This is a libretro core for emulation of the Thomson TO8/TO8D computers. It is based on Daniel Coulom's DCTO8D emulator.
Install RetroArch, then start RetroArch and download the "theodore" core using the "Core Updater" feature.
On Linux (and most other platforms):
make
You can then run the core with a libretro frontend like RetroArch:
retroarch -L theodore_libretro.so
To compile the Android version, you need the Android NDK:
cd jni
ndk-build
A => "Fire" button
B => Simulates a keystroke on the 'B' key of the keyboard (allows to start most games without the need for a keyboard)
Virtual keyboard feature: the Y/X buttons of the controller can be used to select a digit/letter/enter key (Y=go down, X=go up) and the start button simulates a keystroke on the selected key. On controllers without Y/X keys, select can also be used to roll the virtual keyboard up. The order of the keys in the virtual keyboard is: digits (0->9) then letters (A->Z) then "Space" then "Enter".
| Thomson keyboard | PC keyboard |
|---|---|
| STOP | TAB |
| CNT | CTRL |
| CAPSLOCK | CAPSLOCK |
| ACC | ALT |
| HOME | HOME |
| Arrows | Arrows |
| INS | INSERT |
| EFF | DEL |
| F1-F5 | F1-F5 |
| F6-F10 | SHIFT+F1-F5 |
The emulator can read the following file formats: *.fd and *.sap (floppy disks), *.k7 (tapes), *.m7 and *.rom (cartridges).
SAP files: unless a matching *.fd file already exists, *.sap files are converted on the fly to the *.fd format. The *.fd file is then loaded by the emulator.
By default, the core emulates a TO8 computer. Using the "Thomson flavor" option you can switch to a T08D computer.
The emulator supports libretro's "save state" feature. Under RetroArch, use the following keys: F2 (save state), F4 (load state), F6/F7 (change state slot).
The emulator supports cheat codes with the following format: 0AAAAA:DD with AAAAA the RAM address (in hexadecimal) and DD the value (in hexadecimal) that will be written at the RAM address after each invocation of retro_run().
Cf. the "cheat" directory for some actual cheat codes, as well as a Python script that helps find cheat codes from a set of save state files.
The source code is portable and should compile and run on most platforms. The Travis job checks that the code builds on Linux and MacOS, and the AppVeyor job checks that the code builds on Windows.
| Platform | Compiles | Runs |
|---|---|---|
| Linux / amd64 | ✔️ | ✔️ |
| Raspbian / Raspberry Pi | ✔️ | ✔️ |
| Android | ✔️ | ✔️ |
| MacOS | ✔️ | ❓ |
| Windows | ✔️ | ✔️ |
| Others | ❓ | ❓ |