Apple II

Apple 2’s LOGO!

June 17, 2018 Reddit

Who was addicted to this? I was back in the 80s esp. with my rad teacher named Mr. Mangel (I wonder if he is still alive and a Redditor here). I remember in 6th grade, he had a cabled robotic LOGO turtle that plot on papers on the

Apple II

Spot The Design Error

June 15, 2018 Big Mess o' Wires

A prototype for the latest Star Ring. Q1, Q2, and Q3 use this N-channel MOSFET. The circuit runs from a 3V battery. When one of the transistors is turned on, the six red/green LEDs in the associated row can be turned on or off using six microcontroller outputs. At

Apple II


June 15, 2018 KansasFest

SolderFest is a KansasFest tradition.  Whether you’re a expert at soldering or aren’t sure which end of the iron hold, this evening event is an opportunity to get together, melt metal, swap stories and know-how, build cards, or repair things.

If you own soldering equipment, please bring it.  We’ll have

Apple II

Confessions of a Disk Cracker: the secrets of 4am.

June 15, 2018 Paleotronic Magazine

Why did you choose to start aggressively de-protecting, archiving and re-distributing Apple II software?

It’s tempting to rewrite history and give myself some noble purpose for starting this hobby, but in this case the truth makes for a better story. My parents bought themselves an Apple //e when I

Apple II

Atmel ICE Wiring Horror

June 14, 2018 Big Mess o' Wires

The Atmel ICE programmer/debugger has its SWD connector pins reversed from the standard ARM Cortex debug connector. Arghh… why? It’s the same physical connector (5×2 0.05 inch polarized male), but the pins are rotated 180 degrees from the standard, as if the cable were plugged in backwards. Incredibly, it

Apple II

Collector’s Corner: Care and Cleaning of CDs and Floppies

June 13, 2018 Paleotronic Magazine

First demonstrated at the Consumer Electronics Show in 1982, the Compact Disc was an evolution of the optical LaserDisc format created by Philips and MCA. Philips partnered with Sony to develop the new disc, initially intended for digital audio storage. It met with steady success, eventually supplanting cassette and

Apple II

The PETSCII files: Commodore Character Graphics

June 12, 2018 Paleotronic Magazine

Any computer that was going to use a command line interface desperately needed a character set, and despite their ultimate monstrous graphical capabilities, Commodore’s machines were no exception.

As was usually the case (cf. SHARPSCII, ATASCII) they adopted a flavour of the venerable ASCII character set standard (oddly choosing