|The Sega G-80
Multigame is a hardware/software
combination that allows all the released Sega
Vector Games (Star Trek, Eliminator, Space Fury,
Tac/Scan, and Zektor) to be played from a single
Multigame presents an on-screen menu (pictured at
right) that allows selection of any game as well
as test functions. All games have been re-mapped
to allow play from a Star Trek control panel in
single-player mode. Original versions of each
game are also included.
The Multigame upgrade consists
of a daughtercard that connects to the CPU board
and a replacement PROM (also on the CPU board).
Audio switching is not
automatic at the moment. That will be handled by
a separate audio mux board. Someday we'll
(hopefully) have an all-in-one sound card.
(This means that currently
you'll need three sound cards to hear sound for
all five games. Star Trek and Tac/Scan share the
same sound card; Zektor and Eliminator can use
the same sound card; and Space Fury has its own
sound board.) All games will play without all the
sound cards-- things just won't always sound
(Title screen and Menu page for
the Multigame Menu System.)
Daughtercard and Security Chip bypass plug. The
Z-80 from the CPU board is used on the
The Multigame Daughtercard and Security Plug
install onto a Sega Vector game CPU board. Once
installed the orginal EPROM board can be removed.
(Saving power and reducing heat-related stress on
games are contained on a single 27C040 EPROM
(27C080 is also supported). Two latches are
available for bank selection and to support the
audio switcher and video adjustment add-ons.
Testing new software for the
G-80 is greatly simplified since an EPROM
emulator can be plugged into the EPROM socket on
All the games will play from a
Star Trek control panel. "System Reset"
and "Menu" switches may be wired to the
daughtercard and placed where desired on the
game. (System Reset is optional and included for
The spinner interface is a replacement for the
Sega "Single Player Control Panel
Interface" that connects to the spinner knob
and control panel buttons on Star Trek, Zektor,
and Tac/Scan. These are useful for making your
own control panels and replacing missing parts
from existing games.
These are once
again available in very limited quantites! ($35
The Spinner Interface is shown
with a .156" header across the top. It's
shipped with this section empty so it can be used
with either the Mate-n-Lock 3x5 connector on
original games, or wired into a custom cabinet
using a header or by soldering wires to the
The Sega Multigame is $99 plus $7
shipping in the US. International shipping charges are
instructions in .PDF format are now available. Click HERE.
© 1999, Clayton Cowgill firstname.lastname@example.org