Leaderboard

I now have some reels and a display. Many thanks to Phil1974. He is your top man for sru bits...

I assume this is the Data I/O 22? If so did you know a guy called Mike DiBattista has written a Windows program to talk to all the Data I/O programmers and very good it is too. I use it all the time with my 29B. It's a free download from the groups.io forum DataioEPROM but you'll need to sign up first. Hope that's useful.

Working !! The new board arrived and when I took the old board out I realised one of the new chips was only connected one side !!! Put them in correctly and all working and know sec fault too !

Nice one pete and yeah phil does help out with rare bits .

I bought off a fellow cowboy. I wish I could afford to buy off licensed sellers for peace of mind with full after market service 😉

Cowboys in sheds know a lot more than certain licenced sellers

New document added - Bell Fruit Microprocessor - TECH DOCS - The MPU Mecca Bell Fruit Microprocessor (Black Box) System outline, fault finding, etc.

Here are the Eproms for you 🙂 Nudge Double Up Roms.zip

A quick update from the "Johncade". Pick of the pack now back to her former glory. A couple of video's including "It's a Jackpot" ;). Time to pull the next project in

I've just realised, I forgot to post the sound ROM for the Rol-a-top. So here it is. Cheers, Paul M27C4001@DIP32.BIN

I can do this for you, drop me a DM 😊

Another update. I scanned and uploaded some more pdf docs yesterday. I've also just tried photographing some schematics, but I'm not that happy with the results. I might see if I can get them scanned professionally. They range in size from A2 to A0 and beyond. The largest being 'Hot Dog', which measures 180 x 82 cm. 😲

New into the “Johncade” showroom. Been abused as was stored in a shed. Will be bringer her back to her former glory using my cowboy techniques.

Quick update. First document scanned and uploaded. Bell Fruit - Electromechanical Operation - TECH DOCS - The MPU Mecca More to follow.

Hmmmm, you look like you could be one of those "cowboys in sheds" that are spoken about in. Are you to be trusted??? 😉

Big shout out to Peter Falconer aka "Magik" for his continued and invaluable assistance in repairing my broken mpu boards. Peter has talked me through repairing a couple of mpu boards and I really couldn't have fixed them without his awesome knowledge. He has a YouTube channel with videos of his repairs - well worth a look:

Funny you should mention that! I used to have this one.

Love that! Very nice to hear about the comprehensive documentation and in exactly the right hands. I got lucky with second hand modern kit that can handle oldskool jobs like 2708

Fine as they are just going to be used in front of machines in my man cave.

ROMs are about as it's emulated https://www.desertislandfruits.com/forum/index.php?/files/file/1246-nudge-double-up/ that's the had bit covered I've got the right kit to burn SRU roms and perhaps have some good spare 2708 too. Looks like I ripped a set 😁 https://www.fruitemu.co.uk/ib/topic/19629-sru-unknown-rom-set/#comment-305933

Hi all I recently discovered some old Bell Fruit documents and posted about it in Ron's Electro Club.. Bell Fruit Documents - RONS ELECTRO CLUB - The MPU Mecca Some of the documents relate to (Black Box) MPUs and other later stuff, so I thought I would mention it here as well. I will be scanning and uploading when I can.

Although I have no pictures, I think Stop it was the MPU version of Catch It. The Stop it schematic shows virtually identical bulbs and button layouts etc, found on Catch It plus, According to the schematic Stop It has electro reel solenoids making it an early MPU machine released around 1979 the date of Catch it too.

Ah, but was it stored in a shed by a cowboy or an Indian? Do Indians even have sheds. Come to think of it, do cowboys??? Eeeeh im all confused now! 🥴

Leds might be a bit kinder on the plastics. Less UV and heat. I guess it depends if you have a colour temperature of led that you like....the old flos were kinda warm white

im from county durham united kingdom pleasure to join the community

You are lucky! ROM attached, checksum matches your label. csv0-07.bin

No, that'll do you no good at all for MPU3 AMP crimps. I did do a thread on this ages ago if you can find it. I did make a three pronged tool which worked pretty well. The official one is really expensive although it is still obtainable, probably because no one has bought any. The part number is :- 455822-1 but it's over a £100 !!!! I found the easiest method was to use two small jewellers screwdrivers and turn the crimp in the housing until the split in the crimp is in between two of the slots in the plug. Insert the two screwdriver blades either side and then pull the crimp out. It should come out fairly easy but don't force it as if you mishape the crimp you'll never get it out!

At first glance I thought it was a reglass of JPM's Hold and Nudge. But those metal faceplates firmly, make it very early JPM SRU tech. Classic MDM fruits, and a 2 quid jackpot. Quite a lot going on here. Sometimes the alterative artwork is just as good, if not better than the originals they are trying to clone. This is no exception Statto

Your SEC meter isn't working, top left corner just above the Astra logo. Check it's plugged in properly at both ends of the cable and if it still alarms, buy another one from eBay.

Well I dunno I don’t think that’s a lot, they was everywhere 87/88/89 started to disappear around 1990 if you caught them after somebody had copped and you were after a jackpot you could do your nuts!! Or be strimming for hours..

I moved the flying saucer sensor towards the top of the tube and then made sure the other one was ok and then the left hand tube is now in use and the right one locked out. I will precede with filling up the tubes and see what happens.

Do have a look at Mikes program you won't be disappointed. It's called PL2260. Congrats for doing your own though, way above my understanding.

I had thought about building one of those. Never got round to it though...

Didn't realise there were 4 supply voltages needed. Not many pins left on the chip with that lot connected 😆 I'd think twice before putting a rom in something I'd knocked up... Especially if it was the last one known & no backups existing... Then there is the software side and multiple manufacturers of 2708 Looks like 2708 have got expensive to come by

Wow. That's a lot of £s for an adaptor. I did build an Arduino shield version, which initially read eproms ok, but when I tried to burn some, they literally burned 😳. I'm guessing that I got something wrong.... An easy to build programmer for 2704 / 2708 / TMS2716 / MCM68764 / MCM68766 EPROMs – Matt's Tech Pages https://share.google/y1qxj95mkDGOs1Bk1

Where from? Is it guaranteed working order? Also, have you tried this.... Turn the machine off Set switch 8 on the right hand side DIL switch to ON Turn the machine on and leave it for a few minutes Turn the machine back off Set switch 8 back to OFF Turn the machine back on That will clear the RAM and if you're lucky it might boot up... Finally, make sure jumpers J1, J2 and J4 are set the same as they were on the original board.

It's resetting every time the red light comes on.

Re: pinball and LEDs. Agree, BUT…. …you can get ‘LED OCD’ devices that really help with this. Plus, the ‘daylight’ white colour temp of some LEDs really helps with the playfield insert colours - they’re the actual colour, not a very warm and dull version! I'm all for retro things looking original, but likewise I’ve spent a fair amount of time choosing the right LEDs for my pinball machines, then making sure they’re not too bright. They save a bit of power and are generally easier on the lamp matrix circuitry, and they last years so don’t need changing! A lot less heat too. pictures don’t really do it justice.

Myself personally I wouldn’t put led’s in an old classic it just wouldn’t look right the fluorescent tubes give it the warm light look as it should have been ,,

Picked this up. Needs quite a bit of work but should come out ok. Anyone got any stories of this machine? It’s made nearly 48k profit! Managed to find a board out of the old stock room 😎

But have you seen the cost??? Scandalous! Much better to buy from cowboys or Indians from sheds, garages, lockups or outhouses. Maybe even oasthouses. And what's this after market service that you speak of. Is it a warranty of sorts??? Ooh it's so intriguing! 😁

New document added - Bell Fruit Microprocessor - TECH DOCS - The MPU Mecca Bell Fruit Microprocessor (Black Box) System outline, fault finding, etc.

Can you post a photo of the label that's on the faulty EPROM please? It will help identify what code needs to be on it.

You need to find a cowboy with a shed. What’s the issue?

The one you put in upside down is definitely fucked. Don't worry, we've all done it...

Thank you for the fantastic layout.

Here's my working spare board. Your right chip is upside down.

Ebay item 197550149795, £27 and says it is working, if you are struggling to sort yours.