Updated 2018–10–08

A demo for the IBM PCjr by Pungas de Villa Martelli. It was presented at Flashparty 2018 and won the Demo category.

Requirements

An IBM PCjr with at least 64k RAM.

Download

• Source code: https://gitlab.com/ricardoquesada/pcjr-flashparty–2018
• Binary:pvm-64ko.zip (does not run on emulators)

Technical description

The demo is divided in the boot loader and demo 3 parts

Boot loader

The demo is intended to work with a 64K RAM (or more) PCjr. Booting from its own boot loader is needed to save precious memory. DOS alone takes ~20K of RAM. That is 30% of the total memory. You don’t want to waste that memory.

Continue reading “64K RAM Ought to be Enough: a demo for the PCjr” →