Tweet to the BBC Micro Bot, get a video of your code running! #BBCMicro #VintageComputing @DominicPajak

8bitkick.cc hosts a marvelous BBC Micro Model B emulator named BBC Micro Bot. Using it could not be easier: Send a tweet to @bbcmicrobot and it will run it on a 1980s 8-bit computer emulator!

This bot runs a full emulation of the BBC Micro Model B – a computer standard in schools in the UK during the 1980s. There is a lot more you can do with it!

BBC BASIC

The BBC Micro Model B emulator used by the bot is running BBC BASIC II (1982). If you’ve never tried BBC BASIC checking out the examples on the @bbcmicrobot Twitter account is a good place to start.

The program graphic above is by Neil and uses abbreviated (minification) commands. so the actual code looks like:

0a=1305:DIMX(35),Y(35):F.I=0TO35:A=I*PI/18:X(I)=375*SINA:Y(I)=300*COSA:
N.:MO.2:V.29,640;512;23,0,8202;0;0;0;:REP.U.FNA(FNA(FNA(1))) 
1DEFFNA(N):F.I=0TO11:F.O=0TON:V.18,3,1-(N-1)*(I 
MOD7),1049;X(I);Y(I);a;X(I+12);Y(I+12);a;X(I+24);Y(I+24);a;X(I);Y(I);:N.,:=0

But you can get started by tweeting:

10 MODE 2
20 COLOUR RND(7)
30 PRINT "HELLO WORLD"
40 GOTO 20

The bot generates a 3 second, 50fps mp4 after 30 seconds of emulated execution time. If you’re curious you might have noticed the Acornsoft Graphics Extension ROM is installed on the emulated machine. The bot also has a pretty strict filter for bad words and blocks offenders immediately, because printing rude words in infinite loops looks a lot like spam to Twitter!

Check the bot out by tweeting to @bbcmicrobot and see the web page here.

If you’d like to get up to speed on BBC BASIC, check out:

  • Learn to write games for the BBC Micro with Eben | blog
  • BBC Micro User Guide html | PDF
  • 8BS.com’s huge collection of BBC BASIC books


8-6-2021 (August 6, 2021) is the Snakiest day of the year and it’s also this year’s CircuitPython Day! The day highlights all things CircuitPython and Python on Hardware. See you there!

Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Join 30,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

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CircuitPython – The easiest way to program microcontrollers – CircuitPython.org


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Electronics — Hummm… 60Hz noise in your amplifier driving you nuts?

Python for Microcontrollers — Python on Microcontrollers Newsletter: EuroPython 2021, CircuitPython 7.0.0 alpha 5 and more! #Python #Adafruit #CircuitPython @micropython @ThePSF

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