Dragon's Lair Fans - Arcade Lifestyle

General Chat => 'Business' Area : Buy/Sell/Trade => Topic started by: Belike on September 22, 2011, 06:21:44 PM

Title: Looking for a Sega chip
Post by: Belike on September 22, 2011, 06:21:44 PM: 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. ;)
Title: Re: Looking for a Sega chip
Post by: PaulSwan on September 22, 2011, 07:18:40 PM: If you know or can find out what other PCB's it was used on then you can ask for those too :)

Paul.
Title: Re: Looking for a Sega chip
Post by: Belike on September 22, 2011, 08:41:26 PM: 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?
Title: Re: Looking for a Sega chip
Post by: Vnera on September 22, 2011, 09:03:05 PM: 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
Title: Re: Looking for a Sega chip
Post by: PaulSwan on September 22, 2011, 09:10:02 PM: 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.
Title: Re: Looking for a Sega chip
Post by: Belike on September 22, 2011, 09:14:50 PM: Atm. I only have this, it is at my Old Friend's workshop:
(https://lh6.googleusercontent.com/_-UA8BV99Des/TcwwqEelXkI/AAAAAAAADXA/HgiG9eggNkc/s800/eger%20konami%20023.jpg)
Title: Re: Looking for a Sega chip
Post by: PaulSwan on September 22, 2011, 11:45:40 PM: 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.
Title: Re: Looking for a Sega chip
Post by: Laschek on September 23, 2011, 09:44:46 AM: Which one on the picture is it? It might be possible to burn a new one with the data from the Mame Roms.
Title: Re: Looking for a Sega chip
Post by: Belike on September 23, 2011, 02:38:35 PM: That one in the middle of that beautiful red circle. ;D
(https://lh4.googleusercontent.com/-J9SJyBHzKQ4/Tnx9R3swHEI/AAAAAAAAEtY/SwBmr6du_KQ/eger%252520konami%252520023.jpg)
Title: Re: Looking for a Sega chip
Post by: PaulSwan on September 23, 2011, 05:39:44 PM: 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 (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.