With a Cherry On The Side – Episode One

It's kinda strange to be doing this in April instead of January, but as the RetroChallenge schedule has changed, it is time to get my plan together. Inspired by previous attempts, my modest entry to RetroChallenge this time is to interface a PS/2 keyboard to a 1987-vintage 68hc11 micro-controller; enough to at least read the … Continue reading With a Cherry On The Side – Episode One

Moving Targets Under Your Feet

An interesting (but unfortunate) situation with many softwares for Windows has come to my attention recently - a lack of control over development environments and packaging kits... There is still a lot of independant software out there that claims quite proudly to eg: "run on Windows XP, Vista, 7, 8 and 10". Unfortunately, much of … Continue reading Moving Targets Under Your Feet

Maxwells’ Silver Doofer: Dead in the Water

Count this as the biggest of big fails for Retrochallenge 01/2016... Maxwells' Silver Doofer just never really got going. January was way too busy with massive amounts of commercial overtime, attempting to swim a distance equivalent to a lap of the TT course (for charitable porpoises), sorting out personal tax affairs (jeez, the govt make the … Continue reading Maxwells’ Silver Doofer: Dead in the Water

Maxwells’ Silver Doofer: Episode 2: Reasonable Gratuitous Incompatibility

The Idris Users Manual is a tutorial-plus-reference-manual for "plain-old" users of an Idris system: Excellent tutorials on logging-in, how to enter commands, use of files and directories, text-editing, using the command-shell, and so on; plus reference manpages for the commmand-line programs, specific file-formats (password file, /dev/null, timezone, login-history file, mounted-filesystems list-file, etc); plus a system-administration … Continue reading Maxwells’ Silver Doofer: Episode 2: Reasonable Gratuitous Incompatibility

Maxwells’ Silver Doofer: Episode 1: How Not to Start a Project

Sheesh! January so far has been insanely busy with overtime at work, and if you add in the start of the Mens' hockey season and the first Firemans' Run of 2016, I am turning up a little late to this months' Retrochallenge event. My original intent was to get started 10 minutes after the start … Continue reading Maxwells’ Silver Doofer: Episode 1: How Not to Start a Project

Small Things Come In Big Packages

During December 2015, Digi-Key Electronics have been running a Christmas Draw; by posting to Twitter or Facebook with an appropriate keyword ("#DigiWish"), you can wish for parts from their catalog, and if you are drawn out of the hat, Digi-Key would gift them to you for no charge and with free delivery. Of course, to … Continue reading Small Things Come In Big Packages

Maxwells’ Silver Doofer: Crass-Compiling

Once more unto the breach: Retrochallenge 2016/01 draws near and it is time to decide what my entry project should be. Icebergs: This time it is really hard to decide what on Earth to do - as outlined previously, the "Galaxy Pressed" project is just too expensive (although there has been a recent post on … Continue reading Maxwells’ Silver Doofer: Crass-Compiling

Evie Beer: Episode 9 – Doh! and Happy Ending

As we saw last time, I had been having trouble getting meaningful measurements of joystick position using the ADC. It only goes to show few many readers this blog has, because the circuit diagram showed exactly what the problem was, quite clearly, yet no-one commented! And of course all that impedance-limit waffle I spouted last … Continue reading Evie Beer: Episode 9 – Doh! and Happy Ending

Evie Beer: Episode 8 – RTFM!

This time, we're looking at the built-in analogue-to-digital convertor on the 68hc11. In principle, this should be quite easy, but in practice there turned out to be some caveats. First problem was that I had assumed that the breakout connector on the evaluation board SBC had port E wired in the same sequence as ports … Continue reading Evie Beer: Episode 8 – RTFM!