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Martin_H
PostPosted: Mon Jul 15, 2019 12:09 pm 
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Ben Eater is a YouTuber who builds circuits out of TTL logic. His recent set of videos is building a VGA card from scratch. It outputs 64 colors in a 200x600 grid:

Part 1 https://youtu.be/l7rce6IQDWs
Part 2 https://youtu.be/uqY3FMuMuRo

He also did an excellent set of videos on CRC's in software and hardware that is also worth viewing.
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cbmeeks
PostPosted: Mon Jul 15, 2019 1:18 pm 
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I love Ben Eater's videos. The last two on a VGA card were great as well.

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Oneironaut
PostPosted: Wed Jul 17, 2019 2:52 am 
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Location: Gillies, Ontario, Canada
Nice project!

Brad
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DerTrueForce
PostPosted: Wed Jul 17, 2019 9:37 am 
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Location: Australia
It might only be the output stage of a video card, but it's still useful to someone looking to do VGA output. The memory might become a bit of a pain, but it's still quite respectable for something built on a breadboard, and it illustrates just how simple the business end of an old-ish GPU really is, and how the spec can be used to produce somewhat non-standard resolutions.
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jmthompson
PostPosted: Sat Aug 03, 2019 12:08 am 
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i watched those videos a couple weeks ago, and then went through more of his catalog. His series on building a computer from discrete logic parts was fantastic, and his breadboard wiring puts mine to shame. In fact he is part of the reason why i just tore down my entire breadboard SBC build so that I can rewire it. :)
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barrym95838
PostPosted: Sat Aug 03, 2019 1:30 am 
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I "like" how he manages to eyeball the 90° bends and lengths for his wires perfectly off-screen. He is either a savant of the highest order, or he's just showing us the result of hours of careful preparation. I don't have any evidence to disprove the former, but I'm definitely leaning toward the latter.

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Oneironaut
PostPosted: Sat Aug 03, 2019 1:39 am 
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I vote for "hours of practice".
No, let me correct that...
"days or weeks of practice".

Brad

barrym95838 wrote:
I "like" how he manages to eyeball the 90° bends and lengths for his wires perfectly off-screen. He is either a savant of the highest order, or he's just showing us the result of hours of careful preparation. I don't have any evidence to disprove the former, but I'm definitely leaning toward the latter.
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Chromatix
PostPosted: Mon Aug 05, 2019 6:38 pm 
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He's most likely prepared labelled trays full of bent wires of specific lengths. Then he only need to reach into the correct tray.
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Jeff_Birt
PostPosted: Mon Aug 05, 2019 8:08 pm 
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It is not that difficult to cut and bend wires. It just takes some practice, pliers and wire stripper.
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cbmeeks
PostPosted: Tue Aug 06, 2019 1:00 pm 
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barrym95838 wrote:
I "like" how he manages to eyeball the 90° bends and lengths for his wires perfectly off-screen. He is either a savant of the highest order, or he's just showing us the result of hours of careful preparation. I don't have any evidence to disprove the former, but I'm definitely leaning toward the latter.


Either way, his devotion and production values are amazing.

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thedrip
PostPosted: Sat Sep 14, 2019 9:21 pm 
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Ben Eater's latest video is taking on a 6502 directly.

https://www.youtube.com/watch?v=LnzuMJLZRdU
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BigEd
PostPosted: Sun Sep 15, 2019 8:49 am 
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Nice - I've started a new thread here.
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