You've made a good job of attempting to return this computer to (closer to) its original state. However, this is something of an issue I have with the retro community: the puritanism of returning to original. This computer was modified intentionally. Better would have been to tidy it up and make it work as -was. The DIN plug tethered to the board was connected to rails in the computer so deriving the voltages it must supply should be straightforward. The "big arsed" capacitors were included because voltage rail droop is a real issue with these early PCBs due to long and narrow supply rails. When chips try to drive increased loads (external peripherals), the supply droops, so increased capacitance reduces that. But the increased caps mean greater inrush current which would burn out the original supply regulators, hence changing to an external supply. The mods you found on this computer were installed deliberatiely, and I think it's a shame you have pulled them all out without trying to understand them.

Hello! 😜

Great video Neil. When can you fix my BBC from hell?

Clickbait.

But... WHY!? It was a magnificent example of history, with a classic 2-voltage modification. You ended with a non-working machine and an 8-pack of destroyed RAM chips since it was impossible for them to survive 12V. You could have just measured pinout of that plug. And you destroyed it all 😭😥😔

ohh no ... look at the lower ram they are not 4116 .. they are stamped "MB8118" which are 5 volt only . this is why there was no -5v or 12v connected. remove them chips and put them in the bin

I had a 48k Spectrum with the + case fitted later with a BNC video connector in exactly the same place. The Disciple would be a fairly rare unit these days I'd say

Nice, I havnt seen one of these before, I have only had the 48 rubber briefly back in the day, don't think i ever worked on any other model, did you have a look with your thermal ?

This guy is my idol! I am his MEGA fan! He can fix any computer and any retro console. He can talk about what he does with such passion and intelligence. I envy him for being able to do it every time.

It looks like he has replaced the regulator and charge pump circuit with an external PSU, hence the large caps, it would also have needed smaller ceramics in parallel for higher frequency noise. Might have been easier to identify all the power rails and test the speccy first before proceeding. The other adjustable devices and trimming caps, normally around a few hundred pico farads. There is also a broken track, I think, at 5:01 under the right most dram chip.

Very cool project and video! Thanks for sharing

Great video mate . Hope you get it going .. Id double check issue 3B power curcuit and the jumpers near the speaker . There's something funky about them. I just cant remember and could have been changed .. Fingers crossed you get it running :) ...

When you replaced the two diodes, one of them looked like it might have been a zener. If you just replaced it with a 1n4148 you could have caused your short.

Nice to see you’re still rocking my theme tune Neil 🤩 surely royalties are due at this point?! 🤪🤪

If I do not want to have the real hardware it is much cheaper to fire up the emulator and play it right there.

6:11 Wow. Thats an pretty looking conversion. Look at that! I never knew the lowly CPC could do graphics like that. Although, the only game I ever played on the CPC was bruce lee, with a pal. And he had a green screen with it :S 9:06 o.0 No, I didnt skip ahead. That's so strange XD Before I watch the rest (coz I need to know if I should buy a lottery ticket) I had another friend with a C64. The only game I played on that was turrican...

Nice video Neil! My favourite core is C64, very nice image, awesome colours :) Cheers!

How can i find kick.rom?

Nice , you should try highway encounter, speccy is far better than c64

I have my MiSter inside a C64 breadbin (64X) with RGB/LED keyboard lol

Where do you buy a MiSTer FPGA from?

Apple II would be good Neil. I can send you some of my games to play.

Nice vid, thanks for sharing bud! And multi-load C64 games Like Chase HQ are to be found in the MultiLoad64 or Extras/OtherCRTs folders. :)

Harrier Attack was only 10kB? I know its not the most complex game but thats impressive

hello

TLDW: Yes.

I love a good MiSTer video.

I cant post a comment with links here! Is KZbin not allowing links now?

Thanks for the great video it was the nudge i needed to buy one. Is there a guide for setting up the software side of things. Is the update all script enough to bring it to the level we are seeing in the video ?

Nice video. What about bezels and artwork...is that possible?

Looks awesome, great video. Thanks for sharing :) Cheers!

As somebody that switched from software emulation to a DE10 Nano based MiSTer setup many years ago, I can help explain why it feels better. ..... Muscle memory. Playing 8bit cores, I didn't really notice much difference, because the emulators (mame in particular) can do the hardware timings to near perfection, however by the 16 bit era, a dropped frame here, a bit of input lag there and suddenly it all feels slightly wrong. Because the MiSTer is essentially doing hardware-in-hardware simulation, most cores can get a level of accuracy that simply isn't possible in software emulation. In software it can *look* fine, but that jump you could always make, suddenly feels a lot harder. The clincher for me was the PSX emulation (arguably one of the least accurate cores), I've tried various Tekken releases on various software emulators and I suddenly sucked. I remembered all the moves, but struggled to execute them as perfectly. However on the MiSTer, I was suddenly my old self. the muscle memory took over on a way that simply didn't work under software emulation. If you're striving for even closer accuracy, invest in some SNAC adapters to use OG controllers (SNAC uses a USB port, but sends the OG signals, without the overhead of USB) and a CRT.

mines is still in the box

That does look great if you want an all in one system. I can see it being used in a bar top arcade.

This convinced me to get this unit!

Great video, thanks! I would really like to grab a “real” Mister, but I just can’t get hold of one. Is this clone 100% compatible with the software for the real deal? No different or altered cores to be waiting for? This seems as a god alternative for now. Half the price as well.

Nice video, have a look at the update_all script and also look at scaling options in the menu for integer scaling....... you'll love it

The MiSTer is not fully tested until you've played some ZX Spectrum and Commodore 64 games on it. ;)

Looks great mate .. nice bit of kit .. and just think. all the Tetrus games your lass can play lol .....

I am also working on my old Acorn Atom. Many years ago I lent that computer an acquaintance of mine, and got it back in non-working order. I have no idea what happened to it, and lost all contact with that acquaintance, so I cannot ask. I got it working to the point it display's "Acorn Atom" and the prompt. But the keyboard is unresponsive. I took a measure on those key's an most of them are simply not functioning. The big problem is - I have the same key switches as the model in the video has, but these switches are simply not longer available (as far as I know that is). If somebody knows where I can order new ones then please let me know. I can 3D print a matrix replacing the metal keyboard and place modern key switches on it. But that would, of course, make the Atom not longer an original. I am now dubbing what my next step should be. I think temporally do that matrix solution until (or if) I can get a hold of those original keys to get the system at least back in working order... I did the same with my (even older) Cosmac Super Elf, and it is fully functional again (I only have to find a good replacement for the original FND500 numeric display's that went very dim over time). It would be nice if I could add that Acorn Atom to the "working order" collection. Anyway - You did a nice repair, and I am happy to see that great oldie in working order again.

Why the use of an electrolytic capacitor? Why not a regular capacitor?

Superb video! Thank you for showing how it's done.

amazing video. i need to finish mine 😭

If you want your plastic screw holes to last longer, gently turn the screws backwards until they click, which is the screw finding the thread. Then tighten clockwise. This prevents cross threading, and missing the threads, and the screw trying to make new ones, spreading the hole, and sometimes cracking them.

R202 has a bad solder joint.

Never actually seen an Atom other than static pictures. You can definitely see how it evolved into the BBC. Its quite telling how few were sold compared to the ZX80 / 81 due to their much lower price, even though they were much inferior machines. Its a lot more similar in approach (and price) to the US computers of the same era with a good keyboard and plenty of expansion. Makes you wonder what would have been had Sinclair not have undercut everyone on price for the first real UK home computers.

Great video! I never saw inside of Acorn Atom, a bit of a strange pcb/keyboard arrangement :) Cheers!

You've inspired me to port Bug race to the Apple II

chrisacorns.computinghistory.org.uk/docs/Acorn/Manuals/Acorn_AtomTechnicalManual.pdf