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I've got a early Naomi motherboard that is working apart from error 03 caused by a bad X76F100, usually I'd take one from a scrap board but the only scrap boards I have use the newer 93C46 eeprom. I ordered some X76F100 chips from China thinking I could just program the data from mame on one and...

I've got a Naomi 1 motherboard on the bench that runs as I have audio but doesn't output video, I've tried swapping the 315-6145 dac with a few from junk boards thinking that would be it, as it seems to be a fairly common failure. After that didn't work I did some tracing and found some shorted...

Sega System16B original Japanese Wrestle War pcb, fully working with new battery fitted in the CPU. Requires a vertically mounted monitor, JAMMA adapter is also included. £180 £170 + £10 postage, payment by Paypal (friends / family option) only please. Konami Devastators fully working pcb...

For sale an original Japanese R-Type Leo pcb, it has had a couple of chips replaced on the main board and one small trace repair on the underside of the main board, overall in good condition / fully working. Payment by Paypal (friends and family option) only. £700 (approx $870) £650 ($800) +...

Capcom-Q1 DL 1425 Qsound chips tested and fully working on a CPS2 A board, cleaned of solder and ready to go in a socket - £50 each + postage. (Loose chip only) Postage in UK is £5, Europe £8 for costs else where PM me. Darksoft has the empty modules for sale here...

As subject anyone know if it's possible to reflash a bootleg cartridge to be a different game? Guilty Gear / Knights Valour bootlegs can still be picked up pretty cheaply from aliexpress but not Dolphin Blue, Mega Slug 6 etc. I'm wondering if it's just a case of reflashing some tsop flash memory...

I am trying to convert a Street Fighter 2 Hyper Fighting to the Japanese Turbo version but I am having issues. I changed the program rom 23 (s2tj_23.8f) which runs and mostly looks good with the original maskroms but the turbo logo is messed up. Looking at mame I see I also need to change the 4...

I just picked up this R-Type Leo board I've got it booting but there are sprite issues. The sprites are missing completely I noticed the roms (00,10,20,30) weren't getting addressed this was an issue with JP3 making poor contact. With this fixed (and in the correct position) they're getting...

I am looking for the following Custom Konami cpus 052001 and 052526 (found on Chequered Flag, Ajax / Typhoon, Super Contra, '88 Games, Thundercross, Crime Fighters, Aliens, Gang Busters, Black Hole) Konami 053247 surface mount custom (found on Over Drive, Escape Kids, X-Men, Xexex, G.I Joe...

Fully working original Time Killers jamma pcb. £55 including postage with UPS (UK / mainland only) pm for postage costs else where. Payment by PPG please. Fully working Mexico 86 (Kick and Run bootleg) jamma pcb. £30 including postage (UK) pm for postage costs else where. Payment by...

I've got a couple of boards with dead custom konami cpus (052001 / 052526) does anyone know if these are just 6809 with a custom pinout? The pinout is in the Aliens and Haunted Castle schematics so if that is the case it would just mean making an adapter pcb.