Category: Retrochallenge

RetroChallenge 2024/10 reflections

Posted on 31 October 202412 November 2024 by Tim

I started this year’s project with a challenge from an old Sharp Users Club magazine. “Who on earth would want to emulate an MZ-80K … ?” We do hobbies for

Pico MZ-80K software tests

Posted on 26 October 20248 April 2026 by Tim

As part of RetroChallenge 2024/10, I’m testing some old (and not so old) software on my Raspberry Pico MZ-80K emulator. BASIC programs (and link) Notes BASIC SP-5025 Supplied with the

RetroChallenge 2022/10 – Final reflections

Posted on 2 November 20225 November 2022 by Tim

First things first – how far did I get against my original aims? Primary aim: An implementation of “The Valley” for the Compukit UK101 – starting with the FPGA hardware

RetroChallenge 2022/10 – Progress log

Posted on 4 October 20222 November 2022 by Tim

4th October 2022 I think I’ve finished typing! (The printout is around 14 A4 pages). I need to play the game over the next couple of days to iron the

The Valley - Swamp scene on the Sharp MZ-80K

RetroChallenge 2022/10 – Project aims

Posted on 27 September 20222 November 2022 by Tim

My aim: A re-implementation from scratch of “The Valley“, as published in Computing Today magazine, April 1982. I originally started working on this during August, but the project has fallen

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