Articles by Glen's Weblog

While working on my BASIC to 6809 Compiler, I’ve been trying to optimize the code as much as possible. Nothing ground breaking here but I thought I’d share this little trick I came up with for copying 8 bytes of … Continue reading → …

I wrote a compiler for the TRS-80 Color Computer called BasTo6809 for a couple reasons. One is to learn exactly how to parse an expression using recursion and I thought it would be cool to have fast programs. The compiler … Continue reading → …

I’ve been recently toying with the idea of writing a game using the CoCo 3 256 x 200 x 16 colour resolution and I got far enough along to require collision detection of the game sprites. I wrote my own code … Continue reading → …

This article was re-written by ChatGPT 🙂 Introducing Advanced Text Screen Scrolling Solutions for CoCo BASIC Programmers I’m excited to present a versatile tool designed specifically for BASIC programmers working with the CoCo platform. This software facilitates efficient scrolling in … Continue reading → …

Since CoCo’s don’t have dedicated hardware sprites, I started writing my own library to handle this task. So in the future I won’t have to re-write this code again and again. I recently started reverse engineering the Amiga version of … Continue reading → …

I upgraded my CoCo 3 with a 2 Meg upgrade kit from Cloud9 that I picked up at CoCoFest this year. Mark Marlette makes fantastic hardware for the CoCo 3 and has been doing it forever. If you want great … Continue reading → …

I’ve started looking at some MOS 6502 assembly code and I’m in the process of transcoding it to Motorola 6809 assembly. I’ve found an excellent PDF online describing the process of translating programs from the 6502 to the 6809 starting … Continue reading → …

Back in 2017, Ed Snider released a cool video and audio player for the CoCoSDC on a CoCo 1. I thought it was wicked and at that time I remember fighting with the CoCoSDC to try and get some of … Continue reading → …

Hello, I came across a website https://codegolf.stackexchange.com which is a website where people ask others to write programs in any programming language they wish and to make the program as short as possible. I came across what I thought was … Continue reading → …

Hello, it’s been quite awhile since my last blog post, I got tired/burnt out of working on ROBOTRON and I’ve also been doing a lot of home renovations and other life events have kept me from my CoCo hobby. I … Continue reading → …