Difference between revisions of "System 18"

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A [[JAMMA]] compatible arcade platform by Sega, derived from their [[System 16]] PCB. It's video runs at 57.23hz.
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A [[JAMMA]] compatible arcade platform by Sega, derived from their [[System 16]] PCB. It's video runs at 57.23hz according to readings form the board by the [[MAME]] team.
  
== FD1094/FD1089 Suicide battery ==
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== Suicide battery ==
  
Some of these games have a processor labeled FD1094 or FD1089, these are 68000 processor cores with a battery and encryption keys that are used to decrypt the game at run-time. Unfortunately these batteries eventually die out and the game is rendered useless.  
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Please refer to the [[FD1094 and FD1089 suicide battery]] page for more information on this issue.
  
There are two ways of preventing this form happening. You can replace the battery inside of these, and keep doing so every 5 years in order to keep them as original as possible or you can buy/build a kit to replace the encrypted ROMs with unencrypted ones and change the FD processor for a standard 68000 one. Please refer to the external links section for information on these.
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== XRGB-2 Specific Settings ==
  
== XRGB-2 Specific Settings ==
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Video is up scanned without problems, however the resulting vertical and horizontal frequencies are not standard TV ones and it might not work on some TVs that can't sync with such signals.
  
Doesn't work
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The frequency generated by the XRGB-2 when using this PCB is 57.4Hz and it has been verified as working on CRT monitors.
  
 
== XRGB-3 Specific Settings ==
 
== XRGB-3 Specific Settings ==
  
Only works in B0 mode. B1 mode mode behaves just like the XRGB-2, monitor can't sync with XRGB-3 when using this board.
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All this information applies to the GAME IN port only, using RGB21. Works without problems in B0 mode, however due to the uncommon sync frequency used by System 18 games, the XRGB-3 generates the appropriate up scanned signal at 57.4Hz which might be incompatible with some displays since the standard TV frequency is 59.94Hz. It has been verified as working on a CRT monitor.
 
 
  
 
== Games tested ==
 
== Games tested ==
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* [http://www.system16.com/hardware.php?id=702 System 18 page]
 
* [http://www.system16.com/hardware.php?id=702 System 18 page]
* [http://www.segaresurrection.com/ Sega Resurrection] A site that sells kits to revive dead Sega boards
 
* [http://www.arcadecollecting.com/dead/dead.html The Dead Battery Society] Site with information on suicide arcade games
 
* [http://www.jamma-nation-x.com/jammax/tutorials.html JAMMA Nation X] has a tutorial to change an FD processor battery, check under Other->Misc.
 
* [http://cgfm2.emuviews.com/fdconv.php Charles MacDonald FD1094 Game Conversion] Information on how to decrypt these games by yourself
 
  
 
[[Category: Arcade PCBs]]
 
[[Category: Arcade PCBs]]

Latest revision as of 19:43, 17 February 2010

A JAMMA compatible arcade platform by Sega, derived from their System 16 PCB. It's video runs at 57.23hz according to readings form the board by the MAME team.

Suicide battery

Please refer to the FD1094 and FD1089 suicide battery page for more information on this issue.

XRGB-2 Specific Settings

Video is up scanned without problems, however the resulting vertical and horizontal frequencies are not standard TV ones and it might not work on some TVs that can't sync with such signals.

The frequency generated by the XRGB-2 when using this PCB is 57.4Hz and it has been verified as working on CRT monitors.

XRGB-3 Specific Settings

All this information applies to the GAME IN port only, using RGB21. Works without problems in B0 mode, however due to the uncommon sync frequency used by System 18 games, the XRGB-3 generates the appropriate up scanned signal at 57.4Hz which might be incompatible with some displays since the standard TV frequency is 59.94Hz. It has been verified as working on a CRT monitor.

Games tested

  • Alien Storm

External Links