Welcome

SD-Cart JR: New software released
December 29, 2020 (Tuesday)

Compatiblity improvements and fixes.

sdpart.com / sdcart.sys : Add retries reading MBR (fixes some non-working cards)
sdcart.sys : Use CMD13 (Send Status) instead of CMD10 (Read CID) to detect card changes (Solves occasional errors with some cards)
sdpart.com : Add more error checking, display card info before reading MBR, so at least some info is displayed if the read fails.
BIOS : When reading a sector fails, it is retried at least once. (Fixes issues with some cards where drive C: would not be available)

Versions: sdpart.com v0.4, sdcart.sys v0.3, bios v0.30

Raphnet adapter manager: Version 2.1.22 now released
November 7, 2020 (Saturday)

Add support for Dreamcast to USB v2 adapters
Improve Classic controller to N64 adapter support

QuickSilver cartridge for PCjr - A look at the BIOS patches it includes
October 5, 2020 (Monday)

When inserted, this cartridge makes a PCjr boot faster. For fun this week-end I examined in detail what changes it makes to the PCjr BIOS to achieve this.

Megadrive/SMS controller adapter and 64 kb EPROM cartridge PCB for my MSX image

Megadrive/SMS controller adapter and 64 kb EPROM cartridge PCB for my MSX
October 3, 2020 (Saturday)

The RetroChallenge ended many months ago, but that did not stop me from continuing to experiment with my MSX computer. I recently completed two projects: First a 64 kB EPROM ROM cartridge PCB, to avoid long cassette load times for a game, and a Megadrive/SMS controller adapter, because I did not own a joystick. Follow the link for pictures, wiring tables and schematics.

RetroChallengeRetry 2020/04
April 6, 2020 (Monday)

There is an unofficial RetroChallenge this month, the RetroChallengeRetry! So I bought a kind of computer I know nothing about and have zero experience using: An MSX computer. My goals: Make it work, play games, and if I have time, program something on it!

PCjr cartridge PCB version 3
March 31, 2020 (Tuesday)

I recently updated my 64k PCjr cartridge PCB design to offer greater flexibility. It can now use any Chip Select, can replace the system BIOS and now also supports 32k chips.

StellarRoads: Platform game for PC (DOS) image

StellarRoads: Platform game for PC (DOS)
March 15, 2020 (Sunday)

StellarRoads is a 2D scrolling platformer where you can only go forward and survive by skillfully controlling the vessel's speed and jumping right on time!

Heavily influenced by the well known 1993 classic SkyRoads by Bluemoon, StellarRoads can be seen as a sort of 2D "demake" of SkyRoads.

Platform: DOS (or DOSBox)
Video modes: VGA, Tandy or CGA
Sound: PC Speaker, Tandy or Adlib

Carefully coded in x86 assembly to run well original hardware, even at only 4.77MHz with CGA. I hope this game will be yet one more game worth enjoying on your retro PCs!

Boxed edition of RATillery (DOS Game) now available from Côté Gamers! image

Boxed edition of RATillery (DOS Game) now available from Côté Gamers!
February 19, 2020 (Wednesday)

A physical edition of RATillery, including a box, the game on floppy and a set of postcards can now be ordered from Côté Gamers.

The game in this edition is a new version with many improvements over the free version:

VGA 256 color suport (320x200)
VGA 16 color support (640x480)
AdLib, OPL2LPT and Tandy sound support
In-game timer (those who thing too much loose their turn!)
Training mode (get better through challenges)
A much stronger AI adversary (for playing alone)

Do not miss your chance to add this physical edition of RATillery to your collection! Visit the Côté Gamers product page for more information.

M0100 Mouse adapter for Apple IIc
February 13, 2020 (Thursday)

None of my Macintosh M0100 mouse would work on my Apple IIc, so I corrected the problem by building a simple adapter. Pictures, schematics and ready-to-use adapters available.

SNES to Megadrive/Genesis adapter: Firmware version 1.6
October 25, 2019 (Friday)

Add a new mapping (SNES 6 - Hold R)

First project documented for RC2019/10: PCjr cartridge image

First project documented for RC2019/10: PCjr cartridge
October 20, 2019 (Sunday)

This month, for the RetroChallenge, I'm trying to finish and document a few projects. Here is the first one: A PCjr cartridge PCB project with a 3D-printed enclosure, and a cartridge version of Alley Cat for the PCjr!

Booterify version 1.6
October 20, 2019 (Sunday)

First version able to convert executables to PCjr cartridge ROMs.

Bios parameter block and output file padding can now be disabled using -f 0
Add the jrromchk tool, to convert between .JRC and raw PCjr ROM formats
Add a loader for PCjr cartridges (pcjrloader.asm)

RetroChallenge 2019/10
October 1, 2019 (Tuesday)

October 2019. It's already time for another RetroChallenge!

Lately and this month in particular, I've been and will be very busy... While this did not stop me from working on a few retro gaming and computing projects, I have not taken the time to finish them and document everything on my website as I usually do... So! That's exactly what I hope to acheive this month: Finish, document and publish a few projects.

Raphnet adapter manager: Version 2.1.18 now released
July 19, 2019 (Friday)

New firmware for the Classic controller/Wiitar to USB adapter (version 2.1.2)
- Calibrate whammy bar on guitars
- Add support for Wii drums
- Remap Guitar buttons in a more logical order (sequential) and matching drum colors
- Add support for the uDraw tablet (joystick emulation and mouse)
Add SNES to N64 firmwares (incl. new firmware v1.5)
Display 'N64 mouse' when a N64 mouse is connected
Add Wii turntable support to command-line tools. (Thanks to CaitSith2)
Add Wii drawsome tablet protocol decoding
Add support for a Gameport to USB adapter

raphnetraw plugin: New version available for mupen64-plus
July 16, 2019 (Tuesday)

Maintenance for mupen64plus only: (for project64, see previous releases)

Update to input plugin API 2.1.0

Now on Kickstarter: A Boxed edition for my DOS game RATillery image

Now on Kickstarter: A Boxed edition for my DOS game RATillery
April 20, 2019 (Saturday)

A Kickstarter campaign is in progress for a professionlly printed high quality edition, including a box, a 40 pages manual/making-of, a 3.5inch floppy disk containing the game + extras.

The game itself is a new version with many improvements over the free version:

VGA 256 color suport (320x200)
VGA 16 color support (640x480)
AdLib, OPL2LPT and Tandy sound support
In-game timer (those who thing too much loose their turn!)
Training mode (get better through challenges)
A much stronger AI adversary (for playing alone)

Do not miss your chance to own this new high quality physical edition of the game!

Please back the project on Kickstarter.

Famicom network controller HVC-051 image

Famicom network controller HVC-051
April 6, 2019 (Saturday)

Documenting the protocol of the HVC-051 controller for Famicom.

RC2019/03: Project completed!
March 31, 2019 (Sunday)

I finished my RetroChallenge projet just in time! I built a cartridge and the ROM version 1.0 is available for download.

RC2019/03: Super Sudoku ROM version 0.3 released image

RC2019/03: Super Sudoku ROM version 0.3 released
March 26, 2019 (Tuesday)

In this week's update:

Part 14: Testing the cartridge PCB: It works!
Part 15: Adding sound effects
Part 16: ROM Version 0.3 available for download.

RC2019/03: Super Sudoku ROM version 0.2 released image

RC2019/03: Super Sudoku ROM version 0.2 released
March 18, 2019 (Monday)

The game is almost complete! New in this release:

Standard controllers supported
Better hint function
Automatic Sudoku solver
In-game clock

RC2019/03: Designing PCB for the cartridge image

RC2019/03: Designing PCB for the cartridge
March 15, 2019 (Friday)

This week, I designed a PCB to build a cartridge for my SNES Sudoku game. Now waiting for the boards... I hope they'll work!

Wii graphics tablets data format
March 14, 2019 (Thursday)

As far as I know, two different types of graphics tablets were made available for Wii and for a project I'm working on, I need to be able to communicate with both models. So I acquired them and figured out how they communicate. The process is documented on this page.

RC2019/03: Super Soduku! (ROM now Available) image

RC2019/03: Super Soduku! (ROM now Available)
March 11, 2019 (Monday)

My Sudoku game for SNES is progressing well! Many updates this week:

Part 3: Using a sprite
Part 4: Issues on real hardware
Part 5: Validating moves
Part 6: Hints
Part 7: Sudoku puzzles
Part 8: A first relase (v0.1) - Test it!
Part 9: New goals

RC2019/03: Super Sudoku 2019!
March 4, 2019 (Monday)

For the March 2019 edition of the RetroChallenge, I'm making a Sudoku game for SNES, with NTT Data Keypad support (a controller/numeric keypad combo). In this post, I talk about my development tools, I set goals and start working on the game.

My Retro Challenge 2019/03 project image

My Retro Challenge 2019/03 project
February 27, 2019 (Wednesday)

In the previous edition (RC2018/09) I learned a bit of SNES programming, but all I did was a controller test ROM. So for RC2019/03, to avoid forgetting what I managed to learn about 65816 assembly language and SNES architecture, I intend to put my skills to use to make an SNES game, something I've always wanted to do!

Booterify version 1.4
February 5, 2019 (Tuesday)

Initialize the command-line fields of the PSP correctly for .COM executables. (Use length of 1 and add a 0D terminator instead of zero'ing everything)
Implement int 21h,02 (DOS putchar)
Add a version string in the loader and in the tool
Add a makefile for cross-compiling the windows version with MXE

Extenmote 2.1.1 released
February 1, 2019 (Friday)

Add a new button mapping. (Enabled with L+R+Z+Joystick_down)
Improve joystick analog range in 'high resolution' mode.
N64: ZL and ZR are not longer tied. By default, only Zr is used now. The old combined behavior can be toggled with L+R+Z+Joystick_up.

Opl2lpt, The hard way.
January 17, 2019 (Thursday)

Back in 2005, I built an interface to control an ISA AdLib card with a parallel port. I recently noticed that my design is compatible with the recent opl2lpt project, so it can also be used with utilities or games with opl2lpt support.

Recently released DOS games with physical editions
January 3, 2019 (Thursday)

A short page where I attempt to list all recent DOS games for which physical editions have been made or attempted. How many games did I miss?

SMS to MarkIII/SMS-J cartridge adapter
December 31, 2018 (Monday)

A project from 4 years ago I never posted: Circuit and 3D-printable enclosure for an SMS to MarkIII/SMS-J adapter.

XHE-3 adapter for PC Engine
December 10, 2018 (Monday)

The XHE-3 adapter for PC Engine made it possible to use the XE1-AP analog controller with certain games. I was curious about how this rare adapter worked so I reverse engineered one and built an equivalent. Schematics and printed circuit boards available.

Update: Writing an emulator to play RATillery on Android, part 12 image

Update: Writing an emulator to play RATillery on Android, part 12
November 18, 2018 (Sunday)

I decided to port RATillery (written in 8086/8088 assembly) to Android, but without rewriting the game. Hence the project is to create my own 8088 emulator, and I am attempting to do it entirely using Java.

In this sixth edition:

Part 12: Let there be sound! (PC speaker emulation)

Update: Writing an emulator to play RATillery on Android, part 11 image

Update: Writing an emulator to play RATillery on Android, part 11
November 11, 2018 (Sunday)

Part 11: Being nicer to the CPU (and battery). Where I explain how I stop the game from using 100% of the CPU (or 100% of one core) all the time.

Raphnet adapter manager: Version 2.1.16 now released
November 6, 2018 (Tuesday)

New firmware version (3.5.0) for GC/N64 to USB adapters image

New firmware version (3.5.0) for GC/N64 to USB adapters
November 6, 2018 (Tuesday)

Add gamecube keyboard support

raphnetraw plugin: New versions available for pj64 and mupen64-plus
November 6, 2018 (Tuesday)

Maintenance:

Support for adapters running firmware version 3.6.x

Game Boy Camera save RAM photo to PNG image

Game Boy Camera save RAM photo to PNG
October 31, 2018 (Wednesday)

Reading the Game Boy Camera save RAM data is possible with a Transfer Pak and my N64 to USB adapter, and to convert this data to standard images I decided to make my own tools. One is a command-line tool for Linux, and the other is a Javascript/HTML5 version which runs locally in a browser.

Raphnet adapter manager: Version 2.1.14 now released
October 30, 2018 (Tuesday)

RC2018/09: Conclusion
October 2, 2018 (Tuesday)

This edition of the RetroChallenge is (already!) over. My overall goal was to learn as much as I could about the NDM24 Modem for Super Famicom, and I think I was successful. I now know enough to write my own code to communicate with it. I also know more about what this JRA PAT "game" was and even modified an emulator to let it run as "well" as it does on real hardware: That is to say that in both cases, the game hits the wall of failing to communicate with its server.

RC2018/09: Modem emulation now works and establishes a TCP connection image

RC2018/09: Modem emulation now works and establishes a TCP connection
September 22, 2018 (Saturday)

I figured out the missing bits using a logic analyzer and modem emulation finally works! But a the game still needs a server...

Raphnet adapter manager: Version 2.1.12 now released
September 18, 2018 (Tuesday)

RC2018/09: Let's look inside the NDM24 modem image

RC2018/09: Let's look inside the NDM24 modem
September 17, 2018 (Monday)

As I wait for a logic analyser to arrive (to figure out why emulation is not working), I look inside the modem to see what else I can learn and notice a debug port I will probably use.

RC2018/09: Modem monologue
September 14, 2018 (Friday)

Modem emulation is half working. JRA PAT sends AT commands, but the answers won't get through yet. I will need to probe the signals on the modem to learn more.

RC2018/09: Flash chip emulation
September 13, 2018 (Thursday)

I implemented basic (functional I think, but not accurate in terms of timings) flash memory emulation. JRA PAT now gets to the point where it want to communicate with the modem. Now I can start trying to emulate it.

RC2018/09: My first SNES program
September 10, 2018 (Monday)

I taught myself a bit of SNES programming and created a simple ROM: a controller test supporting the NTT Data Keypad.

RC2018/09: A start at emulation and some new goals image

RC2018/09: A start at emulation and some new goals
September 2, 2018 (Sunday)

This is the second update, where I seriously start working on emulation, but as I also learn that almost everything I intended to find out is already documented, I set some new goals.

RC2018/09: Let's look at the 'game' image

RC2018/09: Let's look at the 'game'
September 2, 2018 (Sunday)

This is the first update, where I connect the modem and keypad controller to a Super Nintendo (yes, wrong region) to see what this is all about. I also manage to dial into another computer and try making sense of the first (and only) data frame sent by the game.

Raphnet adapter manager: Version 2.1.10 now released
June 28, 2018 (Thursday)

My Retro Challenge 2018/09 project image

My Retro Challenge 2018/09 project
August 28, 2018 (Tuesday)

My project for this edition: Learn everything I can about the NDM24 modem for Super Famicom:

Find out how the modem communicates with the console through a controller port.
Learn more about the modem. How fast (or slow) is it? Does it use standard AT commands?
Attempt to make everything work in an emulator. (Communication with the modem and modem commands?)
Pretend the connection succeeds to see what happens.
Attempt to understand the nature of the exchanges between the game and the server.

In other words: I am going to spend several hours working on figuring out how an obscure and (now) mostly useless piece of hardware almost nobody has ever heard of nor cares about works. And I know I'll enjoy it!

Update: Writing an emulator to play RATillery on Android, part 10 image

Update: Writing an emulator to play RATillery on Android, part 10
August 27, 2018 (Monday)

Adapting the UI for touch screen interaction
Try the Beta app now!

More coming up, stay tuned.

Update: Writing an emulator to play RATillery on Android, parts 7 to 9 image

Update: Writing an emulator to play RATillery on Android, parts 7 to 9
August 15, 2018 (Wednesday)

Keyboard support
In-game bugs
Optimisations for faster emulation (12 times faster)

More coming up, stay tuned.

Update: Writing an emulator to play RATillery on Android, parts 5 and 6 image

Update: Writing an emulator to play RATillery on Android, parts 5 and 6
August 9, 2018 (Thursday)

Tandy 16 color video to Bitmap
Implementation errors
The title screen works!

Additional sections will be appended to the page in the following weeks.

mobile8088: Writing an emulator to port RATillery to Android image

mobile8088: Writing an emulator to port RATillery to Android
August 4, 2018 (Saturday)

Introduction
Android and Java
General architecture
Implementing the CPU
A first image

Additional sections will be appended to the page in the following weeks.

NTT Data Keypad for Super Famicom controller (NDK10) image

NTT Data Keypad for Super Famicom controller (NDK10)
August 2, 2018 (Thursday)

A while ago I bought a pair of unusual Super Famicom controllers that were part of (or for use with) a Super Famicom modem kit. I had a bit of fun figuring out how they work and this page is the result.

Raphnet adapter manager: Version 2.1.6 now released
June 21, 2018 (Thursday)

PSX Memory Card Manager: Updated after 17 years! image

PSX Memory Card Manager: Updated after 17 years!
June 11, 2018 (Monday)

Now also works under Windows (download the .zip)
Support titles in Japanese correctly (convert Shift_JIS to Unicode)
Now compiles with Qt4 (with the help of Qt3 compatibility classes)
Now built using qmake
License updated to GPLv3 (License text now also included)

RC2018/04: RainZapper v2 (Now with CGA and VGA support!) image

RC2018/04: RainZapper v2 (Now with CGA and VGA support!)
May 27, 2018 (Sunday)

Version 2 of the mini-game RainZapper I made for the April 2018 edition of the Retro Challenge is now available. New in this version: CGA and VGA adapter support. Tandy adapters are of course still supported. All these versions are also playable using a mouse, a good (but inferior) alternative to the NES Zapper which requires building an adapter...

raphnetraw plugin: Version 1.0.5 released
May 16, 2018 (Wednesday)

Bugfix/maintenance:

Add protection against invalid commands (Fixes errors when using more than one controller pak)
Disabled logging (slight increase in performance)

My Retro Challenge 2018/04 project
April 24, 2018 (Tuesday)

I guess I should have written about this at the beginning of the month, but better late than never! Here's what I'm doing for RC2018/04:

Design an adapter to connect an original NES Zapper to a Tandy 1000 EX PC.
Code a Duck Hunt clone and/or an original mini-game if I find inspiration.
Use the Tandy-specific 16 color video mode. (It would be a shame not to!)

And if I have enough time:

Also support CGA 320x200 video, and test the game on my XT-clone with a CGA card.
Experiment a bit to find out if an unmodified Zapper can also work on a VGA monitor.
Let the game also be played using a mouse (speed could be accelerated to make aiming more difficult.)

Things are going quite well so far, so I will most likely have time for the sub quests listed above!

New firmware version (3.5.1) for GC/N64 to USB adapters image

New firmware version (3.5.1) for GC/N64 to USB adapters
April 10, 2018 (Tuesday)

Fix never-stopping vibration issues (Dolphin)

Raphnet adapter manager: Version 2.1.5 now released
March 24, 2018 (Saturday)

New firmware version (3.5.0) for GC/N64 to USB adapters
November 25, 2017 (Saturday)

New features and bugfixes:

Add a triggers as buttons mode for Gamecube controllers
Add a disable analog triggers mode for Gamecube controllers
Internal changes to workaround a presumed Windows bug (Joystick ID confusion where the second controller stops working or gives an error in the Game controller test dialog)
Implement a feature to let the adapter manager query the feature set of the current firmware.

raphnetraw plugin: Version 1.0.4 released
November 22, 2017 (Wednesday)

pj64 plugin version 1.0.4 and mupen64plus plugin version 1.0.1:

Add support for the upcoming 3.5.x adapter firmware (2-player adapters won't work properly otherwise)

Raphnet adapter manager: Version 2.1.3 now released
November 19, 2017 (Sunday)

Raphnet adapter manager: Version 2.1.0 now released
November 1, 2017 (Wednesday)

raphnetraw plugin: Version 1.0.3 released
April 16, 2017 (Sunday)

Bugfixe(s):

Fix ports 1 and 3 special version
Another attempt to fix netplay (version 1.0.2 did not work)

New firmware version (v2.1) for the Gamecube to N64 adapter image

New firmware version (v2.1) for the Gamecube to N64 adapter
April 9, 2017 (Sunday)

Add a new conversion mode for Joystick values: Extended (where Gamecube values are forwarded to the N64 without transformations)
Fix erratic button mashing behaviour in Shadows of the empire
Set lock bits to protect bootloader from erasure

Adapter manager: Added support for the N64 Transfer Pak image

Adapter manager: Added support for the N64 Transfer Pak
April 7, 2017 (Friday)

Booterify version 1.3
March 1, 2017 (Wednesday)

Disk images now have a standard FAT12 filesystem so besides being bootable, floppies may also contain extra data (.EXE version of the program, documentation, etc...)

GC/N64 controller to USB adapter manager updated image

GC/N64 controller to USB adapter manager updated
February 4, 2017 (Saturday)

raphnetraw plugin: Version 1.0.1 released
January 24, 2017 (Tuesday)

Add another special build where two-port adapters act as N64 ports 1 and 3. (This is in the hope that the Densha de GO! controller will then work.)

GC/N64 to USB adapter firmware 3.4.0 released image

GC/N64 to USB adapter firmware 3.4.0 released
January 8, 2017 (Sunday)

Performance improvement:

New IO request for even lower latency when using the raphnetraw plugins.
Reduced memory footprint.

raphnetraw plugin: Transfer Pak, N64 mouse and Bio Sensor support confirmed
December 18, 2016 (Sunday)

A user tested the Transfer Pak and I was able to test a N64 mouse and the Bio Sensor (for Tetris 64). As I expected, everything already just worked and no changes were required.

raphnetraw plugin v0.9.4 now available image

raphnetraw plugin v0.9.4 now available
December 3, 2016 (Saturday)

Maintenance release:

Improved structure and separation for easier maintenance of the code shared between the Project 64 and mupen64plus versions of this plugin.
Support for the upcoming 3.4.x adapter firmware (will provide even lower latency/overhead)

Extenmote 2.1.0: NES Classic Edition now supported. image

Extenmote 2.1.0: NES Classic Edition now supported.
November 30, 2016 (Wednesday)

My extenmote project which permits the connection of NES, SNES, Gamecube, N64 and other controllers to Wii remotes (by emulating a classic controller) now also works on the NES Classic Edition. But this needs more testing... Please test and report if you can!

Direct N64 controller access plugins for mupen64plus and Project 64 (Experimental)
November 20, 2016 (Sunday)

These plugins use the direct controller access feature offered by my N64 to USB adapters (versions 3 and up) to let the emulated game communicate with the controllers directly. As as result, the rumble pak, controller pak (mempak) and potentially other accessories are automatically supported! (Updated: Now for Project 64 too!)

My projects now on GitHub
November 19, 2016 (Saturday)

In the hope that it will make contributing easier (and therefore less rare), I decided to push many of my projects on GitHub. But I will continue to do official releases on this website, and the option of contacting me by email to discuss anything about a project remains.

New DOS game for retro PCs: RATillery
September 5, 2016 (Monday)

RATillery is a simple artillery game inspired by gorillas but written to run even on early PCs. In RATillery, two fireball-throwing rats fight atop stacks of crates in a warehouse. Try the game online, or download it for your old PCs!

Minimum system requirements: 64kb free memory, 64kb free hard drive (or floppy) space, CGA video card.

Adding a component video (YPbPr) output to an SNES console image

Adding a component video (YPbPr) output to an SNES console
August 22, 2016 (Monday)

Adding an Y/Pb/Pr (also known as Component video) to some SNES models is possible, and my triple video buffer board is perfect for this project. Visit the page for an example.

PC-Booter (re)creation tool: Booterify
July 26, 2016 (Tuesday)

A tool to convert 16-bit .EXE et .COM executables to bootable floppy images without DOS. Can recreate the original experience of some old PC booter games or add a nice extra touch to homebrew retro works.

Updated firmware for the 4 NES/SNES controllers to USB adapter project (4nes4snes) image

Updated firmware for the 4 NES/SNES controllers to USB adapter project (4nes4snes)
June 5, 2016 (Sunday)

New in version 1.5:

NES buttons have been reassigned to match SNES buttons. This makes it possible to switch controller type without reconfiguring anything. Works great for RetroPie...

Video Game Memories
May 1, 2016 (Sunday)

Mini-reviews and screenshots of PC games I played as a child. Did we play the same games? They are all excellent games I invite you to (re)discover on your retro PCs or using DosBox!

Computa games
April 13, 2016 (Wednesday)

25 years ago in the course of the 1990-91 school year, as my third grade class visited the computer room for the first time I remember playing Computa games (FR: Jeux de calcul) by André Normandeau. Today, following an interview with the author, I have the pleasure of relating how this educative math game came into existence, and I am delighted to offer an online version.

Do you remember playing it? Try it with your kids, it's fun!

PPUSBCOMM: Added disk image transfer image

PPUSBCOMM: Added disk image transfer
March 19, 2016 (Saturday)

Besides sending files to your retro PC system, PPUSBCOMM can now receive a disk image, writing it directly to a target floppy disk. Similar to ADT (Apple Disk Transfer) targeting Apple II computers, but for PCs. Ideal to recreate system and PC booter games disks.

Raphnet-tech is now on Facebook
February 28, 2016 (Sunday)

Stay informed about my projects, updates, and raphnet-tech new products by liking the raphnet-tech Facebook page.

Third generation of my GC/N64 controller to USB adapter image

Third generation of my GC/N64 controller to USB adapter
February 16, 2016 (Tuesday)

This new version, based on my Multiuse PCB-X board, beats previous versions in performance and features:

USB full speed (12 Mbit/s)
Very low latency (approx. 6ms worst case)
Configurable controller poll frequency (Maximum 500Hz)
Firmware update possible and easy
N64 mempak read/write

End of page bonus: Latency explained: What is latency, how it happens, how we can minimize it and a raphnet vs. competition comparative table.

PPUSBCOMM: USB to Parallel port file transfer image

PPUSBCOMM: USB to Parallel port file transfer
December 27, 2015 (Sunday)

PPUSBComm is a tool to copy files from a Linux system with USB ports to a system running DOS with a parallel port. I created this tool to send games and software I download to my Tandy 1000 EX.

Multiuse PCB-X : A small multipurpose PCB with an USB micro-controller
December 27, 2015 (Sunday)

This USB-specialized circuit board design is inspired from my previous Multiuse Tiny 1 and Multiuse PCB2 projects. This time, since a micro-controller with native USB support is used, it is possible to transfer data at 12 Mbit/s (Full speed) unlike the older designs which, due to the use of a software-only USB implementation (V-USB), were limited to 1.5 Mbit/s (Low speed).

CGA to VGA converter using an FPGA
November 28, 2015 (Saturday)

I simply wanted to have fun with an old Tandy 1000 EX computer, but the image quality using the NTSC video output was unbearable. The alternative was to use a CGA monitor of course! But as I don't own one, I started looking at how I could build a CGA to VGA adapter, which I was able to build using an FPGA development kit. The project was the perfect excuse to acquire one. See the page for notes, explanations, schematics and source code (at your own risk).

The colors of video game consoles
June 24, 2015 (Wednesday)

An exercise in identifying the exact colors used by some video game consoles.

DIY SMS/MarkIII paddle controller
March 28, 2015 (Saturday)

Unable to find one at a reasonable price, I built my own Paddle Controller for Sega Master System. Schematics, source code and files for 3D printing are available.

Setting up the stack for SMS games on Megadrive image

Setting up the stack for SMS games on Megadrive
February 14, 2015 (Saturday)

A quick hack I made to improve the compatibility of an SMS to Megadrive cartridge adapter by having an AVR micro-controller drive instructions on the bus before the game runs.

3D Printing
November 22, 2014 (Saturday)

I recently began experimenting with a 3D printer and created a page to expose some of the parts I made. Files in .STL format are most of the time included in case someone would want to print one too.

MarkIII cartridge to Megadrive/Genesis adapter image

MarkIII cartridge to Megadrive/Genesis adapter
October 31, 2014 (Friday)

When I was designing my SMS (non-Japanese) to Megadrive/Genesis cartridge adapter, I learned that the Japanese version of this console used a different connector (44 pins instead of 50). So I decided to also design an adapter for Japanese cartridges.

AnodeSNES
September 7, 2014 (Sunday)

A 4x SNES to USB adapter built in a beautiful enclosure machined from a solid block of aluminium with a black anodized finish.

SMS cartridge to Megadrive/Genesis adapter
August 22, 2014 (Friday)

I had known for a long time that Sega Master System (SMS) games can be played on a Sega Megadrive/Genesis (SMD) console using a simple 50 to 64 pin adapter, and thought a few times about making one. So when I was told my SNES to SMD controller adapter did not work when a SMS game was being played, it was all I needed as an excuse to design and build an SMS to SMD adapter.

New entry in the NES mods page: Using SNES controllers on a NES image

New entry in the NES mods page: Using SNES controllers on a NES
June 1, 2014 (Sunday)

It has been known for a long time that using SNES controllers on a NES was possible and easy to do using simple wiring. So this is nothing new, but since I recently built such an adapter, I just thought I'd document it on this page.

SNES controller to Playstation adapter
May 31, 2014 (Saturday)

Schematics and firmware for my SNES controller to Playstation adapter project.

Features:

Supports original SNES controllers and most clones.
Acts like an original Playstation digital controller.
Two button mappings are available

wusbmote: Update (Version 1.2)
May 4, 2014 (Sunday)

New features:

Add mouse support (Using Nunchuk or Classic controller)
- Classic controller mouse scroll using right stick
- Nunchuck mouse scroll wheel by moving then holding C
Configuration now stored in EEPROM. Includes:
- Serial number
- Operating mode (Mouse or Joystick)
- Mouse parameters: Divisor, deadzone, invert wheel.
Implement an HID Feature report to set configuration
Add a Linux tool to set configuration through USB (Uses hidapi)
Change VID/PID
Atmega168 now compatible (Use Makefile.atmega168)
Code cleanup

NES/SNES/N64/GC controller to Wiimote adapter update (v1.9.5)
April 26, 2014 (Saturday)

New Gamecube button mapping
Triple click on START button now triggers the HOME button (SNES/NES/GC/N64)
Prevent a 8 bit overflow from occuring with some cheap controller clones. Fixes the 'joystick left/down direction does not work' problem, but keep in mind the overall quality of the controller won't increase. It will work as badly as it does on a real N64.
Fix N64/Gamecube communication timing (note: No effect on 'lag' or lantency)
Fix eeprom init bug (Last mapping not saved)
Improved controller auto-detection

wusbmote: Small update (Version 1.1) image

wusbmote: Small update (Version 1.1)
April 26, 2014 (Saturday)

The Wiimote accessory (Nunchuk, Classic controller, etc) has been updated (simple maintenance):

Update V-USB and fixes for modern GCC
Optimized I2C code

GC/N64 controller to USB version 2.9.1 image

GC/N64 controller to USB version 2.9.1
April 18, 2014 (Friday)

Minor fixes and improvements:

Prevent 8bit overflow from occuring. Helps some cheap 3rd party controllers that have the "Left not working" problem. (Thanks to this fix, those "should never be bought" controllers change from "totally unusable" to "frankly not very good")
Fix non-working timeout when waiting for the controller. The adapter now enumerate without controllers as it used to.

3 Channel video buffer
April 13, 2014 (Sunday)

Having been in need of a video buffer for two projects[1][2] in a row, I thought it would be nice to have a small circuit board with all the required components. So I designed one.
Possible uses:

Adding composite video outputs on old consoles.
Video amp for video game RGB mods.
Video buffer/repeater (eg: To display the same picture on multiple monitors)

APF TV Fun console repair
March 17, 2014 (Monday)

A friend entrusted me with an old APF TV Fun videogame console for repair. On the following page, I give details on the repairs and modifications I performed.

VirtualBoy controller to USB adapter image

VirtualBoy controller to USB adapter
March 1, 2014 (Saturday)

So you want to play with a Virtual Boy emulator on your PC, depriving yourself the pleasure of adopting an unpleasant posture and of getting a headache? At least, don't go so far as to deny yourself the privilege of holding the real controller in your hands! (Ok, I admit I never really tried a real Virtual Boy. Maybe it's not that bad...)

Anyway, in order to use a Virtual boy controller on a PC, I designed an adapter. The schematics, wiring and source code are on this page.

Repairing a Commodore 64
December 21, 2013 (Saturday)

I won a « commodore 64 - working » on a popular auction site. Well there must have been some mistake for the machine I received did not actually work. And I wanted a working C64 right now. Returning it and trying to win another one would surely take too long... So I got a partial refund (« Working » auction converted to « As-is - untested ») and impatiently began the repair.

Visit the page to read about the repair details and an unexpected issue with my LCD TV (+ its complicated solution).

Zaisu
December 8, 2013 (Sunday)

I own a kotatsu (炬燵), that is a low Japanese table covered by a blanket. An electric heater placed underneath warms the kotatsu. By sitting with the blanket draped over our legs, we manage to keep warm in winter despite the lower house temperature. But sitting on the floor and on your legs tends to become uncomfortable after a while. Also, fully extending the legs under the table to catch more heat is difficult without something to rest your back. The japanese Zaisu (座椅子) chair is a perfect solution. This is like an ordinary chair but without legs. But as these are rather rare here in Canada, except in specialized (and expensive) importation stores, I decided to build my own.

GC/N64 to USB project: Gamecube keyboard support added to firmware v2.9 image

GC/N64 to USB project: Gamecube keyboard support added to firmware v2.9
November 24, 2013 (Sunday)

The Gamecube keyboard is now supported and can be used normally under Windows and Linux. Note that I only tested ASCII model ASC-1901P0. This keyboard has a dual-connector cable. The gray connector is for the keyboard function and the purple one for the Joystick function. To use both functionalities simultaneously, two adapters are required. As this is a Japanese style keyboard, there are a few unusual keys and many won't produce the labelled characters unless the PC is configured to use a Japanese Keyboard.

New Dreamcast to USB firmware adds Keyboard support image

New Dreamcast to USB firmware adds Keyboard support
November 23, 2013 (Saturday)

New in version 1.2:

Dreamcast keyboard support (Tested: HKT-7600 and HKT-4000)
Increased poll rate for better responsiveness
Display an image on the LCD if present. (Hardcoded image. Not usable by emulators)

The keyboard can be used as a normal Japanese keyboard under Linux and Windows!

Dreamcast controller to USB adapter ready image

Dreamcast controller to USB adapter ready
November 2, 2013 (Saturday)

The Dreamcast controller to USB adapter I have been working on for the last few weeks is finally ready. The first version supports the official Sega controller. Also, the mouse is partially supported.

SNES controller to Genesis/Megadrive adapter: Update
October 29, 2013 (Tuesday)

New features:

Added two new Genesis mappings
Added a new Atari mapping
Added support for 2nd fire button (Amiga)
Added auto-fire for Atari mode (Button 1/Fire). Selectable auto-fire speed 30Hz, 25Hz, 20Hz, 16.667Hz, 15Hz and 12.5Hz
Auto-fire lock mode for Button 1/Fire. (Toggled by START)

Dreamcast controller to USB adapter project: Adding partial mouse support image

Dreamcast controller to USB adapter project: Adding partial mouse support
October 27, 2013 (Sunday)

This week-end I decided to add support for the Dremcast mouse I had received during the week. But for now, it will only be partially supported (no wheel) due to technical limitations.

Dreamcast controller to USB adapter project: Prototype working image

Dreamcast controller to USB adapter project: Prototype working
October 16, 2013 (Wednesday)

This weekend, I implemented frame reception and USB communication. I now have a working prototype. All that is left is cleaning up the code and drawing a schematic for release.

GC/N64 to USB : New pictures
October 10, 2013 (Thursday)

A few pictures to demonstrate how a N64 controller can be converted to USB by installing the circuit within.

Dreamcast controller to USB adapter project: Progress, transmission is a success image

Dreamcast controller to USB adapter project: Progress, transmission is a success
October 9, 2013 (Wednesday)

I began writing the firmware. First step, implement a transmission routine in assembler to achieve a timing identical (or very close) to what is shown on http://mc.pp.se/dc/, but also to what I see on my Dreamcast bus with the scope. Status: Transmission is a success. But looking at the result on a scope is obviously not very useful, so the next step is implementing reception. More fun to come!

SNES controller to Genesis/Megadrive adapter: Update
October 8, 2013 (Tuesday)

Implemented Atari/Commodore support:

Two selectable button mappings
Enabled by grounding PB1. Note: A slightly different DB9 wiring is required.

Beginning Dreamcast controller to USB adapter project
October 5, 2013 (Saturday)

I have received many requests and while I had been looking forward to the challenge of building this adapter, due to other not less interesting projects, it took a very long time before I finally began working on it. This time, following a suggestion and contrary to my habit of only posting projects in their completed form with the source and schematics, I decided to create a build log page I would update as things progress.

USBTenki version 2.1.0 released
September 22, 2013 (Sunday)

[Firmwares] Updated V-USB to newer version.
Add support for high precision MS5611 pressure sensor.
Add support for the MLX90614 infrared temperature sensor.
RTD temperature calibration has changed (increased precision).

SNES controller to Genesis/Megadrive adapter
September 22, 2013 (Sunday)

If you want to play games on your Genesis/Megadrive console but have a strong preference for SNES controllers, or own many cool arcade sticks for the SNES which you'd like to use, an adapter to connect SNES controllers to your Genesis/Megadrive is exactly what you need.

GC to NES v1.1.1 released
September 2, 2013 (Monday)

A new release incorporating minor changes to support the Atmega168 MCU.

Famicom controller to NES adapter
September 1, 2013 (Sunday)

An adapter for using Famicom controllers on a NES.

AcrylicSNES
July 6, 2013 (Saturday)

A four-player SNES to USB adapter made from acrylic and wood.

A frame for Tatami mats
July 4, 2013 (Thursday)

A simple tatami frame design, easy to build, to hold 5 tatami.

Book Bench
June 30, 2013 (Sunday)

This small shelf, with it's shape evoking a bench hence it's name, Book Bench, lets small books vertically sit on it. Thanks to the reclined position, the books are stable and the need for bookends is done away with, saving up space.

Two NES/SNES controllers to USB adapter image

Two NES/SNES controllers to USB adapter
April 21, 2013 (Sunday)

This is a two player variation of my 4nes4snes project. The firmware is modified to expose only two controllers to the PC, preventing two extra controllers from needlessly appearing if an two player adapter is built.

Extenmote: NES, SNES, N64 or Gamecube controller on Wii or Wii U through a Wii remote.
December 25, 2012 (Tuesday)

The gamecube ports have been removed from the new Wii consoles and the Wii U does not have any. This new project works around the problem by using the Wiimote extension port like the classic controller does. This provides a way to play virtual console titles with the original controllers again on the Wii U and regular Wii consoles (with or without gamecube ports).
2013-01-30: Version 1.5 now available!

wusbmote: Wiimote accessory to USB adapter image

wusbmote: Wiimote accessory to USB adapter
November 4, 2012 (Sunday)

This new project makes it possible to use Wiimote accessories such as the Nunchuk, the Classic Controller and the Wii Motion Plus. Official versions and clones such as the wireless Nunchuk are also supported. Works as is on most operating systems thanks to the USB HID implementation.

USB_Game16: 16 buttons to USB (4 directions)
June 17, 2012 (Sunday)

A project for using 16 buttons (4 directonals) as a standard USB Joystick. Ideal for custom joysticks and PC-based arcade cabinets.

The 4nes4snes projet now supports SNES multitaps image

The 4nes4snes projet now supports SNES multitaps
April 14, 2012 (Saturday)

The new firmware version 1.3 adds support for the SNES multitap. So far, it has only been tested with a Naki Tribal tap.

New: Gamecube controller to NES adapter image

New: Gamecube controller to NES adapter
February 10, 2012 (Friday)

With this project, it is possible to use a Gamecube controller on a NES. Perfect for a wireless solution involving the Nintendo Wavebird. And in an attempt to profit from the additional elements of the gamecube controller, the firmware has special features such as Turbo and mario-auto-run modes. It's fun!

Famicom controller II microphone support (as a button) image

Famicom controller II microphone support (as a button)
November 17, 2011 (Thursday)

The Famicom controller II does not have select or start buttons, but it has a built-in microphone! This new firmware makes it possible to use the microphone as a button.

Small project: Plastic bag sealer made from spare parts
November 10, 2011 (Thursday)

I was looking to ship small electronic components in anti-static bags, reusing the bags I had on hand, but they were all too big. The obvious solution was to cut them to a reasonable size and seal the edges with a bag sealer. However, I did not want to buy one so I built this simple version using components I had in stock.

N64/Gamecube to USB : Rumble Pack / Vibration finally supported! image

N64/Gamecube to USB : Rumble Pack / Vibration finally supported!
November 1, 2011 (Tuesday)

The new firmware version 2.0 adds support for the long awaited N64 Rumble Pack and Gamecube vibration feature! Special thanks to Sean Green for providing an updated device descriptor and an example main.c from his own project for me to use and finally implement this feature. Without this, I don't think I would have ever taken the time to add this feature.

Project: Gamecube controller to N64 image

Project: Gamecube controller to N64
August 16, 2011 (Tuesday)

A new project designed for using a Gamecube controller on the N64 console. Provides a way to solve the worn-out N64 controllers, or the problem of cables (Wavebird supported!). The firmware, with programmable button mappings and low latency algorithm insures a smooth gaming experience.

Project: Sega Saturn to USB adapter image

Project: Sega Saturn to USB adapter
July 2, 2011 (Saturday)

This project makes it possible to use Sega Saturn peripherals (controllers, mouse) on a PC though the USB ports. The current firmware supports the Basic controller, the analogic controller and the mouse (aka. Shuttlemouse)

Projet Gamecube/N64 to USB : Version 1.4 image

Projet Gamecube/N64 to USB : Version 1.4
June 12, 2011 (Sunday)

Gamecube communication code more robust, increased reliability and compatibility, Japan import white Gamecube controller support confirmed.

HPD-200 Sega paddle support
June 11, 2011 (Saturday)

Added Sega Paddle support (HPD-200). Auto-detected in DB9 mode. If the circuit is installed inside the controller, the two buttons can be wired independently.

N64 HORI-mini support for the Gamecube/N64 USB adapter project image

N64 HORI-mini support for the Gamecube/N64 USB adapter project
May 23, 2011 (Monday)

New firmware version 1.3 introduces a new algorithm which was specially written to work correctly with HORI-mini N64 pads. This new release also supports changing between N64 and Gamecube controller at runtime (without reconnecting the USB cable). Also, the requirement of having a controller present for the adapter to be detected by the computer is gone.

Forgotten project: USB-Controlled High power RGB LED
May 14, 2011 (Saturday)

A microcontroller circuit and software to control a powerful 3 color led (Red, Green and Blue) to obtain a variety of hues and intensities, computer-controller through USB. Forgotten for 4 years, I wrote the remaining parts, translated to english and finally published this project.

USBTenki version 1.7 now available image

USBTenki version 1.7 now available
August 16, 2010 (Monday)

New software to support an additional atmospheric pressure sensor and fix for a low temperature bug occuring with the MCP980x sensor.

New firmware for X2Wii N64 version image

New firmware for X2Wii N64 version
June 8, 2010 (Tuesday)

With Rumble Pack support! Now for the Atmega88 instead of the discontinued Atmega8.

New 4nes4snes firmware version 1.2 image

New 4nes4snes firmware version 1.2
May 2, 2010 (Sunday)

Added NES fourscore support. At power up only, when a fourscore is detected in port 1, fourscore mode is entered and ports 1 and 2 are used to read up to 4 NES controllers.
Implemented Live autodetection. This allows NES and SNES controllers to be changed during use, so power cycling the adapter is no longer necessary. This feature can be disabled by closing JP1.
License changed to GPLv2.

New project: Atari Jaguar controller to USB
February 8, 2009 (Sunday)

With this new project, an Atari Jaguar controller can be converted to USB. It's also possible to build an adapter if you do not wish to alter the original hardware.

USBTenki: USB-Connected temperature (and more!) sensors image

USBTenki: USB-Connected temperature (and more!) sensors
June 6, 2007 (Wednesday)

This project makes it possible to read a variety of sensors using an USB port.

Gamecube/Nintendo 64 controller to USB adapter image

Gamecube/Nintendo 64 controller to USB adapter
April 24, 2007 (Tuesday)

A friend wanted to play N64 games on his PC with an original controller... So I built him an adapter to do it, with Gamecube as a bonus. As usual, the project is open-source.

Kenwood IR keyboard to standard PC keyboard (PS2) adapter. image

Kenwood IR keyboard to standard PC keyboard (PS2) adapter.
April 15, 2007 (Sunday)

I received a small wireless keyboard (IR based) meant to be used with a Kenwood audio system. Wanting to use it with a PC instead, I built a receiving that connects to a PC as a standard PS/2 keyboard.

4 Controllers (NES and SNES mix) to USB adapter image

4 Controllers (NES and SNES mix) to USB adapter
April 1, 2007 (Sunday)

Following my single NES/SNES controller to USB project, I have been asked several times if a multi-player version would be possible. Now I finally found the time to do it.

NES/SNES controller to Gamecube/Wii adapter image

NES/SNES controller to Gamecube/Wii adapter
February 28, 2007 (Wednesday)

A new project for converting a NES/SNES controller to Gamecube/Wii. The main goal is of course to be able to use the original controllers to play Wii Virtual console games. As usual, the project is open-source.

Repairing an Atari 130xe
November 26, 2006 (Sunday)

A page about how I brought back to life an Atari 130xe.

Opening of the raphnet.net online store image

Opening of the raphnet.net online store
July 10, 2006 (Monday)

I decided to open a small store to answer demand for pre-built versions and kits of my projects. Not many products at the moment, but many are to come!

NES/SNES controller to USB adapter image

NES/SNES controller to USB adapter
July 10, 2006 (Monday)

Parallel ports are getting rarer these days, so it is about time we find a new port to use for PC interfacing in replacement of the slowly disappearing parallel port. I managed to do an USB version. The solution is fully open-source so anyone with the right equipment and skills should be able to convert a controller or build an adapter.

Using an SNES mouse on a PC
April 2, 2006 (Sunday)

Nintendo produced a mouse for the SNES. The mouse was sold with a game called Mario-Paint which was a drawing game (similar to paint brush). I still have a Nintendo mouse but I thought it was sad not to use it anymore so I found a way to use it with my PC.

Projection clock
January 31, 2006 (Tuesday)

How I built a simple projection clock from a cheap watch.

Hacking a NES console to play VS arcade games image

Hacking a NES console to play VS arcade games
January 17, 2006 (Tuesday)

In order to improve the low scores I kept getting on the Super Mario Bros arcade, I decided to mod a NES console to make the NES version of SMB run on it. The result: A dedicated Super Mario Bros VS. console, without a cartridge (no bad contacts) with switches on the front panel to tweak some aspects of the game (A user friendly version of dip switches found on the arcade motherboard).

Solder fume extractor
January 2, 2006 (Monday)

I build a solder fume extration system to prevent breathing too much bad stuff when soldering.

Homebuilt anemometer
October 30, 2005 (Sunday)

I wanted to build a measuring instrument which must be placed outside, exposed to the natural elements. So I built an anemometer...

Reprogrammable Genesis/Megadrive cart image

Reprogrammable Genesis/Megadrive cart
October 23, 2005 (Sunday)

I built a reprogrammable cartridge to be able to try out demos and homebrew games on the real thing. Pictures, schematics, PCB artwork and software tools are all available.