Oh, you just slapped a 1MB image on your web page? That’s nice.

Back in the day, folks were hiding running code and data in the graphics of their games that had to fit into 22KB.

revs.bbcelite.com/deep_dives/h…

#BBCMicro #games #rev #dev

It's finished! The Sentinel, Geoff Crammond's epic game, is now fully documented at thesentinel.bbcelite.com

* 41,902 lines of lovingly annotated source code

* 51 deep dives (116,240 words)

* Fully buildable code repository

* 100% handcrafted AI-free content

* 7 months’ work

If you have enjoyed this project, you might like my other software archaeology projects at bbcelite.com

* Elite on the 6502

* Aviator on the BBC Micro

* Revs on the BBC Micro

* Lander on the Acorn Archimedes

Time for a new project now… after a bit of a break. See you soon!

#retrocomputing #C64 #BBCMicro

Yep, it’s been half an hour and no dropouts… I’m calling it, my lovely new BBC Micro B is fixed :)

Yay! Soooo excited to play with it tomorrow 🥳

Here’s a before video:
vimeo.com/1181523949#t=26

And an after:
vimeo.com/1182284426

And the issue, for anyone else who stumbles on this thread, was the 16MHz oscillator circuit (marked X1 on the main board).

Also, I could only find a lot of 50 of them, so if anyone needs one, just hit me up and I’ll send it to you :)

Huge thanks to the folks on the stardot.org.uk for sharing the fix: stardot.org.uk/forums/viewtopi…

#BBCMicro #BBCMicroModelB #video #dropout #issue #fix #x1 #oscillator

Fault finding index - Page 4

A frequent post topic on STH , and indeed all similar retro forums, is where someone has a hardware fault and is asking for advice on how to go about fixing

^{MartinB (stardot.org.uk)}

Note, if you will, the beauty of this design:

There are seven places where the power supply attaches to the main board but there’s no way you can get it wrong as the lengths of the wire won’t let you. (You still have to know black is 0v.)

#BBCMicro #repair

So mine’s apparently an Issue 4 from 1982. Although there’s a sticker in it that reads 1 Nov 83 (maybe when it was sold/serviced?)

The board’s out and yes, I was a bit of a barbarian and, since I’m not going to be using the composite out, cut the wires to it instead of desoldering them. If I ever need it, I can just connect the wires again.

Now the bit that scares me…

#BBCMicro
#repair

Wish me the luck, the little guy’s going under the knife… the video signal cuts out intermittently so I’m going to try changing the 16MHz oscillating crystal.

🤞

#BBCMicro

Oooooh, guess what just arrived 😍

#BBCMicro