How I got my own design for a Z80 CPU tester wrong and ended up just building someone else's instead.
Stil at least I now know how and why they work :)
https://emalliab.wordpress.com/2026/05/10/z80-cpu-tester-fail/
Music, software, electronics, maker, art, books, writing, kids. geek, dad, engineer, blogger, musician. I only follow what I think I can keep up with.
Music related making: @diyelectromusic
| Website | https://emalliab.wordpress.com/about |
| Pronouns | He/Him |
How I got my own design for a Z80 CPU tester wrong and ended up just building someone else's instead.
Stil at least I now know how and why they work :)
https://emalliab.wordpress.com/2026/05/10/z80-cpu-tester-fail/
Remaking the PDS target boards for the ZX Spectrum and Amstrad CPC (maybe - I really could do with someone who knows what they're doing checking them over :)).
https://emalliab.wordpress.com/2026/05/08/pds-the-programmers-development-system-part-3/
#RetroComputing #PDS #ProgrammersDevelopmentSystem #ZXSpectrum #AmstradCPC
Digging a bit deeper into the PC ISA card for the PDS.
https://emalliab.wordpress.com/2026/05/06/pds-the-programmers-development-system-part-2/
Getting to know the Programmers Development System from the 1980s for 8-bit computers...
https://emalliab.wordpress.com/2026/05/04/pds-the-programmers-development-system/
Powering up the #EasyZ80 for the first time...
Full details here: https://emalliab.wordpress.com/2026/04/16/easy-z80-sbc/
And now with a simple example...
https://emalliab.wordpress.com/2026/04/06/pio-on-the-raspberry-pi-pico-part-2/
I'm finally attempting to properly get my head around the Raspberry Pi Pico programmable IO (PIO).
https://emalliab.wordpress.com/2026/04/02/pio-on-the-raspberry-pi-pico/
Driving a cheap 256 LED SMD matrix surface mount soldering practice kit from an arduino.
https://emalliab.wordpress.com/2026/02/16/256-led-smd-practice-board/
Testing a Cheap SMD Practice LED Matrix Kit