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Writing assembly language subroutines for Extended Color BASIC

20 points

by ingve

1 year ago

| past

| 3 comments

| boston.conman.org

| HN

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WesBrownSQL

1 year ago

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I also still have the books and a CoCo 3. When everyone else I knew either had a c64 or an appleII I was on my own and just had to push through. I started with a CoCo II then UPGRADED to a CoCo III, that's how much I loved that machine. The only other friend I had that was also left out in the cold had an Atari 400. Poor kid asked for an Atari for Christmas thinking he would get a 2600 and instead got that brick ;)

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wormius

1 year ago

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I still have my Color BASIC & Extended Color BASIC books. I have lost all my shit in storage, but I have the CoCo I with the II "upgrade" (16->32k ram, and removing the chiclet keys for the curved ones). We had tons of cassettes and I wanted to donate to archive, but unable to find them now :( I'm worried it's too late with deterioration issues of magnetic media.

I was too young to appreciate what coding was, I could type in programs but had no real understanding of DIM. I thought it was cool that they had a memory map graph in the books to help you program images - you could literally see the array layouts IIRC.

I definitely wouldn't have understood assembly at that age.

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Mountain_Skies

1 year ago

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Do you mean the Color Computer Archive or the Internet Archive? If it's the former, they might already have much of what were on your missing cassettes.

https://colorcomputerarchive.com/

Not understanding the programs I was typing in from 'The Rainbow' and other sources was quite the source of frustration when I first started out, especially if I typed something wrong or the listing contained an error as I wouldn't understand how to debug it, but over time it eventually taught me a lot about programming.

There's a YouTube channel called 'CocoTown' that's going through creating a Moon Patrol clone in 6809 assembly on the CoCo. I've learned quite a bit from watching those videos.

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HeyLaughingBoy

1 year ago

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This is for the CoCo 3? I had a friend whose senior project was a game engine for the CoCo3 written in 6809 assembly. Wonder what happened to him?

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spc476

1 year ago

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It would probably work for a Coco3, as the Color BASIC and Extended Color BASIC ROMS didn't change much (there was an additional ROM to support the extra graphics modes).