VChar64 v1.0.0 released

I’m releasing VChar64 v1.0.0, exactly 11 years after the first public release, and about 9 years after the latest release. You can download it from here: https://github.com/ricardoquesada/vchar64/releases/tag/v1.0.0

February 10, 2026 · 1 min · ricardoquesada

Announcing Regenerator 2000

I am excited to announce the release of Regenerator 2000, a modern take on the classic Regenerator tool for the Commodore 64 and other 6502-based computers. Regenerator 2000 is an interactive disassembler for the CPU 6502, focused mostly on Commodore 8-bit computers. It features a modern Terminal User Interface (TUI) with features like x-ref, undo/redo, arrows, keyboard-driven navigation, and more! Better yet, it is multiplatform and runs natively on Windows, macOS, and Linux. ...

January 24, 2026 · 2 min · ricardoquesada

Introducing Unijoysticle 2 C64

Unijoysticle 2 C64 adds Bluetooth gamepad functionality to the Commodore 64/128. For those familiar with the Unijoysticle 2+, this is the evolution of it. Features: One gamepad controls one Joystick or two gamepads control two Joystick or one gamepad controls two Joysticks (for Dual Stick games) or use Wii Steering Wheel or use Wii Balance Board Supports gamepad rumble for certain games Supports C64 GS buttons (2nd and 3rd button) for C64 GS games Supports additional 4th and 5th buttons (Select + Start) button for certain games ...

June 22, 2023 · 1 min · ricardoquesada

Gamepad rumble support for the Commodore 64

I discovered a way to send 1-bit of data from the Commodore 64 to the Joysticks. And I use this one-bit of data to turn on/off the rumble in the gamepads through the Unijoysticle. Note: Spanish version of the video is here How does it work ...

October 2, 2022 · 3 min · ricardoquesada

Introducing Unijoysticle 2 A500

Unijoysticle 2 A500 is a device that enables Bluetooth gamepads and mice on the Commodore Amiga.

July 11, 2022 · 2 min · ricardoquesada

Introducing Unijoysticle 2+

Unijoysticle 2+ For those not familiar with Unijoysticle 2, it is a device that allows you to use modern Bluetooth gamepads like Sony DualSense or Nintendo Switch controllers (to name just a few) on old computers like the Commodore 64 or Amiga. What’s new in version 2+: Case friendly: lower profile, LEDs & buttons are close the border and has mounting holes. Looks nicer: Uses SMD components for almost everything Supports buttons 2 & 3 in port #2. Some Amiga games might use them. Cheaper to manufacture. I reduced the price from $60 to $35

October 20, 2021 · 4 min · ricardoquesada

A multi-platform 256-byte intro

https://www.youtube.com/watch?v=nCzAlfXOOXo “Amor para Dos” is a multi-platform 256-byte intro. The binary, without any kind of modification, can run both on: a 80386 (or better) + DOS and on a Commodore 64. We ( L.I.A) released it at Flashparty 2021. I did the coding.

September 5, 2021 · 3 min · ricardoquesada

Building Quico: improved sound, gamepad, and more (part III)

This is the third blog-post regarding “building a video-game console for (my) kids”. See Part II: chiptune, and Part I: gamepad. Quico We have name: Quico. From now on, I’ll refer to this project as “Quico”: Quico ( /ˈkiko/), short for Kids Console (or Kids Computer) Also, one of the main characters of El Chavo del Ocho Sound Shield I converted the breadboard into “shield” for the MatrixPortal M4. ...

December 31, 2020 · 2 min · ricardoquesada

Unijoysticle 2: Nintendo controllers and more!

Unijoysticle 2 Christmas 2019 update, with support for: Nintendo Wii Remote Nintendo Wii U Pro Controller Nintendo Wii Remote + Nunchuk extension Nintendo Wii Remote + Classic Controller extension Nintendo Switch Pro controller 8BitDo family: all modes supported (Switch, Windows, Mac, Android). iCade 8-bitty It also supports: ...

December 23, 2019 · 1 min · ricardoquesada

Commando disassembled - fully commented code

In order to create Commando 2084, I had to disassemble Commando. My original intention was to patch what was only needed and stop there. But I got carried away and I ended up analyzing and commenting the entire Commando code. The commented code (that can be recompiled to generate the exact original binary) is here: https://gitlab.com/ricardoquesada/c64-commando-2084/tree/orig Findings - Level 2 Apparently, the original idea was to ship Commando with 4 levels instead of 3. There is a lot of code/data that indicates that a “level 2” (the levels that are shipped with Commando are level 0, 1 and 3) was in progress, or even finished. ...

October 2, 2019 · 4 min · ricardoquesada