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To those that may not remember this, the KIM-1 was based on the 6502 in the early 70's. What is even more ironic, is that the Apple II that came after, another 6502 machine (one of my favs) was so

Yanno, this is true about that power. Not from the teletype tho. It was noisy but it had that particular kind of sound. To me in the early 70's into my teen years, when I heard that connected up to a

Hi Lee, Oh yea I was lucky, I made that mistake with the sio, so a bit higher, but with the CPU and the keypad (because like Josh with the sio in the middle) I can fit the 2 board stack (cpu/keys) in

Thanks, guys. It's a challenge to design things small; but it also makes it more interesting.:-) Tony used "low" height IC sockets (-001000). The ones I supply with the kits are "ultra-low" height

A modern interpretation & implementation of “cordwood” design … Sent: Wednesday, June 23, 2021 4:19 PM To: [email protected]; [email protected] Subject: Re: [Z80MC] Z80 1st boot (wooot!)

Hi Josh! Those sockets are great. Yea when I made the Keyboard and the CPU I got them correct, but when I reordered the sockets for the SIO I messed up and got the 01000 and the 03000 wrong from

It's like a piece of fine machinery.? If you have ever seen an Intertype or Linotype in action, you'll know what I mean.? Even a 4 stroke engine is pretty remarkable...? parts are all moving in

You have to admit this. The front and back view of the Z80MC looks just so cool!

Yea I bet your right on that Josh. Man remembering those days was always so cool. We were all on the ground floor of something we new would change the world. I didnt spend that much time on the Vax,

I would guess that if ever CP/M could run on a VAX, it would be an emulation.??

Well I have to correct myself again here, lol (man it sucks getting old). I had access to a IMSAI 8080 machine back in 77 and then did some work on a VAX 11/780 machine in late 78. The vax was VMS of

Hi Lee, No problem now. Yes Ive got the classic sn63/37 as well, have been doing this a long time like you. This is one of the orders from mouser I have found that is the problem. I had two shipments

saturn5tony via groups.io wrote: That's really odd. First, because Mouser usually sell pretty new stock. Second, I've never run into a problem soldering them, even with really old ones out of my "gold

Hi Lee, Thank you so much for your reply and kind words. It was a real rookie mistake Lee. Not only new to this connector but new to the type of flux I got from ebay a few months ago too. It was a

saturn5tony via groups.io wrote: Congratulations, Tony! Your build is all the more impressive because you just got the bare boards, and had to source everything else yourself. On the connector

OK Completed the SIO board today! Like the above comment, this is really a great Z80 machine. Here is the finished board as well as the 1st listing entering into C/PM enclosed. So cool to see that

Now here is the CPU and the Font panel display keypad system. Woot #2!! Just finished it today. Had a bit of issues with glitching at 1st even though I did replace the 74LS245 with the 74HC245 I

I think thats why I love all the stuff Lee (and you) have done here. When I was 13 I got some kits from Heathkit (and Eico) and I think that was so wonderful to do and explore. I knew crap about

Tony, That's all Lee.? He's big on taking little steps.? He's always going on about grand builds that start at the bottom.? Building modules one at a time, testing them individually then combining

Thanks Josh, Yea it was the Additional Operating details with ZMCv15 ROM you and Lee wrote that really helped alot. I saw how you guys set it up to test only the Z80 card by itself that got it working