The Z80 was used in Neo Geo MVS games up until a
couple years ago. It is
amazing what they accomplished with that platform after the first few
years.
Z80 is just the sound processor. The main processor is a 68000.
This is what made the Dreamcast such a great system
for Arcade ports. You
basically had the port done when you released the game in the arcade.
Name any other console with that many *good* arcade ports!
Not only dreamcast, but almost all videogames derived arcade machines.
- Namco has a boardset based on Playstation 1
- Konami has a boardset based on Playstation 2 (and some bemani machines
uses the entire PS2 inside!
- The Chiriro hardware is xbox based (take a look at outrun 2006 on
arcade and xbox)
- Some machines uses N64/Gamecube based hardware
- Saturn had a boardset called ST-V, but it was cartridge based
www.system16.com has tons of info on all kinds of boards. You'll loose 2
or 3 hours of your life, but very pleasant ones :o)