RE: Space Duel/Gravitar?

> Just for clarity... is the only main difference between SD and Gravitar
> hardware the
> existance of Linear Scaling on Gravitar (not counting that the memory map
> is a bit
> different).
>
That's the biggie. The memory map for Space Duel is significantly
restricted as well (which isn't too hard to get around considering how I
plug my stuff directly into the CPU socket.) The thought of people hacking
scaling circuitry onto Space Duel boards really spooks me though. (I've
seen some... 'er.... "interesting" soldering jobs on the SW/ESB kits. :-)

> My alpha 1 looks to be just like Gravitar with the addition of the
> "sparkle" and X-Y
> flip ability in the VG.
>
> So does it go like this as far as the VG is concerned.....
>
> BattleZone,
> Red Baron First AVG (all basic funtions)
>
> Tempest,SpaceDuel Color!!
>
(Yeah, these two are pretty close, although Space Duel went to the
integrated Vector Address Generator circuit. Chages the stack depth I
think...)

> Gravitar/BW,
> Star Wars Linear Scaling added
>
> Major Havoc Sparkle, XY flip, ColorRAM
>
> I haven't looked at Quantum hardware lately, did they use a new State
> Machine PROM
> to make single instructions out of all the 2-step 8 bit instructions?
>
That I don't know. Anyone?

-Clay
Received on Mon Aug 30 16:34:30 1999