Invader's Revenge reverse-engineering

[bennorth]

Hi,

Thanks to XRoar's Ciaran for pointing me to this site. Great to see all the active development going on with the Dragon, software and hardware. I had one when I was young (some time ago now...) and it was a very important part of how I properly got into computers and programming. Recently I thought it would be a fun project to do a bit of reverse engineering on one of the games I used to play, Invader's Revenge (Ken Kalish). In case it's of interest to anyone here, there's a write-up along with my commented disassembly, and a recreation in an educational coding system I'm working on, here: Invader's Revenge reverse engineering.

Ben.

[robcfg]

Hi Ben, welcome to the Dragon Archive!

You've done a remarkable job with the reverse engineering of Invader's Revenge. I like specially the comments, the different coloured blocks and how you show the embedded graphics.

How do you create such visualization?

Cheers,
Rob