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Óscar Toledo G.

@nanochess@mastodon.social

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➀Author
➁IOCCC+JS1K winner
➂Princess Quest in Evercade Intellivision
➃MSX/Atari/CV/Intellivision/SMS game dev
➄Knight of boot sector games
➅IntyBASIC creator

0 Followers

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17 Posts

Joined December 11, 2019

Twitter:

https://twitter.com/nanochess

Website:

https://nanochess.org/

Books:

https://lulu.com/spotlight/nanochess

Posts

Óscar Toledo G. @nanochess@mastodon.social · Jul 30, 2026

Once upon a time when I was barely age 18 I wrote a windowed operating system for a homebrew computer based on the Am29000 processor. I've made an emulator so you can test it

#retro #amd https://nanochess.org/the_am29000_computer.html

nanochess.org

Developing a windowed OS for a homebrew Am29000 computer

History of the development of my windowed operating system for 32-bit Am29000 processors when I was age 18.

Óscar Toledo G. @nanochess@mastodon.social · Jul 20, 2026

After 10 years I finally found how FM instruments are programmed (and instrument data!) into the YM2413 chip used in MSX2+ and Japanese SMS. I've implemented this in CVBasic along an instruments table for use in your games. #retro #retrogaming #msx #sms https://github.com/nanochess/CVBasic/blob/master/examples/fm_instruments.bas

Óscar Toledo G. @nanochess@mastodon.social · Jun 08, 2026

My new article about my Klondike Solitaire game for curses in 5K of C language is now up. #developer #programming https://nanochess.org/klondike_in_c.html

Óscar Toledo G. @nanochess@mastodon.social · Jun 07, 2026

My first draft article for the tier 32-bit fan members is now available in my Ko-Fi https://ko-fi.com/post/New-draft-article-Jun2026-S8C420YEDR

Óscar Toledo G. @nanochess@mastodon.social · Jun 06, 2026

Go to Youtube to see the live streaming of the 29th IOCCC winners announcement. The first winning entry so far is a FORTRAN card reader calculating a black hole! #retro #retrocomputing https://www.youtube.com/live/MoWCwZx1Swc?si=6raC49UyKy6kbanP

mastodon.social

Mastodon

Óscar Toledo G. @nanochess@mastodon.social · Jun 06, 2026

I've updated my Ko-Fi page with member tiers like getting early access to my articles, reading my drafts, or simply supporting my retro work. #retro #retrogaming https://ko-fi.com/nanochess

mastodon.social

Mastodon

Óscar Toledo G. @nanochess@mastodon.social · Jun 05, 2026

I got a nice looking Sigma C64 but it wasn't working. I discovered the PLA enabled all chips at the same time! The bus contention made chips to get really hot! I bought a replacement PLA and I had to change all the RAM chips for BASIC to work. Also repaired some broken lines for cartridge. #retro #retrogaming #c64

mastodon.social

Mastodon

Óscar Toledo G. @nanochess@mastodon.social · May 30, 2026

I finally tested my ECS Extended BASIC language with an Aquarius Data Recorder and a real cassette tape. It works just fine 😀✌️ #retro #retrogaming #mattel #intellivision

mastodon.social

Mastodon

Óscar Toledo G. @nanochess@mastodon.social · May 22, 2026

I've these in the collected volumes but always wanted to get the original magazines for these issues of Dr. Dobb's Journal. Steve Wozniak writing games and Landon Curt Noll (way before the IOCCC) announcing the discovery of the 26th Mersenne prime. #retro #magazines

mastodon.social

Mastodon

Óscar Toledo G. @nanochess@mastodon.social · May 21, 2026

So Gen V made a Doctor Kay and they just ran around doing nothing in The Boys? 😂 😂 😂 The weakest season with lots of holes (V1, old heroes), wasted characters, and some terrible perfomances. The final fight is reasonable, but it doesn't push you to the edge like previous seasons. #theboys

Óscar Toledo G. @nanochess@mastodon.social · May 21, 2026

I wanted the power led working in my Atari 600XL so I bought a new membrane from Retro Fuzion. The installation is relatively easy and now it works! The original membrane is oxidized. #retro #retrogaming #atari

mastodon.social

Mastodon

Óscar Toledo G. @nanochess@mastodon.social · Apr 08, 2026

A guy ported Mac OS X to Wii https://bryankeller.github.io/2026/04/08/porting-mac-os-x-nintendo-wii.html

Bryan Keller’s Dev Blog

Porting Mac OS X to the Nintendo Wii

Mac OS X 10.0 (Cheetah) running natively on the Nintendo Wii

Óscar Toledo G. @nanochess@mastodon.social · Apr 04, 2026

Ya estamos en Plaza Galerías Estrellas de 11am a 8pm. #retro #retrogaming #atari #Commodore #nes

mastodon.social

Mastodon

Óscar Toledo G. @nanochess@mastodon.social · Mar 30, 2026

Replying to @nanochess@mastodon.social

My own article gave me an idea on how to optimize the 6502 16-bit multiplication with 28% speed-up, and the calling code speed is enhanced as well. Available in the CVBasic repository https://github.com/nanochess/CVBasic

Óscar Toledo G. @nanochess@mastodon.social · Mar 27, 2026

8-bit optimization for Z80 and 6502 in 2026. Multiplication and division routines #retro #retrogaming #z80 #6502 https://nanochess.org/article_8_bit_optimization.html

mastodon.social

Mastodon

Óscar Toledo G. @nanochess@mastodon.social · Feb 24, 2026

I just got my copy of Frenzy: The ColecoVision Games That Brought the Arcade Home by Jamie Lendino (senior writer of the defunct PC Magazine). I'm loving it! #retro #retrogaming #books #colecovision https://a.co/d/052vbvpd

mastodon.social

Mastodon

Óscar Toledo G. @nanochess@mastodon.social · Jan 16, 2026

Replying to @leekelleher@mastodon.social

@leekelleher@mastodon.social @VOLEwtf@crispsandwi.ch Nice!

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Óscar Toledo G.

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Developing a windowed OS for a homebrew Am29000 computer

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Porting Mac OS X to the Nintendo Wii

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