New on the blog this week: last week I was playing in BASIC, but this week I take as direct command of the TMS9918 VDP as possible (via the BIOSless SG-1000) to put the graphics chip through all of its paces at the level of registers and VRAM.
There's a lot about the official datasheet I don't like, and I wrote this to be my new one-stop shop for the chip.
https://bumbershootsoft.wordpress.com/2025/09/13/programming-the-tms9918a-video-display-processor/
New on the blog: messing around in MSX-BASIC to actually use all of the graphics modes the MSX1 (and thus the TI-99/4A, ColecoVision/ADAM, SG-1000, etc etc) provides.
There's a lot here. I think it might well have been unchallenged best-of-breed until the C64's VIC-II in 1982.
https://bumbershootsoft.wordpress.com/2025/09/06/exploring-the-tms9918s-graphics-modes/
All the 12 tracks are in place.
Need to add extended play and gameover!
#retrogaming #coleco #homebrew #indiegames #indiedev #colecodev #pvcollib #sprintracing
Every day, a new feature is added.
1st try of modern graphics for Sprint Racing!
#retrogaming #coleco #homebrew #indiegames #indiedev #colecodev #pvcollib #sprintracing
🛠️ Title: Gearcoleco
🦊️ What's: A libre & very accurate Colecovision emulator
🏡️ -
🐣️ https://github.com/drhelius/Gearcoleco
🔖 #LinuxEmulation #Coleco #Colecovision #BIOSROMRequired
📦️ #Libre #Bin #Arch #Snap
📕️ https://lebottinlinux.vps.a-lec.org/LO.html
🥁️ Update: 1.5.3
⚗️ Signific. vers.:1x💎1x🪛️1x🚀️(..)x🐞️
📌️ Changes: https://github.com/drhelius/Gearcoleco/releases
🦣️ From: 🛜️ https://github.com/drhelius/Gearcoleco/releases.atom
🦝️1.0 https://www.youtube.com/embed/g3JQP6Ivx9k
🎮️ https://www.youtube.com/embed/j9zuEDxmQ2s
🎮️ https://www.youtube.com/embed/Arz6Kmn1uyg
🎮️ https://www.youtube.com/embed/6FBPuOtviX8
Segunda do Sávio: O Kid Vid Videogame System.
https://retropolis.com.br/2025/08/25/segunda-do-savio-o-kid-vid/
#MundoRetro #Coleco #ColecoGemini #colecovision #KidVidVideogameSystem #MduloDeSom #Prottipo #RalphBaer #SegundaDoSvio #TheBerenstainBears #VCS2600 #videogame
Nosso amigo Marcelo Sávio continua nos brindando com textões sobre consoles desconhecidos, e agora ele nos traz a história do Kid Vid Videogame System. Em Setembro de 1983, a revista oficial da Coleco - chamada “ColecoVision Experience” - anunciou a chegada do Kid Vid, um videogame falante com jogos voltados ao público infantil. O idealizador
I just add race mode! I need to tune it of course ;)
UP & DOWN to change gear, LEFT & RIGHT to move wheel.
https://youtu.be/damhhCPh28c
#retrogaming #coleco #homebrew #indiegames #indiedev #colecodev #pvcollib #sprintracing
New on the blog: digging deeper into the ColecoVision firmware to see what it offered my little starter project and to see what else it made available. It's surprisingly featureful for 1982.
https://bumbershootsoft.wordpress.com/2025/08/23/colecovision-the-shooting-gallery-platform-layer/
AlekMaul
McMartin
Le Bottin des Jeux Linux
Retrópolis