Leaderboard

Big thanks to Superbank and Clo. EPROMs have been burned and have arrived. I've tried them and they work! One step closer to reviving this Nudge Double Up 😀

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

David Mead came to join me in CS and together we repaired hundreds of SRU circuit boards and those damned Varelco(?) plugs that kept on breaking when you unplugged the board from the reel unit, what a design flaw that was. He had an absolute photographic memory and would remember details from older machines in seconds we had no need to have record kept, although he did as I remember and kept copious volumes of details. I met him in a pub a few months (years?) ago and he is still in the industry and is an engineer for one of the big companies, forgive me I know not which one. Tony Braggins went from development to HR, strange step but there you go. He spent years in that role before retiring and as far as I know became a trustee for a Nature Park. The R+D team changed massively over the years and as I have explained previously the 'cabinet populating' side of things all went a bit pear shaped prior to the introduction of the SWP's, so that will date it for 'you that know' a you may have read I was asked to take it over when on of the w@n7ers left, or should that be pushed. The software department obviously grew from the introduction of the SRU and although we started with two or three developers, eventually it went on to number at least a dozen or more as I recall. I wasn't too involved with the software team until I took over the PM role for the SWP's and then I had at least three working for/with me under the 'matrix management' project which was novel to say the least. I do remember a game we played in the software department which involved taking an eprom and placing it in the end of the Eprom packaging tube and flicking it upwards into the ceiling tiles where the legs would hopefully keep it there embedded in the fabric, of the tile. Cheers

Well the saga continues. It's now the 11th year I've been looking and this time I've come up with another AMP document. Of interest in this one is the addition of two more pin types which have soldered tabs for PCB fitting. Not seen these before but they are the normal type of pins (ie the crimp ones). Still no further with the solid pins though and whether they are a separate item or come pre-fitted with the shells. Comboline.pdf

Spot on, looking forward to seeing the finished article! 👌

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

Fantastic, i'll look forward to see a video of it when it's all up and running. ☺️

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??? 😉

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

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:

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

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..

basically if you don't have the gear then don't attempt it. low heat so as not to lift the tracks, never apply heat for more than a few seconds even with a proper temperature controlled soldering iron, and NEVER EVER EVER attempt to prise the socket out with a screwdriver! if it doesn't come out with finger pressure then its not completely DE soldered. there is no shortcut, anything that goes wrong like pulling away tracks, or pulling out the through hole insides WILL result in tones more hours in corrective action which takes skill to do. here is a video I did 9 years ago with the tools you are suggesting to do it.

not tried that yet but I will have a quick go ASAP.

When I saw the price for the extraction tool it made my eyes water! Just to be pedantic the two white connectors are 15 and 12 way (PSU) so no possibility of mixing them up. Have to agree though that they chose the wrong type for the PSU connector but then again they didn't expect them to last 40 years plus!! Mind you I have seen many examples of PSU connectors looking almost new so old loose female crimps are also to blame. Never heard of Gowerpoint before but there is an example on here showing the connectors but unfortunately no documentation as is often the case.

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

Yeah i think the rules are a certain number of (relevant) posts and/or a donation. Welcome by the way 😊

You are correct!

It's quite possible but, My guess is it could be the similar cabinet as Catch it. If I can find a picture I will post it being interested myself now as to what the machine was.

Nice, looking forward to seeing this one up and working 🤞

If you put the EPROM in upside down you'll have killed that as well. Unless someone can burn another one for you then it's game over.

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

Not necessarily, you could probably buy the RAM chips off eBay just make sure it's a reputable seller and not some cheap shit from China.

in this pic BOTH your rams are the wrong way round! IF..... you insert the ROM the wrong way round it will instantly blow with no chance of data recovery, so as they say with cutting wood, measure twice cut once! so check twice, ...... then check again BEFORE ever applying power! electronics likes to blow if not done correctly

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

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

Well this one came in this week , I wonder if anyone remembers it 👍