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Gentlefolk, I've uploaded a new set of ROMs for Barcrest's Royal Exchange. The original imposed a gamble limit of £20 for all initial wins less than that. The new version will allow a gamble of the current win up to a maximum of £100. Here, I've attached a Word document explaining how this was achieved for all folk who, like me, used to think "How did they do that?!". Please be aware that it is not for the faint-hearted 😊 I'd like to thank chris217 for reintroducing me to the wonderful world of 1980s fruit machines, Sulzer Ned for drawing my attention to the idea the the emulated ROMs can be tinkered with and Eddie Coxon, who advised me of the programming language used and provided me with a huge manual and lots of helpful advice and hints. Now that you all know exactly whom to blame, I hope you enjoy the new version together with this documentation. Best wishes, Bernard ROYAL EXCHANGE GAMBLE BLOCK REMOVAL.docx

well done bernard. i will probably do NIFTY 50 today to rid the petty 50p on the solid silver so you at least win a pound. I unblocked the nudges and cash prize on STOP THE CLOCK so the nudges go to 12. it so far runs good. I think the club machine blocks were more aimed at the DOUBLE OR NOTHING gambles so the machines didnt get smashed up. can you imagine having 50 quid and do a double all or nothing and it lands on lose

Yes i would love to have met someone who programmed them. My son designs games for children online and he has a programmer that makes the software. I am pretty sure i was told 20 years ago that the same guy that designed both SMASH AND GRAB and BIG SHOT moved to the states. There was also easter eggs programmed into alot of these so the programmers would go around the country if they lost their jobs and canned them. I think i heard an ACE prgrammer got caught out. Would have loved to have been about then. I was only 14 when sag came out , i was in the industry but was told i would never learn how to break into these programs. I said "HOLD MY BEER"

Its sounds good bernard but if you remove the gain code then what would happen on unlimited nudges 🤔. Id hate to fluff the jackpot and then think it doesn't matter as gain will nudge the bars in but, without the gain obviously this isnt possible unless its a different bit of code for the unlimited nudge gain .

Thanks for this, John. Exactly the same point was made to me verbally only a few days ago. The 'exchange for nudges' option ensures that you don't get a decent win and it doesn't offer it at all if the current win is too high. Ignoring the cherries is, I think, possible as the code stops looking for winning symbols once it finds a cherry. Telling it to stop looking appears fairly straightforward but you would then need to avoid the GAIN code which looks for an alternative when it finds a win. Obviously, it won't find one if the whole point is to ignore the lesser win. That is far more difficult. I'll take a look when I get some time. Please don't hold your breath 😊

Thank you. I appreciate it's tough going but I hope it will be useful for someone. These gambling blocks seem to annoy everyone these days! Back in the day, they probably saved a lot of people some money 😄

Thank you, sir - I do agree, but I also wonder who would have risked a gamble of £50 or thereabouts forty years ago? 🤣

Here is my STOP THE CLOCK modded roms 1: all cash 3 pounds 2: nudge block uncapped to 12 nudges on random stop 3: character and checksum removed (so you can make a spare card like i did) MOD 7B - CHARACTER REMOVED - TO BURN TO EPROMS.zip

Your thought that it may be a different piece of code is correct. When it's letting you off a mistake on unlimited nudges, it looks at the reels in order (4, 1, 2, 3) and, if the reel it's currently examining is not displaying a triple bar, it nudges it up until it is. This has the strange result that it nudges a reel up 23 times instead of once down if the triple bar is immediately above the winline when it starts. It also means that it nudges straight through the cherry. The usual GAIN code is not invoked at all. I think I tried to demonstrate this at the end of my recent YT video entitled "Four-reeled extravaganza...". You raise a very important point though. Changing one thing may indeed have unintended consequences elsewhere! 🤪

Good for you! It's not easy and requires a lot of time and effort. They'd certainly not be far wrong if they calculated that there would be hardly any people with the determination to persist!

Does anyone have any other Summit Coin roms ? I Have Ultimate Nudge already, I am got the tech running on my JFruit emulator. If you are interested you can try it at Click to Play Ultimate Nudge

Excellent stuff and, you're right. £50 was a huge amount of money 40 years ago but some would have been unable to resist the temptation! It's great to hear from another who is prepared to attack the codes on these wonderful machines. It always astonishes me that there are so few comments along the lines of 'I wrote the software for these back in the 1980s'. I suppose it was a long time ago, though 😜

Brilliant, thank you for doing it Bernard.. 🤩 Another challenge for you if you get time.🙏 This is an issue I think spoils the fun on Royal Exchange for home use.... When you exchange for nudges there's always a pesky cherry that stops you getting a better win, would it be possible for the software to ignore the cherry and nudge in a better win? John

Great work Bernard. Can't say that I understand it. Impressive though 👏. Thanks for sharing and explaining 🙂

Probably not me 😁

Amazing stuff bernard and.hats off to you for this great work which definitely adds a better game to these mpu3 clubbers.

Sweepstake next?

A wee update on this the machine is all back working albeit it needs a new alphanumeric display,a thank you to everyone who commented on this post especially netdent and midibob who helped alot. Cheers Brian

Layout NCU.rar

Should have that file when I did some 10 years ago. Will have a look... But the chip on my board was not locked so I just read it with my dataman pro.

Hay @jane.sharpe7 the buttons are not set right in the background on this game so test mode wont work... but you can add the right ones for back door (I'm not very good at this but you'll get the idea I hope)... Go to design then select Edit Mode right click & Draw a checkbox - Right click on it & change it to value 23 - this is the back door and when checked gets you to back door open repeat and draw another and assign value 22 - not sure on MPU4 but this gets you to this state when checked - VPT on the display and the start button cycles through in & Out. Draw another button and call it 21 (I think) and that when checked and un checked gives test plays - not sure what value the test switch is as I don't really know MPU4... think this is Refil. When you've worked out what the switch numbers should be, un check them all and update switches into the Game configuration area (think this is right for service, refill and test???):- you can work it out by trial and error... Uncheck Edit Mode and the buttons work as you think they should. Save on exit Enjoy

Will do 👍👍