Looking for a Sega chip

[Belike]

I'm looking for a Sega 315-5015 chip for my Super Locomotive pcb.
If anybody knows any source for this, please let me know.

[PaulSwan]

If you know or can find out what other PCB's it was used on then you can ask for those too

Paul.
 

[Belike]

It is in the "Z80 based" section on this site:
http://www.system16.com/hardware.php?id=688&gid=3243#3243
Anybody have some of these boards to check if it is also there?

[Vnera]

i just love the Z80 its a awesome processor! its also in the gameboy and the ti graphical calculators but thats of topic.
I think you best bet is to find a mooncresta pcb those seem to float allot. and even for cheap price's

[PaulSwan]

I have a vague memory that there is a common 8-bit (Z80) platform "Sega System 8" that had Wonderboy and a few other titles on it. If it's on or nearly on that platform then it may have it.

Can you post a good close up picture of your PCB?

Paul.

[Belike]

Atm. I only have this, it is at my Old Friend's workshop:

[PaulSwan]

Yes, that's reminding me of Sega System 8 based games around that era. If you're lucky,that custom may have been used on other PCB's.

Paul.

[Laschek]

Which one on the picture is it? It might be possible to burn a new one with the data from the Mame Roms.

[Belike]

That one in the middle of that beautiful red circle.

[PaulSwan]

Is that an encrypted Z80, like the one the used on other 8-bit sega games?

Look at this file in the MAME source...

http://mamedev.org/source/src/mame/machine/segacrpt.c.html

103    List of encrypted games currently known:
  104 
  105   CPU Part #         Game                   Comments
  106    -?      Buck Rogers            unencrypted version available
  107    315-5010      Pengo                  unencrypted version available
  108    315-5013      Super Zaxxon           used Zaxxon for known plaintext attack
  109    -?      Super Locomotive
...
  123    315-5069      Star Force             game by Tehkan; same key as Super Locomotive
  124    -?      Pinball Action         game by Tehkan; also has a simple bitswap on top
...


It looks like it might be the encrypted Z80 However, the table above suggests it might be the same as Star Force. And there may be enough info to consider make an unencrypted ROM set to use with a standard Z80.

Paul.