 mil package with stamped number of four digits (but the 3rd and 4th digits can vary because they actually refers to the lot/date production hence the first two digits really matters) :

I made a TTL thru-hole prototype board :

It worked fine on first try.Here's successful testing on a Galaga PCB :

Next step will be a surface mounted TTL or CPLD based version, stay tuned!


  1. I see that Galaga has been set to fully working in MAME so the work you've done on these chips did it help to do that ?

  2. I don't think it was thank to my work.