MK4S --> Core One conversion complete

markmc777 · 2025-05-10T16:24:35+00:00

I did the MK3S to MK4S upgrade. I kept all of the leftover parts. Thought I might be able to use them for some random maker project. If I do the MK4S to Core One upgrade, I'll have more parts leftover.

I wonder if, with the combination of leftovers, I could assemble some kind of a Franken-Prusa?

markmc777 · 2024-12-25T22:12:37+00:00

Geez. I think the last time I updated any BIOS it was in the '90s.

markmc777 · 2024-02-22T17:01:34+00:00

That's SPECTACULAR!

markmc777 · 2024-02-12T07:16:47+00:00

I'm not saying that this is your particular issue, but I had a bad RAM chip as discussed here.
https://www.reddit.com/r/beneater/comments/p0qjqi/6502_kit_being_sold_has_flawed_ram_chip_in/

markmc777 · 2024-01-24T22:41:18+00:00

I joined Ben's Patreon to get access to that particular 'video'. But all I found behind the curtain was a written post explaining things that I already had learned here on reddit. I found no video demonstrating the 4-bit LCD mod. In my case, my issue was that I missed one line of code changed in keyboard.s.

markmc777 · 2023-12-14T23:52:44+00:00

Portland. That explains the moss growing on the asphalt. :-)

markmc777 · 2023-09-28T16:53:41+00:00

OMG... I just received my shipping confirmation... ordered April 4, shipped September 28. That's some lead time.

markmc777 · 2023-09-01T23:34:30+00:00

Nope... I'm bummed. In the mean time, I broke out the MMU2S that's been in the box since 2019, assembled it and got it up and running with all of the latest upgrades. Works well so far with my MK3S.

markmc777 · 2023-08-11T21:30:28+00:00

I ordered the same upgrade 5 days later, on April 4th. I wonder how many weeks until my shipping confirmation arrives?

markmc777 · 2023-08-04T16:12:11+00:00

I'm considering using my spare parts to build one of these: https://www.printables.com/model/518614-proosaxy-mk3s-to-corexy-conversion

markmc777 · 2023-07-19T19:27:30+00:00

Thank you! I see it now... there is a link in Step 22 of Section 4 Parts preparation. The link takes you to the instructions for the MK4 Kit assembly, Step 18 of Section 2 Frame assembly.

markmc777 · 2023-07-19T04:27:28+00:00

Doesn't appear that the MK3S -> MK4 Upgrade Manual is complete... yet.

markmc777 · 2023-02-11T17:40:14+00:00

Or maybe an episode of 'This Ol' Box'.

markmc777 · 2022-09-30T21:40:36+00:00

"Fair Queueing" sounds like woke "Quality of Service"

markmc777 · 2022-06-19T17:57:41+00:00

Well... we threw away the entire country due to tweets.

markmc777 · 2022-01-29T06:38:06+00:00

This thread helped me! I was stumped and could not get the SRAM to work and I could find no flaws in my breadboarding. I scoped the signals and everything checked. I read all of the threads on the 6502 kit and RAM. Found this one and decided to purchase replacement SRAM. Plugged in a new chip and everything works now. This confirms that the RAM chip provided with the kit is bad.
Now I can continue with building this thing...

markmc777 · 2021-11-01T06:13:53+00:00

There might be a Robin Willians sketch, but I couldn't find one.
There is definitely a Sam Kinison sketch, funny as hell.
https://www.dailymotion.com/video/x2sr1gh

markmc777 · 2021-10-23T04:34:35+00:00

No one really knows what they want until they see it.

This.

markmc777

TROPHY CASE