Sega Model 2, 2A, 2B & 2C
Status Page
Since many people are interested to know the status of Sega Model 2/2A/2B/2C
dumps, here's a listing with all the info I know so far.
Please note the following.....
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- If you would like to donate towards buying one of the remaining undumped Sega Model 2A/2B/2C PCBs, contact me.
- If you want to donate/loan some PCB's, contact me.
-
- To progress further with Model 2 and
2A, we need some _serious_ info on the hardware. Most of this info is
classified and unreleased. If anyone happens to have access to info on
the custom IC's used on Model 2 PCB's please let us know! In particular
we need opcode info on the Fujitsu TGP chips, we don't need info on SHARC
(Model 2B) or TGP4X (Model 2C), just plain old TGP, used on Model 1, 2 &
2A (that's Fujitsu part number MB86233). This chip is a coprocessor
and is used extensively to create the 3D objects. So without emulation of
this chip, there are no 3D graphics :-(
Update - Most of this information has now been
reverse engineered and graphics are showing :-)
Note, Model 1/2x uses the following graphics co-processor IC's....
| Hardware | Sega Part Number | Actual Part Number | Qty |
Model 1 | 315-5571 | Fujitsu MB86233 | 2 |
Model 1 | 315-5572 | Fujitsu MB86233 | 2 |
Model 1 | 315-5573 | Fujitsu MB86233 | 1 |
Model 2 | 315-5673 | Fujitsu MB86234 | 1 |
Model 2 | 315-5677 | Fujitsu MB86234 | 1 |
Model 2 | 315-5678 | Fujitsu MB86234 | 2 |
Model 2 | 315-5679 | Fujitsu MB86234 | 2 |
Model 2 (later) has updated 315-5679B |
Model 2A | 315-5573 | Fujitsu MB86234 | 1 |
Model 2A | 315-5677 | Fujitsu MB86234 | 1 |
Model 2A | 315-5678 | Fujitsu MB86234 | 2 |
Model 2A | 315-5679B | Fujitsu MB86234 | 2 |
Model 2A (later) have some updated revisions.... |
Model 2A | 315-5678A | Fujitsu MB86234 | 2 |
Model 2A | 315-5679C | Fujitsu MB86234 | 2 |
Model 2B | - (none) | Analog Devices ADSP-21062 SHARC | 2 |
Model 2C | - (none) | Analog Devices ADSP-21062 SHARC | 2 |
- Click the thumbnails to see larger pics. Remember that these screenshots are
VERY preliminary, so some of the graphics are missing.
- These games are
emulated by Nebula, and partly emulated by MAME.
Sound has been added to all of the the games that are emulated, though it's not
perfect and requires more CPU power than currently available PC's have to offer
to play at full speed. It's estimated that the minimum CPU required to
play the "playable" games is a P4 3GHz or faster without sound. With
sound enabled, you would need a dual-core processor at 3GHz greater (50GHz recommended),
though with a Pentium D 3.6GHz, it's very playable in Nebula, but not too fast in MAME due to lack of CPU power.
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Status |
D?
GOOD
ND
BAD |
Dumped, but either untested in the
emulator, or it's unknown if the set is good or bad due to
emulation related problems.
Dumped and OK
Not Dumped... yet ;-)
Partially Dumped BUT BAD (hehe,
not dumped by me though! Needs to be redumped because
some ROMs are badly dumped. I.E. We need to buy or loan the
PCB or ROMs again.) |
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M O D E L 2
M O D E L 2A-CRX
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General Comments: All dumps good, 3D working but emulation of the 3D Co-Processors is on-going. |
|
Game Name |
Status |
Comments |
Emulation Screenshots |
|
Model 2A main board ROMs (surface mounted) |
GOOD |
The surface mounted ROMs are now dumped (by me :-)
They contain TGP related data tables. The smt ROMs are located on the CPU board and
are labelled....
OPR-14742A \
OPR-14743A / Linked to 315-5674
OPR-14744 \
OPR-14745 / Linked to 315-5679B
OPR-14746 \
OPR-14747 / Linked to 315-5679B
There's also some surface mounted ROMs on the video board. These are
labelled....
MPR-16310
MPR-16311
MPR-16312
and are linked to 315-5645 |
N/A |
|
Dead or Alive |
GOOD |
Working OK, playable
Uses a security
board (Sega part #838-12927). It's a small PCB containing some
logic IC's, RAM chip and some custom Sega IC's on the bottom. It appears this
board creates a lookup table, but is mostly unused according to the main program
code.
Here's the IC listing.
Version exists for Sega Model 2A & 2B. This same ROMset can be used on Model 2A
and 2B boards by simply putting the ROMs into their correct places. However the
PROGRAM ROMs are different. Both 2A and 2B versions are dumped. |
Same as the 2B version |
|
Dynamite Cop |
GOOD |
Versions are available for 2A, 2B and 2C. Working OK, playable |
Same as the 2B version
|
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Manx TT |
GOOD |
Working OK, playable |
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| Moto Raid |
GOOD |
Working OK, playable |
|
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Pilot Kids |
GOOD |
Working OK, playable |
Same as the 2B version |
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Sega Rally Championship |
GOOD |
Working OK, playable |
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|
Sega Rally Pro Drivin' |
GOOD |
This is a hack ROM upgrade for Sega Rally boards,
comprising of 2 EPROMs and a plug in pack encased in red epoxy (probably
containing a PIC like the Daytona Maxx hack).
This is now emulated, the protection was fairly weak :-)
Of course, it's just like Sega Rally, so it's working OK, playable |
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Sky Target |
GOOD |
Working OK, playable |
|
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Virtua Cop 2 |
GOOD |
Working OK, playable |
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Virtua Fighter 2 |
GOOD |
Working OK, playable
Original version plus revisions A & B dumped. |
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| Zero Gunner |
GOOD |
Working OK, playable |
Same as the 2B version |
M O D E L 2B-CRX
|
General Comments: All the games dumped are close to perfect. |
|
Game Name |
Status |
Comments |
Emulation Screenshots |
| Dead Or
Alive |
GOOD |
Working OK, playable |
 |
|
Dynamite Baseball |
GOOD |
Working OK, playable |
|
|
Dynamite Baseball 97 |
GOOD |
Working OK, playable |
  |
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Dynamite Cop |
GOOD |
Working OK, playable |
 |
| Fighting
Vipers |
GOOD |
Working OK, playable |
 |
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Gun Blade NY |
GOOD |
Working OK, playable |
 |
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Indy 500 |
GOOD |
Working OK, playable |
 |
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Last Bronx Tokyo Bangaichi |
GOOD |
Working OK, playable |
 |
|
Over Rev |
GOOD |
Made by Jaleco in 1997, seems VERY rare.
ROMset secured from a very old archive from a friend who dumped it. We need a
redump of the sound ROMs because they're dumped at half size. Unfortunately the
PCB is not available now. Game works OK though.
Update: I got hold of a redump and the dump is now good. Working OK, playable |
 |
|
Pilot Kids |
GOOD |
Working OK, playable |
 |
| Rail
Chase 2 |
GOOD |
Working OK, playable |
|
Sonic
Championship
Sonic The Fighters |
GOOD
GOOD |
Working OK, playable |
|
| Super GT
24H |
GOOD |
Working OK, playable |
 |
| Virtua
Striker |
GOOD |
Working OK, playable |
 |
| Virtual
On - Cyber Troopers |
GOOD |
Working OK, playable |
 |
| Zero
Gunner |
GOOD |
Working OK, playable |
 |
M O D E L 2C-CRX
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General Comments: All the games dumped are close to perfect. |
|
Game Name |
Status |
Comments |
Emulation Screenshots |
|
Behind Enemy Lines |
GOOD |
Working OK, playable |
 |
|
Dynamite Cop |
GOOD |
Versions are available for 2A, 2B and *possibly* 2C. 2A and
2B versions are dumped.
Update: I've recently discovered that there was a 2C version. However, almost
all (if not all) of them were converted to House Of The Dead because that game
makes more money (and arcade games are ALL about making money, remember)
Another update: We found a 2C Dynamite Cop. Dumped! Working OK, playable |
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| House Of
The Dead, The |
GOOD |
Working OK, playable |
 
 |
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Power Sled |
ND |
Send me a PCB or ROMset so I can dump it! |
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Sega Ski Super G |
GOOD |
Working OK, playable |
 |
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Sega Touring Car Championship |
GOOD |
Working OK, playable |
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Sega Water Ski |
GOOD |
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Top Skater |
GOOD |
Working OK, playable |
 
 |
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Wave Runner |
GOOD |
Working OK, playable |
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Updates will follow as I find out more......
If you want to see more games here, please consider
donating.
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