RetroChallenge 2024/10 reflections

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 enjoyment and to learn something - about the subject matter, ourselves or both. So I want to answer the "why"…

Pico MZ-80K software tests

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)NotesBASIC SP-5025Supplied with the Sharp MZ-80K as standard. Works as expected. The programs in this table were all written for this dialect of BASIC.BackgammonDistributed by Knight's Computers…

RetroChallenge 2022/10 - Final reflections

First things first - how far did I get against my original aims? So I'm going to award myself a B minus for progress. Could have done better. A little more about Version 6. The final few days of the challenge were all about finding ways of taking 16K of…

RetroChallenge 2022/10 - Progress log

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 bugs out. The ones I've found so far have been largely concerned with calculating screen positions (the original game assumes…

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

RetroChallenge 2022/10 - Project aims

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 by the wayside since. The RetroChallenge seems an ideal opportunity to start this project again. No cheating – everything will…