The part where you tore out the old breadboards gave me frightening flashbacks to ripping the massive wire looms out one of my old pinball machine. It was such a relief to see it all come back together!

I can't thank you enough for all these great videos. And again - what a progress! Man - you've got far too few subscribers.

stacking the boards like that is genius

Your joy was absolutely apparent and deserved, lovely work James :)

Wow, the way you just use hot air to solder makes me want to move to surface mount too. I have never seen that. It's nice to not to have to touch every pin with the iron any more.

"If in doubt, bathe it in flux" makes me think of diodeGoneWild and his "moooore roooosiin, moooore rooosiiin"

I have been looking forward to this one. I enjoyed watching it during my Sunday morning chill hours. Keep it up!

You know, the thought occurs to me - I scrubbed in for an open heart surgery back in the day and had less overall angst than watching you manhandle the heart out of that thing! What a testosterone laden thing to do!!!!!

Fantastic result! Amazing how much less space it all takes!

James, that is amazing. Every time I see a notification you uploaded something, I know I'm in for a treat. Mind boggling stuff. Every time. Little jealous of your skill!

I love how the microcode EEPROMs remain as a relic of the breadboard version.

You are at some level mate, great Job! Did see some pins not soldered perfect, like at 5.32 and at 27.18 Think you have fixed it already off video, because it works fine. Again, fantastic Job!

Well done again, that's a lovely looking set of pipeline boards. I'm both pleased and slightly envious of your boards working first time. I don't think the first revision of _any_ of my boards after the first one have worked properly! Really looking forward to the finished clock circuit.

Thanks James. That is awesome. I'm glad it came together with a only a couple of snags. Take care.

Nice work, and glad to see it runs!

I will be awaiting to see it generating VGA and Sound. Cheers ✨✌

If the headers are on a 0.1" pitch I use vero-board to hold them it place. Or just a finger and solder 1 pin. been doing it that way since I started way back when. :) (Started in the electronic engineering in 1976) Never used bluetak as it leaves an oily film on the board, and solder does love a clean board.

Awesome! Great to see it working with the new board. That pipeline looks great now! :)

That is some great progress !!

"If in doubt, bathe it in flux." Sounds like Rossman's Rule to me.

A technique that I have used when soldering turned pin sockets that needed to be absolutely at right angles to the board onto a PCB is to plug other pin header strips into them at right angles spanning at least 2 sockets. That guarantees the alignment. The most extreme case was soldering 64 individual sockets onto a PCB in an 8 x 8 grid when building an 8 x 8 x8 LED cube. To make things worse the individual sockets had been removed from their plastic holders

Amazing and beautiful and awesome!

An alternative way of managing headers is to slightly offset them so that the friction of the pins in the holes stops them falling out. Learned that one from UnexpectedMaker. Awesome video. You continue to amaze and inspire. :)

Looks perfect!

Congratulations for not screwing up anything important! I tend to get to rev. C before my PCB's are 100% correct. :-)

22:54 first time I ever saw you use the microscope to position the mask. LEVEL UP! Nice..... "If in doubt: Bathe it in flux" Amen brother

Very satisfying. While not the most interesting video in the series as a viewer it's probably the most satisfying one as the builder. HUGE accomplishment here. What microscope are you using? Are you happy with it?

Hi there, thank you for your videos, there are very helpful. I'm trying to create an 8 Bit CPU like yours and I have a question. I already created a prototype breadboard version of my CPU and I try to create a PCB version on EasyEDA like you. What track, via and clearance sizes should I choose ?. I don't know a lot about electricity. Thanks in advance for your help and thanks again for your videos.

"Let's be bold!"

May I ask, because I couldn't clearly see it: where do you actually describe your instruction set architecture? I want to know how you map the 8 bit instruction words to register addresses, etc. I just gleaned here that in every pipeline step you just have an EEPROM which drives the control lines. And what I like about this -- even though I am still griping about the benefit of pipelining, what I really like is that this approach might reduce the need for multiple EEPROMs to get more than 8 control lines asserted, also, it is much better than a micro-coded multi-cycle execution architecture. I.e., instead of having multiple microcode steps (as in the Ben Eater CPU) we break this up into pipeline steps and that way we can use some CPU resources in parallel. This is compelling. But anyway, I still don't know what your ISA is, can you put a link here to the episode where you explain that? Thanks.

Watching you build all these boards has me really starting to think about using surface mount components in the future. Also, I've been wondering, if you're looking to get a bit more room, why don't you put the caps on the back side of the board? (I'm sure there is a good reason, but I don't know what that would be).

Blu-tac works well for holding things in place while you solder them. Do you use the microscope to see what you are doing when placing components, or is that just for our viewing pleasure? Watching you assemble these boards gives me a lot of confidence that I can do it myself when I get the opportunity to try! Definitely need to get a little microscope for when I do. Really good to see it work out of the box. This is getting too easy 😄

too late to matter here but.... have you thought of using a pad of some type of styrofoam to hold those pins steady. seems like they would stick in and hold still and you could stop fussing. you could be careful enough with heat i think. might consider for future - at least i hope there's more

I kow thi is a very old video but I think i heard somewhere that a dab of CA gel glue is good for holding both sockets and SMD components to a board for soldering.

Awesome work, curious if you’re going to sell PCBs and share eprom code?

"I wonder if the orientation matters" Naaaaaah you can fit them tombstone style to get better RF characteristics (REF: "Eevblog speaks to The Signal Path lab", recent video) Good enough for Landannnn ;)

Are you maintaining online documentation of the instruction set? And your assembler? Publish that and some software might start appearing....

Same thing with NOR gates, right? You can use them in the same way as NAND gates.

My Studio ear says you ran the audio at 50% speed sometimes ;)

I like your header method, really elegant! But I was thinking you could use a board (Like wood) to place on top of them, then flip it all upside down like a cake? Could work! They're bastards at the best of times :( hahaha

Any plans to sell this as a kit? I’d love to buy one

Hi Guys 😍💋 💝💖