How II 0x0E: Beep! Beep!

I take a bit of a different direction this month, and give you an assembly tutorial (very simple assembly, I promise) on making the Apple II beep. Clicking the speaker, a couple of loops, and that’s it – you’re on your way to making music.

Assembly Lines on Amazon.com: http://amzn.to/2qMjk5J
Virtual ][: http://www.virtualii.com/

The music you hear is created using KSynth, a rudimentary two-voice synthesizer for Apple II: https://github.com/option8/ksynth

 

How II 0x07 – Keyboard Repairs, part 2

Following up from episode 0x02, I finally dig into the inner operations of a pair of keyswitches, cleaning and replacing them.

There’s danger! Romance! A shout-out to Dave from the EEVBlog!
(https://www.youtube.com/user/EEVblog)

Also, shameless self-promotion:
https://www.shapeways.com/shops/pressurepen

Tools used:

Multimeter:
(Get a good one) http://amzn.to/1SN1gmL
(or a cheap one) http://amzn.to/1U1h46N

Desoldering iron (solder sucker type):
http://amzn.to/1PjTCxQ