C64 KU Motherboard replication update

The "original schematics" that I refer to in the video is actually the 250407 schematics.

[aphexteknol]

Board is looking great bwack! Thanks for the shout out as well. This is the kind of C64 project I find the most interesting. :)

[doktor]

Hey bwack! Sooo great job!!! If COMMODORE one time will revive the company, you will be the first choice engineer!!! :-) Best regards, Doktor64!

[taltechchip]

You are doing a great job! Its like a fresh wind on those old board designs. I hope one day your work will be available to the C64 community. It will make troubleshooting so much easier. Thank you!

[svenpetersen]

It is indeed a lot of work. I think, the 3D model of the board is interesting. I am excited about what you are doing, here.

[TheHighlander]

Having a board made with a bunch of mistakes to find doesn't sound like heaps of fun. Imagine how it was for the original designers though! What a job. I think about that when looking at things like the SID or the VIC. So much work went into designing and building that.
I'm sure your work, however complete, will be a spring board for some other person in the future. Basically the C64 is holy.

[flymario]

It is interesting you would create a new C64 and not just use 64KB static ram chip. Your work is beautiful! Very very impressive! We are getting C64 parts in very short supply.

[MindFlareRetro]

Sorry - late to comment. Amazing work! This is such a demanding project to take on -- kudos to you. I can't wait to see an actual PCB created.

[lostindesolation]

This is some massive and awesome work!
I've been using Kicad a while now as well, and it's really great once you get accustomed to it.
On a side note I just started looking at implementing a replacement for the 6526, but then noticed you already had done it in the form of VHDL . I have a couple of questions about the project as a whole, but especially concerning time of day circuit, to be precise the difference between chip revisions and the bugs. It's always neat to be able to enable the bugs for compatibility checking. The VICE emulator has some of them implemented, but that has to be enabled during build/compilation. The bugs of the time of day circuit however seems to be multiple and not extremely well documented.
Anyways, huge fan of your work!

[Plan-C]

Wow! Outstanding work! Next level stuff right there! Just wondering if the.brd files would import into OpenBoardView? That would be great for fault tracing in the future. Keep it up!

[toleranz]

As much as I like these board remakes / replicas I would incorporate 2 modernizations and one or two improvements: 1st a modern powersupply onboard and incorporate a 64 saver type protection circuit so one can simply use an appropriate external 12 to 24 v powerbrick like an laptop psu. 2nd is modern SRAM to replace the dram that is often failing maybe with the option to have an GEO-RAM or 1750 type extension internally. 3rd is the option to choose which type of SID to use by jumper or dipswitch and switchable pal/ntsc option. And las but not least an 1541 / datasette emulator with SD-Card or usb drive for masstorage.

[laurent]

This looks like a lot of work where attention to detail is critical, and you are doing great !
Do you know if there any board version that is supposed to be better than another ? like the designers made some extra effort to have cleaner signals, less noise in the VIC / SID outputs ?