Sega Multigame (and cheats)

Ok, software patching is done!

Star Trek, Zektor, Tac/Scan, Eliminator, and Space Fury now all play from a
single control panel without any additional hardware required.

I stayed with the Star Trek control panel as the "standard". I patched
Star Trek to reverse the Impulse/Phaser buttons, so that all games use the
same "thrust" and "fire" buttons.

Star Trek Control Panel: Warp Photon Impulse Fire
---------------------------------------------------------
              Star Trek= warp photon impulse fire
               Tac/Scan= -- -- add ship fire
                 Zektor= -- -- thrust fire
             Space Fury= left right thrust fire
             Eliminator= left right thrust fire

(You can physically swap the impulse and phaser buttons on the control
panel so that the labels match up. If you want to support 2player
Eliminator you can do so by adding four more buttons and cabling them over
to the CPU board as normal.)

In the process of patching Star Trek I needed to patch the high-score
initial routine. Problem is, Star Trek has "real" scores on power-up so
you actually have to play for a while to get on the high-score list. Since
the controls on the emulator are pretty twitchy I was having a tough time
getting a high score. I ended up making a couple of "modifications"...
Namely I made it so that I had unlimited photon torpedo's and my shield
would only decrease due to collisions, not just enemy fire. I can post the
hacked ROMs if anyone is interested. (and offsets and patches, Mike. ;-)

-Clay

P.S. Al-- that spinner control bug is the weirdest thing I've seen in a
long time. It SHOULD WORK exactly as is. I tried everthing I could think
of-- reversing bit order, shifting the count, changing direction bits.
Weird. Hmmmm. One thing I didn't try-- complement the data word. Better
give that a shot... ;-)

Clayton N. Cowgill Engineering Manager
_______________________________________________________________________
/\ Diamond Multimedia Systems, Inc. clay@supra.com
\/ Communications Division http://www.supra.com/
Received on Thu Oct 23 10:20:56 1997