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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

I had a go at making some replacement backlit bands for Tensation a couple of years ago. They came out pretty good, but it was a lot of time and effort. Sadly, I no longer have access to the printer.

Yesterday I took the Win stepper apart to soak it in vinegar overnight, and today I cleaned it – it was just like slime that came off. I lubricated it where necessary and put it back together. It took a bit of fiddling about and fine-tuning.

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

So, I’ve made a bit more progress; I didn't have time for the project for a few days. The parts that had been sandblasted have now been painted. In the meantime, I started working on the mechanical score counter; I completely disassembled and rebuilt it. That was certainly necessary, as some parts were already wearing against each other due to stiff movement and a lack of grease. I also installed the coin tubes.

Nifty Fifty (MPU4) – Solid Silver minimum £1 mod I have a Barcrest Nifty Fifty (checksum-removed) ROM. The Solid Silver feature (triggered by three 50p symbols) used to be able to award 50p. I wanted the minimum award to be £1 while leaving the feature start, lamps, animation, and the rest of the payout logic untouched. Two prize tables were patched: Table at $9C28 Table at $9496 All leading 01 entries in both tables were changed to 02. This forces the lowest possible Solid Silver prize to £1. The file is based on the existing checksum-removed master so no checksum is re-introduced. The working version is: Nifty Fifty - Grok - V4 - Solid Silver Min Pound WhatsApp Video 2026-10-18 at 00.26.25.mp4 NIFTY GROK 4 PROM 1 - 27256.bin NIFTY GROK 4 PROM 2 - 2764.bin

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

I am happy to present to you my MPU 1 Emulation as part of the JFruit Emulator. with thanks to the MPU Mecca for the resources Play Big Apple Play Golden Nudge It Play Lucky Nudge Play Match It Play Match Up

Ace System 100 - Early 1980s Clubbers, with thanks to the MPU Mecca for the resources Silver Machine Rainbows End

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 😄

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

MDM 1981

Pinball Heaven stock them on eBay. https://www.ebay.co.uk/itm/371532527747

I’ve had a bit of time again, this time to work on the mechanism control sequence timer. This one was also covered in rust and grime. The gearbox was almost seized up; I could barely turn it by hand, but luckily a bit of penetrating oil did the trick. That could easily have cost me the motor. I’ve also started dismantling the door; I’d already taken it off. So that various parts can be soaked in cleaning vinegar.

It was time to clean the credit count sequence timer; it was dirty and covered in rust. It was quite a job to get it apart. Fortunately, I’d already replaced the AMP plugs on the switches. After a thorough clean, something wasn’t quite right when I was putting it back together – I kept losing the screws from the switch terminals. It turned out I’d turned the 4-sided rod the wrong way round, which meant the screws didn’t fit. So I took it apart again and paid close attention this time. Some new bulbs (6V 2W) had also arrived, so I replaced them straight away. I also fitted new film capacitors for the RC snubbers. The old ones were already starting to crack and their capacitance was barely there.

****************************************** Lucky Horseshoes by Pete Walton ****************************************** Manufacturer - JPM (1978, drawing 1534) Stake - 5p, 2 plays 10p or 10p token Jackpot - £1 (paid in tokens) ****************************************** Shortcuts... 7 - Enter 5p 8 - Enter 10p 0 - Enter 10p token 9 - Enter 50p for change 1-3 - Holds X - Hold cancel Space - Start (and feature start) ****************************************** Artwork redrawn from photographs of the machine; Circuit from JPM's wiring diagram 1534. ****************************************** With thanks to the MPU Mecca for the resources Lucky Horseshoes.zip

Posted 2 minutes ago · IP (edited) Brenco - The Mint (Electro Mechanical) ****************************************** The Mint by Pete Walton ****************************************** Manufacturer - Brenco Stake - 2p one play, 10p five plays Top award - 25p Gold award token ****************************************** Shortcuts... 7 - Enter 2p 0 - Enter 10p 1-3 - Holds M - Mint Space - Start ****************************************** Artwork redrawn from photographs of the machine; reel strips from photographs of parts of them. Circuit from Brenco's schematic and service sheets; cam timings designed. ****************************************** Thanks to the MPU Mecca for the Schematics Download for MFME The Mint.zip or play now in JFruit

Nifty Nudge Play Nifty Nudge

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

https://www.ebay.co.uk/itm/371532527747

Sorted thankyou both of you

Thanks, Sulzerned. Luckily, I was able to buy them from an online pinball shop.

Still very usable Mike. If you can get some decent hi res pics of a bottom glass for sag you could go down the perspex route which would be cheaper than glass printing.

Thank you for posting, this is a very interesting read and extremely informative.

This is an Electro Mechanical Clubber from 1976 called The Gambler from the long defunct Automatic Fruit Designs Ltd. Thanks to the MPU Mecca for the Schematics Manufacturer - AFD Timer settings - 21-9-76 Stake - 5p, 2 plays 10p Jackpot - £40 (super odds) ****************************************** Shortcuts... 7 - Enter 5p 0 - Enter 10p 9 - Enter 50p for change 1-4 - Holds X - Cancel C - Collect G - Gamble Space - Start ****************************************** Download and play in MFME The Gambler.zip or play right now in JFruit

Great to see all these electromechanical releasees. Many thanks Pete.

Many thanks

Ace Bullion Bars Play Bullion Bars Ace - The Clubman Play The Clubman With thanks to the MPU Mecca for resources

Many thanks 🙂

A Couple of Classic old Marian Electronics games, 1 is a Z80 based Video Machine and the other is a TMS9995 based standard fruity. Thanks to the MPU Mecca Members for the resources. Click to Play Coppa Lot Click to Play U-Boat Torpedo

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!

Probably not me 😁

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

Cheers nick ,, I wouldn’t imagine there would be many of these around now,,,

IVE GOT A PROBLEM. THE new classic layout dont let you go into test mode the door switches dont work. i need to force play so i can see the memoyr debugger for the cash prixe as ive incresed it to 1.50p and ive increased the nudges from 4 to 12 instead of 1 to 8. the nudges work brilliant. the 1.50p will pick the 1 but the animation steps are still 20p to 1 pound. i will be there forever. is there no old version of this on older mfmes

Can't say I have. This was a time where everybody and their dog was making rebuilds. Some like this are quite tasteful. Some...not so much Nice to see it emulated maybe in the future. It probably runs the same tech Good find! Oldskooler

Thanks now with a happy new owner, razzle dazzle is next

Well done, it looks good, nicely repaired

Great work.again . Glad you managed to get hold of the 6v bulbs too.

I actually forgot that I have the top glass 😂 it's a bit ropey but okay

Newbie ... looking to delve into emulators, all fun (and games). Hello from North Yorkshire ...

i Can't believe this thread is over 16 years old and sort of still going 😁 Anyway as for the project. When i started this in 2010 i was always hoping that others would take part and improve on what i did back then(which they have).Materials depend on backlit and none backlit. The best way is probably to look through the thread and see what different members have had success and failures with.

When I worked for Bell Fruit, we never did any maintenance on the reel motor. I don’t know if Ron can confirm that. It was rare to have a motor problem and, if we did, we just fitted a new one. There again, the machines were not very old.

Thanks, Dave 0138 and Zulzerned. It’s a lot of work, and progress is slow. Started on the reels today. Found black, oxidized contacts, seized bushings, and rust. Needed a lot of contact cleaner to scrub everything clean again. Tomorrow I’ll take the motor apart (but first, I’ll read through Ron’s thread one more time). I’ve taken reels apart before, but this is much more complex, and I don’t want to make any mistakes. Here are some photos of the process.

Yes it seems to credit no problem that way, thanks for the offer Graham I just ordered one from steve at swallow

It could be the motor on the main control timer is sticking, With machine switched on your can turn the end of the main control timer shaft by hand which might free it off OR, It could be the variator timer, specifically the variator's cam switch. First, when machine is in credit, two timer's should start clicking away on the main panel. One is the rotary hold/nudge selector with wires around it's board, the other is the variator timer with a red cam which operates a cam switch as it turns.. When you press the start button, the main control timer starts, the reel motor starts and the reel solenoids lift to allow the reels to spin, normally the main control timer would complete a full revolution without stopping but this would allow the reels to run in a sequence. To stop this happening the cam switch on the variator takes over the power to the main control timer motor and makes it stop and start as the cam on the variator turns. As this action also starts and stops the main control timer motor This 'Varies' the stopping time of the reels to prevent sequencing. Once the reels have all stopped in their 1,2,3 sequence, the control timer takes over from the variator and restores the circuit to it's own motor to finish the timers full revolution. Now if the cam on the variator fails either the switch collapses, any of the wires have become loose or disconnected even if the variator motor fails then there will be no circuit to the main control timer motor and as soon as it starts it freezes in the same position with the result your machine just sits with the reels spinning and won't do anything else. if you get stuck post pictures or better still a video of your machine.