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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

this has tonight interested me to look at what i did years ago, it was definitely a ball ache to change the codes manually which resulted in burning a useless chip that wouldn't work in a machine and of course just loosing the cost of the chips which are becoming more difficult to find. so I have started with AI tonight to do a program which askes for the code needed and insets in into the right place in my original code. this would then make it much easier to produce correct chips as there is no where to get them made these days. so if needed i may be able to make them in the future

Gentlefolk, Thank you for your interest in the removal of the Royal Exchange gamble block. It's encouraged me to post a similar document detailing how I did the same for Stake Up (and Multiplay) about six months ago, for all those who are interested in the inner workings of these machines. They made no effort to consider what you would win if your double-or-nothing gamble succeeded; they were, quite literally, a random 50-50 win or lose. The programmers were probably happy with this as the gambles were limited to £10 so nothing too calamitous would happen. With the new ROMs, of course, it could discover that it has paid £100! These were MPU4 machines and they used Motorola's 6809 code. Although this was built on the 6800 code which was used for the MPU3 machines, it is an order of magnitude more difficult to fathom. Do please bear this in mind if you look through the attached document; it is very much written for coders! Many thanks again for your interest and comments, Bernard STAKE UP AND MULTIPLAY GAMBLE BLOCK REMOVAL.docx

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

****************************************** 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

Hi all . Had to creare a new account as I couldn't get in with my old details , and I couldn't see any way to contact admin . Hopefully I'll get back in to my old account . Sammy

should be the correct file £70 jackpot ARAP1_4.BIN

Some more information. I asked Claude to patch out whatever the code was checking for which was preventing the ROM from running. It turns out that the reason the game won't run is because the code is corrupted. So the ROM dump I posted here is bad. Part of the EPROM has rotted and the data is lost. The sound ROM is good. The machine was used on a canal boat and the humidity and close proximity to water has like damaged the EPROM. Claude was able to salvage 80% of the game code but it's not enough to make a good dump. I tried giving Claude another ROM by Eurotek Designs in order to re-build the missing data, but the game is too different and doesn't share any code with Rol-a-top. So until a good dump turns up or I can find another machine, I can't get this machine working. Paul

Hi, We never did anything with it, did you want for free? Just need to collect before 15th November , pref before in Princes Risborough, Bucks.

Thank you very much. I'm delighted you enjoyed it.

Thank you

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

Thanks pete

Thank you

Thank you

Hi!! Great. Thanks.

Many thanks

Thanks Pete:) BTW There is an old Bronco coming up for sale in Dorset. SILVER CHEST FRUIT MACHINE

Thanks for these

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

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

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

Many thanks. Is there anyway to download and separate the roms and layouts in case, for example I'm missing the rom files?