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TAC/SCAN (SEGA/GREMLIN) :.
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(Update 24.
May 2018)
TAC/SCAN (SEGA/GREMLIN 1982)
[ Game
Info | Pictures | Manuals/Datasheets
| Repair/Restore
| ROMs
| Reproductions/Spares
| Mixed
Stuff ]
NEW (17. Apr. 2006)
Missing:
Pictures
of Cocktail, Production
Numbers, Weight
Game
Info
Overview
- Unique Vertical Space Shooter Vector
Game from SEGA/GREMLIN, controlled with a spinner, a Fire button and an
Add-Ship button.
Description
- Tac/Scan was available as a kit for the SEGA Convert-a-Game system.
The kit was designed so that an operator could convert from one game
to another by simply changing artwork, control panels, game cages (and
possibly
the orientation of the monitor) without having to re-wire the cabinet.
All of
this could be done from the front of the cabinet. The game is missing
complety any side art. Also there must have been a cocktail version
planned, though it seems that no one has seen one so far. The gameplay
is kind of unique in all of the three stages. In all stages you control
seven ships located at the bottom of the vertical screen with a spinner
by moving/turning them left and right so changing the flight direction.
In the first stage enemy ships come down from the top and shooting at
you. You are of course able to shoot back and by turning the
spinner/ships left/right to pass the other ships and their shots. Hit
ships are removed from the formation of seven. Occasionally additional
friendly ships appear that you're able to put them into the empty slots
of your format. The second stage is about the same, but the view is
more from behind the own ships. The third stage is pretty impressive,
you're flying through a warped tunnel in trying to avoid hitting the
walls (kind of 3-D) as seen on the cab to the right.
Cabinet
Types - Upright (1982), Cocktail Table? -
one can be
seen on the sales flyer
PCB(s)
- All game
PCBs are located in a card cage, accessible from the front of the
machine. There are five boards, CPU, Sound, XY Timing, XY Control and
the 48k EPROM board with 2716 chips. The CPU Board is unique for each
of the SEGA G80 Vector Games in such that it contains a security chip
which modifies data for a write instruction to RAM and also a specific
Game EPROM. The security algorithm has been hacked and as such CPU
boards from other G80 vector games can be used. The main processor is a
Z80 running at ~4Mhz, ROM is 48k. The sound prozessor is an i8035. For
more information go to the Manuals/Data
Sheets or Repair/Restore
section.
Monitor - The
Monitor is an Electrohome G08-003, a 19" color XY monitor. It is
comprised of a 19" color tube (19VLUP22, the same as a WG6100), an
Input
Clamping Board, the XY Deflection Board, the Deflection Transistors on
a heat sink, the HV Unit and the Neck Board. The G08-003 was known to
be pretty unreliable. However there are known improvements. Also there
are two components which are not easily availabe, one IC on the Input
Clamp PCB and the HV transformer. Both need to be taken from a scrap
G08 unit if they are defective. But compared to other XY games the HV
transformer is
reliable. See the Repair/Restore
section
for the G08 FAQ.
Clones/Bootlegs - not
known
Prototypes
- not
known
Other
Links
»
TAC/SCAN on
K.L.O.V.
( The "Killer" List of Video Games) - www.klov.com
»
TAC/SCAN on Game
Archive - http://www.gamearchive.com/....tac_scan.html
» Upright
Cabinet - [link]
» Monitor
Electrohome G08-001 & G08-003 - [link]
» Cocktail
Cabinet - searching for pictures other than the
flyer...
Manuals/Datasheets/Technical
Info
TAC/SCAN
- Upright
»
Service
and
Operation Manual incl. Schematics - 420-0795
(released)
- 420-0795 (preliminary)
» G08-001
and
G08-003 Monitor
Operations
and Service Manual incl. Schematics - Sega Manual
- Electrohome Preliminary
» Datasheets
for
electronic components - CPU Z80A - CPU i8035 - EPROM2716 - EPROM2708 - Static RAM 2114 - D/A Converter AD561J
- D/A Converter AD7524 - TTL Logic 74LSxx
Repair
Tips
»
Electrohome
G08 FAQ Version 1.1 (7. Oct. 2002) -
http://www.ionpool.net/...G08_FAQ_v1.1.pdf
» SEGA
G80
Hardware Reference (25. Oct. 1978) - http://www.ionpool.net/...G80ref_v12.txt
» The
Sega Color
XY Convert-a-Game System (12. Mar. 2002) - http://www.ionpool.net/...segaxysystem.html
» The
Sega/Gremlin X-Y FAQ version 1.6 written by Mark Jenison
- Sega XY FAQ 1.6
Restore Pages
» not
known
Artwork
» not known
» TAC/SCAN
Set 1 - (22x2716
plus 1x2708) - http://www.ionpool.net/...tacscan_set1_roms.zip
- Readme.txt
»
TAC/SCAN
- Security Free - (15x2716 plus 1x2708) - http://www.ionpool.net/...tacscan_free.zip
- Readme_sec_free.txt
Reproductions/Spares/Improvements
Spares
-
Generally have a look
at the "Link
Collection" section to
find sources. I can help out with single electronic items, if you don't
find them
elsewhere. A
non conclusive List is in the "Electronics
/ Parts"
section.
Reproductions
- I don't know of specific reproductions for this machine. Maybe this
has changed. Have a look in the "Link
Collection" section:
» not
kown
» How the
SEGA security chip was de-crypted - http://www.ionpool.net/...security_hack.txt
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