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Now that is certainly different! I assume it makes a mpu1 into a mpu2?

Wow never seen that before either bob .er silly question but what Does the add on baord do and why is it there ?

Well I thought I'd seen everything about the MPU2 until I received this today. Not sure what to call it, Frankenstein perhaps or just MPU1 ½? It's a bog standard MPU1 with an add on chassis! The two boxes are bolted together and a patch cable links the two boards. There is also a small sub board for the outputs.

welcome

Howdy people, does anyone have any win plan decals for this? Or any other spares? Thanks

Hi everyone great forum my name is saj

Well,I have to admit..18 years have passed, and I'm still none the wiser. But my kids have grown, and left!! The bell fuit machine, I kind of recall. They had another called rubies and diamonds, which was a 2 quid / 4 quid repeater, respectively. System 80??. They could go mental, as Pete has testified. I don't think the resources have found these machines. Yet. Statto

Yes Bob, you are right "o/ and i/p are sortie et entrée" en français. So, about Cop499, al the pins are 0 volt except pin 8 which is 5 Volts (Vcc). No waves.

Desole Julalain.... I use o/p to be short for output (i/p for input). Would that be 'sortie et entree en Francais'?

There are retro arcades dotted around there is a bowling alley in Preston that has old machines to play

A- up to you B - licensing to let people play, costs money. Premises also cost money. Parts and overheads cost money. Also, loads of people out there like to hit machines when they don’t win, why would somebody risk that? C - Get buying, or visit some classic amusements. Some people call stuff from 20 years “old school” some people are talking about 40 years ago. If you’re talking about stuff from 90’s/00’s there’s plenty of places to visit

Pin 16 on the Z80 (IC9) goes to pin 12 on the CTC (IC8) and pin 17 on the Z80 goes to pin 13 on the CTC. I think that I'm going to redo the small board because there are poor contacts sometimes. IC2 cop499 Pins 1, 2, 3, 4, 5 (ground), 6, 7 are 0 volts, Pin 8 is 5,2 volts. IC1 CD4069 Pin 1, 3, 9, 11, 13 and 14 are 5,2 Volts. Pins 2, 4, 5, 7, 8, 10 and 12 are 0 Volt. Pin 6 is 0,74 Volt. IC3 ILD74 Pins 1 and 2 are +12 Volts. Pin 8 is -12 Volts. Pins 3 and 4 are volt. Pin 7 is 4,80 Volts.

Hi, I am new here but use to play emulated fruit machines from back in the good old days. I have been wondering laterly: a) Should i buy a machine b) Why is there no place to go to play free play old school fruit machines c) I want to play old school fruit machines again like i use to many years ago!

Oups, you are right again. Pin 26 on the Z80 is the reset and on the CTC pin 17 is the reset. My diagram is wrong. I hope that there are no other mistakes... I'm sorry but what does o/p means ? P10 pin 6 goes to P3 pin 13 (RU2-RU6 and pin 12 of IC2) Here is the modified diagram.

Pin 26 on the Z80 should be the RESET, pin 17 is NMI which usually should be pulsing but if it's connected to the RESET line that would explain it. Not sure why that should be as my knowledge runs out at that point? Pin 16 isn't on the diagram which is the INT line, also inactive. There's folks on here a lot cleverer than me that would be able to explain this. OK so it would appear that IC13 is ROM1 and that one is enabled so it looks like it's reading it.🤞 Tracing the o/p of the COPP chip via the isolator chip IC3 pin7? The diagram shows P10 pin 6 and P1 pin 13 which goes to IC2 pin 12. So where does P10 pin 6 go?

I think I did not answer the question about the pins completely. Pins 16, 17, 23, 24 abnd25 are not pulsing but, Pin 16 is 0 volts, pin 17 (reset) is 5 Volts, pin 23 is 3,70 Volts and pins 24 and 25 are 5Volts.

About the roms, the info written are half erased. I think I read on IC13 R 1-7, on IC14 R 2-7 and on IC15 R 3-7 but I'm not sure. I checked the CPU (IC9 MK3880 Z80 CPU) pins you asked me about and some are inactive. 19, 20, 21, 22 are pulsing but 16, 17, 23, 24 and 25 are not.

thanks for reply trying to help someone who has a dond box23 and only has 100 days left on ive seen some dongles and they are dedicated ones lable on the end say c/d but his doesnt have anything on the end of his sticker

Can't confirm sorry as we've only had Cat C machines, but I thought Cat D didn't need the dongle same as the clubbers

Hi can a universal cat c dongle work on a £5 machine or can you buy a lifetime cat d but ive never seen one as the one in machine at the moment only has 100 days left any info much appreciated

Is there no info written on the ROM window cover labels? Even if it's only P1, P2 or P3 so we know which is which.

You are right, nothing to compare the ROM codes, I tried to contact someone who had the same machine ten years ago, but he does not answer me. IC 13, IC 14 and IC15 are 2716. I attached the ROM files on april the 18th and you saw in ROM 3 'COPYWRITE RETAINED BY FBN ELECTRONIC SYSEMS LTD' Maybe that' the problem

Hmm, getting difficult to know where to go next with this? Can you check the CPU pins 16, 17, 19, 20, 21, 22, 23, 24, 25 to make sure there's activity on all those pins. The problem could be down to the ROMs, difficult to say. Can I assume that IC13 is ROM1? That's the only one being read according to your readings which also says the RAM isn't being enabled either. The problem with the ROM code is there's nothing to compare it with to know if the code is good? What's written on the ROMs as I can't read it it from the photo?

Just to introduce myself. My machine has a problem on just some of the sound stages. Maybe I will post a request under the help pages. Alan

Hello. Here is the diagram of the small board. You can see the COP499. Vbat goes to pin 11 of PL4 and to pins 11 and 14 of PL5 (collectors of transistors ITX450 number 9, 23 and 24) but don't go to the RAM. On IC5 (74LS139) the pulsating pins are 1, 2, 3, 4, 11, 13, 14 and 15. Pins 5, 6, 7, 9, 10 and 12 don't pulse. The pulsing outputs are pins 4, 11, 13 and14. The outputs 5, 6, 7, 9, 10 and 12 don't pulse. I replaced IC5 but it's the same. On IC6 and IC7 (74LS138) the pulsating pins are 1,2,3,5 and 6. Pins 7, 9, 10, 11, 12 13, 14 and 15 don't pulse. So, no output is pulsing (pin 7 and pins 9 to 15)