dondplayer

Not convinced that is a good idea as you are just shining a spotlight on the already emulated stuff (working correctly or not) and they may decide that shouldn't be around either. Will let others comment though.

Good call - I believe repeating the method can 'critical' these if they are set to a too high percentage.

The corner method was stopped by what people widely refer to as P4 (program 4). So for your build you will need the bonus unlock then at least some of the life, steps, super 7, etc. As I say I think chop did do a vid.

No widely distributed build took away all the cheating (but a couple of rogue builds were around that give an impossible hint or relock the bonus inexplicably) - I think chop did a video on the Alien method that worked on the widely distributed later build. Generally only the supplier company would have the keys to the top and bottom doors (note they usually have an extra padlock on top of the usual lock in each case). Would be exceptions of course.

Yeah first one surely is MFME but second one is too new. Robbed from somewhere however.

Yes it's strange that this would ever work because the processor controls the reels not the other way round which would mean the processor was somehow taking notice of a jumped reel position.

Yeah this one - had one in a student bar (now gone) that was a reasonable earner.

That's looking better, still a couple of issues but almost there.

Sound ROMs seem correct to me - I am guessing there is some issue with the feature board because the demo shows a collect immediately on entry - not even one press of start on the feature board.

The cobra emulator is featured on a channel that also previews a couple of scorp6 emulations- this queen one seems to have issues but is getting there.

Solar Power Generator - it wasn't that hard but you only just had time to do it. So waiting for any 'monster' to pass and pass back more than once would stuff you.

I completed that particular game without knowing about that although I think I used infinite lives to do it. As I recall level 19 was a git time wise.

What I would do is look at what we have: A load of red wires so that tells me there is a common somewhere else - maybe through those screws I see. Then I would put a multimeter on each of the wires (so from the assumed common to each of the reds) testing for resistance. If that turns out to work (so not open circuit) apply using a variable PSU 5V DC initially across each and go up from there. It's going to work from the voltages supplied by the internal PSU I would expect so you know what to try. However better to wait to see if anyone else knows without guessing.

Well for anyone who wants to have a play I've done a hack of the ROM so the superhold bonus is now available on £1 play - attached. I say I but it's a big thanks to @johnparker007 who has already said how to bypass the checksum and gave me a handy way of knowing when the code is in the bonus routine. So for 25p or 50p play there is no change in behaviour - I've tested it on all 3 stakes and seems to be all good. Did make a schoolboy error on one run where the 25p stake magically became £1 stake Technical info: Although memory location FFFF1185 seems unused it's being read up along with FFFF1184 so I used FFFF1124 as a storage location. This is easy to change in the new bit of code I've written should it be discovered it is in use. As I've said before I'm an amateur Z80 programmer from the late 80s so this has been a challenge - it's took hours to learn the 68000 mnemonics and write some simple code using EASy68K to get the actual machine code values. Probably have taken John minutes to do what I have Today but I had a free day so it's all been good OCI71_0K_SH.zip

Here's a short showing the JP superhold and the Mega Streak on Oche! Oche! Oche! that I recorded the other day. Usually it won't let you get the MS but the steps meant it trapped itself. Coincidentally it looks like the modified ROM might not be far away going by a comment by @johnparker007 in another thread.