mcp
Posts: 5
Joined: Thu Dec 28, 2017 11:36 am

IRION (Exerion) PCB found - possibly Exerion PROTOTYPE ?

Thu Dec 28, 2017 1:40 pm

I have found a PCB with an Exerion Clone (?) or Prototype (?). Game title is IRION. See the attached pictures.
Anyone seen this before ?

The PCB looks different to the 2 PCBs I know of, the Jaleco 1-board and the 2-board versions.
The PCB seems to be limited in comparison to the Jaleco boards.

Gameplay is only different by the not moving background. Otherwise the game seems to be the same.
It shows "---S 1983 11---" instead of the "(C) 1983 Jaleco" string.

I have not seen this to be emulated in MAME in version 0.192.
Attachments
IMG_4387(s).jpg
IMG_4387(s).jpg (362.5 KiB) Viewed 2193 times
IMG_4384(s).jpg
IMG_4384(s).jpg (191.08 KiB) Viewed 2193 times
IMG_4381(s).jpg
IMG_4381(s).jpg (218.57 KiB) Viewed 2193 times
IMG_4376(s).jpg
IMG_4376(s).jpg (178.52 KiB) Viewed 2193 times

User avatar
Robert
Posts: 62
Joined: Thu Nov 06, 2014 12:44 pm
Location: Land of Oz
Contact: Website

Re: IRION (Exerion) PCB found - possibly Exerion PROTOTYPE ?

Sat Dec 30, 2017 5:12 am

I've notified the dumping union. They may contact you if there's interest.

User avatar
Tafoid
Posts: 128
Joined: Thu Nov 06, 2014 12:50 pm
Location: Vermont USA
Contact: Website

Re: IRION (Exerion) PCB found - possibly Exerion PROTOTYPE ?

Sun Dec 31, 2017 3:15 pm

Of course, if you have the means, dump what chips you can and compare with current MAME is possible. There is always chance it is more than a simple titlescreen hack bootleg.

User avatar
Robert
Posts: 62
Joined: Thu Nov 06, 2014 12:44 pm
Location: Land of Oz
Contact: Website

Re: IRION (Exerion) PCB found - possibly Exerion PROTOTYPE ?

Sun Dec 31, 2017 10:56 pm

There is interest, but you'll have to dump the roms if you're able.

mcp
Posts: 5
Joined: Thu Dec 28, 2017 11:36 am

Re: IRION (Exerion) PCB found - possibly Exerion PROTOTYPE ?

Fri Jan 05, 2018 3:58 pm

I will dump the roms tonight.

mcp
Posts: 5
Joined: Thu Dec 28, 2017 11:36 am

Re: IRION (Exerion) PCB found - possibly Exerion PROTOTYPE ?

Fri Jan 05, 2018 8:41 pm

I have dumped all 6 eproms.
All 6 are of type 2764.
I have named them simply 1.bin ... 6.bin.
See attached zip.

Using "Hamster's Online Rom identification" tool I have found that only 6.bin is associated with a known rom, see the following table:

game desc rom name region offset
exeriont Exerion (Taito) exerion.11 gfx2 0
exerionb Exerion (bootleg) exerion.11 gfx2 0
exerion Exerion exerion.11 gfx2 0

All other roms ( 1.bin - 5.bin ) are not to be identified by using Hamster's tool.

User avatar
Tafoid
Posts: 128
Joined: Thu Nov 06, 2014 12:50 pm
Location: Vermont USA
Contact: Website

Re: IRION (Exerion) PCB found - possibly Exerion PROTOTYPE ?

Sat Jan 06, 2018 11:51 pm

I've forwarded the roms to the Dev Team. If there are more question about it, someone will likely reply otherwise expect to see it added to MAME soon.

Thanks for your effort!
Tafoid

User avatar
Robert
Posts: 62
Joined: Thu Nov 06, 2014 12:44 pm
Location: Land of Oz
Contact: Website

Re: IRION (Exerion) PCB found - possibly Exerion PROTOTYPE ?

Thu Jan 18, 2018 12:57 am

I've run some checks, this is how it pans out...

1.BIN =~ GFX1
2.BIN =~ CPU @0000
3.BIN =~ CPU @2000
4.BIN =~ CPU @4000
5.BIN =~ GFX2 @0000
6.BIN = GFX2 @2000

When compared to other Exerion sets, we are missing GFX3, SUBCPU, and 5 proms. Also the 2nd Z80 is missing off the board.

This, I think, means that there will be no background graphics. Also, the soundlatch will work in a different way.

Your screenshot shows stars. Exerion doesn't have stars.

This isn't a simple drop-in bootleg, it requires further work...

mcp
Posts: 5
Joined: Thu Dec 28, 2017 11:36 am

Re: IRION (Exerion) PCB found - possibly Exerion PROTOTYPE ?

Sun Jan 21, 2018 1:23 pm

Robert,
if you need more information, e.g. high-res pictures of the PCB or else, let me know.

Haze
Posts: 6
Joined: Thu Nov 06, 2014 1:16 pm

Re: IRION (Exerion) PCB found - possibly Exerion PROTOTYPE ?

Tue Jan 23, 2018 3:04 am

Is it possible a conversion to something closer to Galaxian hardware? (hence the more basic starfield, lack of background, lack of 2nd CPU etc.)

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