My project for RC2019/03 is to write a chip tune player for the Tandy Color Computer (CoCo) that utilizes the SN76489 chip on the Game Master Cartridge (GMC). This is not a tool for creation but a utility for consumption. So, what will it consume?
VGM Files
The VGM file format is …
It’s RetroChallenge time once again! In fact, we are already five days into the contest, and I still haven’t posted a “start” entry. I reckon it is time to fix that…
Project Description
I’m going to work on a Tandy Color Computer (CoCo) project that enables the use of the CoCo’s Game …
In the previous post, I explained the difference of intent between “logical” and “arithmetic” shift operations in assembly language. I also demonstrated that for two’s complement binary numbers, the bitwise effects of logical-shift-left and arithmetic-shift-left are actually identical. This makes the choice to implement a single physical instruction that covers …
Recently I was listening to a retrocomputing-themed podcast, as I am often wont to do… This particular podcast has a recurring segment wherein a game developer from the good old days is presenting some relatively simple lessons on programming in assembly language for the Motorola 6809. This particular lesson was …
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