A 6502 Based Computer on a Single Breadboard

In this video I build a complete 6502 based computer on one breadboard using the 28 pin 6502 version, the 6507.

In the next video I show how you can use #i2c to control thousands of different peripherals - and make an Arduino-like PCB for it!

My mentioned videos:

Credits:

Fair use clips from "Close Encounters of the Third Kind - 1977, renewed 2005, 1980, 1998 Columbia Pictures Industries, Inc. All Rights Reserved."

Atari 2600 photo
Evan-Amos, Public domain, via Wikimedia Commons

[AndersNielsenAA]

UPDATE: WOW! 30K and 1100 likes! Thank you!!!

[TheGamingComputerBomb]

Oh, so this is what a single board computer is.

[dagobertkrikelin]

I've never heard of the 6507 - and I'm old! :)

[GregStrike]

I've never used those Riot chips before but they seem interesting! Thanks Anders!

[bzoli]

As you said the 555 IC can blink a LED, but with the button shorted a resistor in the timing circuit the 555 IC also can do what your program does, two different blinking rate. But for example blinking an SOS Morse code is not possible with the 555 IC but you can code it in your 6502 based program. Sorry for my poor English.

[RistarteYoshiCH]

Thank you for making this vid! The RIOT is truly a lifesaver chip in this case xD. I also got inspired by your 65uino project and is in the process of making something similar except with a 6502 40dip. I guess it'll be more similar to Ben Eater's 6502 but Uno-sized.

[vanhetgoor]

Don Lancaster was a wise man, it was nice that you quoted him.

[HansOtten]

A 6532 based 6502 system is so simple! My compliments for this video and design!
Would a larger 6502 and a smaller 28C16/64 EEPROM be possible too? 6507 are rare nowadays.

[petermuller]

Great video, especially leaving in the debugging part.

This is an interesting take on the 6502 breadboard PC :)

[Chleosl]

Me: can we have Apple 1 at home?
Steve:

[Barnaclebeard]

Darn near got a 2600 on a breadboard, there.

[GodmanchesterGoblin]

Neat. Of course, with only 4k bytes accessible in the ROM due to the limited address space and simple decoding, you could have saved two more pins in breadboard length by going truly retro and using a 2532 EPROM instead of the 27512 monster. 😀

[AngelMcDove]

It's funny how the random numbers for ICs won't make sense if you don't have electronics experience.

[ipebyx]

You can insert TIA on second breadboard and you will have working A2600

[prometheus]

Big Apple II vibes, or a modern version of the Heathkit MCU kit (although 68000 based)

[MikeKLH]

Thank you for another nice video, Anders. Can you add a schematic in PDF format on your GITHUB, please?

[JarppaGuru]

rom and ram pinout is same you can stack them and bend 1 or 2 pins to make them work. better do it for ram

[melanierhianna]

The Atari 2600's only built in RAM was 2 RIOTs. 64 bytes for page zero and 64 bytes for stack.

[NicoDsSBCs]

I'd like to review this SBC. But not sure if the browser video playback would be good enough for my subscribers 😅And can it play Xonotic?
Nice job to get this working. My hat goes off. Greetings.

[MostlyPennyCat]

Doesn't that make this an Atari 2600?