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these are the roms that should now work, ive hacked CHARACTER and tested in emulator they work i have removed character and checksum. if you compare to original you will see what i have done i have added some FF's at the bottom to remove checksum TRY 4 these are the correct 10p play roms.zip

so in above photo you search for C501 you can see 26 next to 16. change the 26 to 20 and nearly all early crests ive done work.

im the guy that has hacked mpu4 and it all early mpu4's are PISS EASY. in early crests they did not MAP THE LAMPS. i have a barcrest " WAY IN" with 2 program cards i hacked with NO CHARACTERS in them (no lamp problems), many people can back me up TONY SCOTT burned them for me and i hacked them sent them to him and he burned them and tested them in the machine before posting to me. Now when i say "hack character" i mean early mpu4s not later games. i believe i couldnt do road hog. that could be when the LAMP MAPPING started. ... But i done the following SMASH AND GRAB (no character/ checksum hacked/ all cash no tokens/ changed 3 quid to 4 quid jackpot) WAY IN (no character/ checksum hacked/ all cash no tokens/ changed 3 quid to 4 quid jackpot) HIT THE TOP (no character/ checksum hacked/ all cash no tokens/ changed 3 quid to 4 quid jackpot) TOP GEARS (no character/ checksum hacked/ all cash no tokens/ changed 3 quid to 4 quid jackpot) BREAK AND TAKE (no character/ checksum hacked/ all cash no tokens/ changed 3 quid to 4 quid jackpot) and STOP THE CLOCK (hacked character but all cash is in rom 3 and for some reason ROM 3 checksum alarm keeps going) i have had programs that even after the HACK still needed any character in it, any would do. it just needed a chip in it. now i havent garanteed ANTHONY that this crackpot will work incase it dont but i dont see why it wont its the same date as the others above. HOW DID I FIND OUT HOW TO DO IT???? because i compared BREAK AND TAKE to CRACK THE NUT and bit by bit i changed to see what things done. when i changed "26" to "20" next to a code that said C501 in ROM 1 of all old crests it ran with no checksum and no character. (i think the C501 comes up twice. if so its the "26" next to "16" out of the two of them) basically CRACK THE NUT doesnt need a CHARACTER so i found it thanks to that. HOW DID I FIND OUT HOW TO DO ALL CASH and overide TOKENS in STOP THE CLOCK and BEAT THE CLOCK (same game just 4 quid instead of 3 quid and £2 before tokens instead of £1.50) this program showed me where the cash before token limit was and the jackpot . change the TOKEN LIMIT from 14 to 28 and it pays all cash. "28" is £4 jackpot (i forget what 3 quid is off the top of my head) £1.50 is "OF" and "OA" is a quid. i also learned from stop the clock how to do ALL POUND PAYOUT instead of 50p's but for some reason this trick dont work in WAY IN but does the others forgive my writting i know its terrible, message me on facebook incase i dont come here. lately i havent been on here much but anthony told me about this post. i will talk people through it over the phone so you can easily do this yourselves. i hope his crackpot works. like i say i've had the odd ones play up (but rarely). ive done loads of them, remember i cant do later ones, your right they used a completly different approach to the later machines. JAMES SHARPE

I've just ripped 3 rom sets from 14K boards. Set A and C are the same CRC32. but on one CPU card there was a daughterboard with a PAL16 chip which my burner can't read (it won't do PAL chips). the other did not. I didn't see either in the rom dat so I suspect they are new. S80_Mar19.zip Have no idea what games they are.

Hi just got these roms I couldn't find this version on here so uploaded hope there useful cheers. Thanks to James at coin OP king for dumping them for me Potluck 1.2.zip

Many thanks...

Will try and have a look tomorrow afternoon for one have broke a few just got to find them

I will have a Scorp 2 cable somewhere if you can wait a couple of days I will have a look for you as they will be in one of the many stacks of boxes of spares I have

It's funny how sometimes the smallest jobs cause the most head scratching. I'm currently looking at a BWB ROM extension board. Not much to it but it doesn't work! It came in with some broken pins and the quickest repair was just to replace the row with the broken ones on with double ended pin strip. The pins are slightly longer than the original socket type fitted but I've not been able to source any? The ROMs I dumped last week, which looked OK in the hex editor although I haven't tried them in the emulator. It looks like someone has had a go at this sometime before as the 74LS10 has lost one of its pads albeit it's not used. There is no connection to pin 1 which I find odd as you shouldn't leave gates floating? Here's the diagram... One thing I've found with this board is my logic probe picks up signals on the supply lines so I have to use a scope otherwise it sees erroneous data everywhere. It's got to be something silly, maybe the ROMs are damaged? The I/O and CPU are both good and even manually grounding the reel 4 extension wire doesn't wake it up. All good fun.

Got to be mpu1 78 would be about right I'd say but just odd they are not on that list .

Lovely. Thank you.

The chr chip doesn't have to be cracked just by passed surely ?if someone clever enough can hack roms then they can tell re write the code to ignore the check or at least that's how I understand it .by no means easy but a few on here can do it !

These were the smaller type I had to do to my PC92 connectors back in 2016, rotten the same as yours, as o can see very green and rotted out. you just move one wire at a time to the new connectors without buggering the new connector! next connector bad ones replaced old removed ones! yuck! with new shiny white one in background it's not that difficult

so the machine is finally coming back together.The lamp mask just fell off the back glass.So its all been sprayed,all double sided tape replaced,all lamps removed and cleaned and replaced where needed.A new coin bezel fitted and reels back in.Its looking very nice.Few more bits to do but struggling with tubes at the mo.