Urgent Help with Robotron Error!

[Jedi Master Matt]

Greetings,

I just upgraded my version of MAME to .92 and have encountered an error when trying to run Robotron and it's something I haven't seen before.  Hopefully one of you have an idea for a solution... I've deleted all my config and controller files in hope of solving it and it seems to be isolated to just Robotron.

Here's the error:

error: invalid value for paddle_device: mouse1
ignoring line
error: invalid value for dial_device: mouse 1
ignoring line
error: invalid value for trackball_device: mouse 1
ignoring line
decoder.4 not found
decoder.6 not found
error: required files are missing, the game cannot be run

So far in my testing, all the other mouse/spinner/trackball games are working just fine.   My cabinet also has MAME.86 installed and Robotron works just fine.

Thanks in advance for any assitance!

[Jedi Master Matt]

I've done a bit more testing and the problem is more widespread than I first thought... it's all of the Williams games (Joust, Stargate, etc.).

[Jedi Master Matt]

Ok.. I've made a bit more progress.   The issue with the mouse was related to me using an older .ini file.   Fixed it by making a new one.

The other issue is potentially bigger.   It's related to the decoder not being found.   My MAME set for these games didn't have this decoder in the roms.   

From what I've read so far, .92 had  lot of rom changes and a lot of decoders being added.   

Does anyone know what ROMS were changed with decoders?

[dabone]

All of the classic Williams game had proms added.

Either update your roms, or go back to the earlier version of mame.


Later,
dabone

[Jedi Master Matt]

Dabone - that's what I suspected.   

I pieced Defender, Stargate, and Joust back together.   Does anyone know what other classic Williams games were effected?

[Thenasty]

MAWS is a friend


Williams 6809 system

    driver by Michael Soderstrom, Marc LaFontaine, Aaron Giles

   Games supported:
      * Defender
      * Mayday
      * Colony 7
      * Stargate
      * Robotron
      * Joust
      * Bubbles
      * Splat!
      * Sinistar
      * PlayBall!
      * Blaster
      * Mystic Marathon
      * Turkey Shoot
      * Inferno
      * Joust 2
      * Lotto Fun

   video-decoder proms added for Defender,Stargate,Robotron,Joust,Sinistar,
   Bubbles, etc. by HIGHWAYMAN, all decoder proms are 512x8.
   defender original pcb's used a single prom(decoder1).
   newer defender pcb's used 2 proms(decoder2,decoder3) this was to allow
   video inversion for the coctail table, decoders 1 & 2 are the same code.
   white was first romset, then green/blue the only difference was the chips used,
   the final version was red, only red can run in a coctail table.
   (red also has *much* improved enemy AI and is harder to play)
   Colony7 uses a different chip for decoder2(cs10), but decoder3 is the same.
   early stargate pcb's used decoder4, and decoder5.
   newer stargate pcb's and the other games on that hardware used decoder4 and decoder6
   this was probably just to fix a minor bug in decoder5.
   Blaster uses decoder4 and decoder6 and 2 other proms.
   if i could find more proms i would clean this up into a table - maybe later.