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Óscar Toledo G.

@nanochess@mastodon.social
mastodon 4.8.0-nightly.2026-10-06
  • Open on mastodon.social

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
0 Following
18 Posts
Joined December 11, 2019
Twitter:
https://twitter.com/nanochess
Website:
https://nanochess.org/
Books:
https://lulu.com/spotlight/nanochess
Open post
Óscar Toledo G. @nanochess@mastodon.social
· 1mo ago
My Am29000 Javascript emulator now can run my 1999 operating system, including the web browser. However, because Javascript security restrictions, it cannot access Internet. #retro #amd #developer #javascript #os https://nanochess.org/am29000_emulator.html
Am29000 emulator in Javascript running my 1997 and 1999 operating systems
nanochess.org

Am29000 emulator in Javascript running my 1997 and 1999 operating systems

Am29000 emulator written in Javascript running my operating systems from 1997 and 1999.

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Open post
Óscar Toledo G. @nanochess@mastodon.social
· 2mo ago
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 :awesome: #retro #amd https://nanochess.org/the_am29000_computer.html
Developing a windowed OS for a homebrew Am29000 computer
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.

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Open post
Óscar Toledo G. @nanochess@mastodon.social
· 2w ago
Do you remember my DJGPP port of my transputer C compiler? I thought all the work was done, and maybe I could compile it in a Macbook Air. I was very wrong. Enjoy my trip porting it to 64-bit!!! #retro #transputer https://nanochess.org/transputer_c_compiler.html
Making portable my unportable transputer C compiler
nanochess.org

Making portable my unportable transputer C compiler

History of how I made portable my transputer C compiler to work in modern platforms.

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Open post
Óscar Toledo G. @nanochess@mastodon.social
· 2mo ago
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
GitHub

CVBasic/examples/fm_instruments.bas at master · nanochess/CVBasic

BASIC language compiler for Colecovision, MSX, SG1000/SMS, Spectravideo SVI-318/328, Creativision, Sord M5, Memotech MTX, Tatung Einstein, Casio PV-2000, Hanimex/Soundic Pencil II, and NES/Famicom....

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Open post
Óscar Toledo G. @nanochess@mastodon.social
· 6mo ago

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

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Open post
Óscar Toledo G. @nanochess@mastodon.social
· 4mo ago

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

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Open post
Óscar Toledo G. @nanochess@mastodon.social
· 4mo ago

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

Klondike Solitaire for curses in 5k of C language
nanochess.org

Klondike Solitaire for curses in 5k of C language

How I developed a Klondike Solitaire game for curses in C language as an entry for the IOCCC.

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Open post
Óscar Toledo G. @nanochess@mastodon.social
· 6mo ago
Replying to
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
GitHub

GitHub - nanochess/CVBasic: BASIC language compiler for Colecovision, MSX, SG1000/SMS, Spectravideo SVI-318/328, Creativision, Sord M5, Memotech MTX, Tatung Einstein, Casio PV-2000, Hanimex/Soundic Pencil II, and NES/Famicom.

BASIC language compiler for Colecovision, MSX, SG1000/SMS, Spectravideo SVI-318/328, Creativision, Sord M5, Memotech MTX, Tatung Einstein, Casio PV-2000, Hanimex/Soundic Pencil II, and NES/Famicom....

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Open post
Óscar Toledo G. @nanochess@mastodon.social
· 6mo ago

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

mastodon.social

Mastodon

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Open post
Óscar Toledo G. @nanochess@mastodon.social
· 4mo ago

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

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Mastodon

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Open post
Óscar Toledo G. @nanochess@mastodon.social
· 4mo ago

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

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Open post
Óscar Toledo G. @nanochess@mastodon.social
· 4mo ago

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

IOCCC29 Winning Entries | IOCCC Awards Presentation and Source Code Reveal

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Open post
Óscar Toledo G. @nanochess@mastodon.social
· 4mo ago

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

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Open post
Óscar Toledo G. @nanochess@mastodon.social
· 4mo ago

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

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Mastodon

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Open post
Óscar Toledo G. @nanochess@mastodon.social
· 4mo ago

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

ko-fi.com
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Open post
Óscar Toledo G. @nanochess@mastodon.social
· 4mo ago

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

mastodon.social

Mastodon

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Open post
Óscar Toledo G. @nanochess@mastodon.social
· 8mo ago
Replying to
@leekelleher@mastodon.social @VOLEwtf@crispsandwi.ch Nice!
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