HBC-56: The first 12 months

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A montage of mostly unreleased footage covering the development of my HBC-56 homebrew 65C02/TMS9918A computer from breadboards to custom proto boards to custom PCBs.
Thanks to PCBWay: pcbway.com/g/186WQ9
HBC-56 on GitHub: github.com/visrealm/hbc-56
HBC-56 on Hackaday: hackaday.io/project/180904-hbc-56-65c02-tms9918a-on-a-backplane
Song: Nekzlo - Family (Vlog No Copyright Music)
Music promoted by Vlog No Copyright Music.
Video Link: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-IRLX9MzirfM.html
#8bit #6502 #tms9918 #beneater #pcbway

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Опубликовано:

1 июн 2022

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Комментарии : 25

@rehsd 2 года назад

It's so cool to see the evolution of your work!

@TroySchrapel 2 года назад

Thanks. My soldering has certainly improved in that time. 😂

@lockymcgee6525 2 года назад

Super cool to see how this started. So many small steps to end up with what you have today. Nice work Troy.

@TroySchrapel 2 года назад

Thanks, Locky.

@derekchristenson5711 2 года назад

Very nice! A well-paced montage of system development. 🙂

@6502Nerd 2 года назад

Totally fab job.. we both independently made a 6502 based MSX kind of machine!🤓👍🏽👏🏽👏🏽 I wrote a fast integer language for mine with lots of graphics commands.. might be portable to your machine one day!

@TroySchrapel 2 года назад

Thanks. Sounds cool. Is the code available?

@TroySchrapel 2 года назад

Had a look at your D flat demos. They look fantastic. Nice work.

@johnwilson3918 2 года назад

Love it! From disorder to a very neat project. I'm still very much at the disordered stage. I have designed TTL computer with 80 odd instructions - got fed up with soldering and so decided to 'build' it on an FPGA.

@TroySchrapel 2 года назад

Thanks. Nice one! I have built a breadboard CPU too - got it to run Snake. I haven't ventured into FPGA's yet, but I'm very keen to try... soon! :)

@gliderspace 2 года назад

Hey mate, how can I buy this entire kit (backboard and all boards) assembled and working?

@coxsj 2 года назад

Brilliant! thx for sharing!!

@jacquesy2520 2 года назад

wow, the TMS9918 actually looks really capable!

@TroySchrapel 2 года назад

Once you work around its quirks, it's quite capable, yeah.

@kevinhart68 2 года назад

Hey Troy - re the sound card and the ay-3-8910. Every video I've seen / article I've read suggests connecting the ay-3-8910 via a 6522 due to the speed of the PSG. This then makes programming the PSG cumbersome. . A video explaining the sound card design / decode logic (especially with a focus on the GAL / PLD) plus any possible timing issues you had to overcome would be very usful. Thanks

@TroySchrapel 2 года назад

Sure. I'll get there eventually. 😁 I haven't had any issues up to 4MHz CPU clock.

@av8r907 2 года назад

love it. are you going to sell kits?

@TroySchrapel 2 года назад

Thanks. I don't think so. But, never say never I guess... Everything will be in the GitHub repo, so anyone would be able to build their own that way. Or, port my software to their builds.

@timyg 2 года назад

Wish I was able to do that lol, But amazing! loved watching your progress

@TroySchrapel 2 года назад

I'll bet you could. Start small. One thing leads to another...

@lockymcgee6525 2 года назад

Just watched this again. How did you mount that ROM socket on the breadboard?

@TroySchrapel 2 года назад

Using a dodgy stack of pin headers. Turned pin headers first, then female dupont headers plugged into that, then the ZIF socket plugged into that. Super sketch, but worked pretty well.

@alexruedi1995 2 года назад

this is really impressive. this reminds me of: any sufficiently advanced technology is indistinguishable from magic. imagine the same but with some sci-fi-like parts.. like if it drives some transparent oled