Caius

Feb 022016
 

In the past days we received some new PAL dumps. For now we mark them as untested since we yet have no feedback on them.Most of dumps came from ‘coolmod’.He sent in dumps from a Gaiapolis PCB (two boards PCB revision), this is the only which has been tested and working in a GAL16V8.Then, he submitted dumps from various boards :

  • Golden Tee 3D Golf
  • Karate Tournament
  • Hat Trick Hero ’93

These are untested for now (the ones from Hat Trick Hero ’93 are still in native PAL16L8 format) as well as the dumps we got from Smitdogg on Dumping Union from a laser disk game called Mahjong #4 Shabon-Dama.Thanks to the dumpers for their contribution.

 

 Posted by at 7:36 pm
Jan 282016
 

Some days ago I had on the bench this Wolf Fang: Kuhga 2001 PCB (known outside Japan as “Rohga – Armor Force”) , a good-looking horizontally scrolling shoot ’em up manufactured by Data East in the 2001 :

Wolf_Fang_PCB

When I powered it up, I was greeted by this screen.

missing_SYNC

It was a clear lack on SYNC signal confirmed also by a measurement with a frequency counter on pin 13 solderside of the JAMMA connector.So, given the absence of schematics, I started to trace back the signal with a multimeter but couldn’t find where it was generated.Visually inspecting the board I found a suspicious crack over a trace :

RSCN1560

My multimeter confirmed the trace was really severed.After patching it, the SYNC signal was restored but there were jailbairs on the sprites:

jailbairs_sprites

Sprites are stored in some 42 pin MASK ROMs :

sprites_MASK_ROMs

I visually inspected the area and found another broken trace on solderside which lead to a data line of these MASK ROMs:

RSCN1570

I promptly patched it with some AWG30 wire:

RSCN1572

and sprites were restored:

sprites_fixed

But after this I realized that sound was missing at all.Diverting the audio signal to an external amplifier, I could hear both music and sounf FXs but there was no output from the TA8205AH amplifier on PCB :

TA8205AH_amplifier

So I decided to remove and replace it but , as for my previous Pitfall II repair, I was wrong, it was good.Looking at its datasheet, I could figured out how its mute circuit was made:

TA8205AH_mute_circuit

Checking the 220uF 16V electrolytic capacitor connected to pin 8 of the amplifier gave me a dead short across the terminals.So I desoldered and test it out of circuit having confirm it was really shorted:

220uF_16V_shorted

Replacing it restored full sound.End of job.

 Posted by at 11:06 pm

PAL dumps update

 PAL Updates  Comments Off on PAL dumps update
Jan 272016
 

Today we have some new PAL dumps.

I dumped the specific PAL present on a Konami X-Men 6 Player revision.Board has in total three PLDs, two are in common with the 4 Player version and they were already on our database while this one was unique.

Lastly, I dumped four PLDs from a Funky Jet PCB, board has six devices in total but two of them were registrered.All dumps have been successfully tested on GAL16V8 targeting device.

 Posted by at 10:00 pm

Blandia PAL dumps added

 PAL Updates  Comments Off on Blandia PAL dumps added
Jan 172016
 

Yves_M, one of our members, sent in dumps of PALs from his Blandia PCB.Dumps were obtained from protected PAL16L8 and have been successfully tested back on board onto GAL16V8 targeting devices.Thanks to Yves_M for his contribution.

 Posted by at 9:49 am

Truxton II/Tatsujin Oh PAL dump added

 PAL Updates  Comments Off on Truxton II/Tatsujin Oh PAL dump added
Jan 152016
 

Today I’ve dumped the only PAL from a Truxton II/Tatsujin Oh PCB.Original device was a registered but unsecured PALCE16V8H so I could read it straight in my programmer.Dump is not tested since the PCB is not working but should work on a PALCE16V8 target device or a GAL16V8.Any feedback is welcome.

 Posted by at 10:36 pm