About this app
CP Doom is a source port of the classic first-person shooter Doom, built specifically for the CASIO ClassPad II (fx-CP400) running Hollyhock-3. Experience the iconic gameplay on your calculator with optimized performance for the device's hardware.
Features
- Native ClassPad II support: built from the ground up for the fx-CP400 hardware and Hollyhock-3 firmware
- Multiple WAD compatibility: supports Doom Shareware, Registered, Ultimate Doom, Doom II, The Plutonia Experiment, and TNT: Evilution
- Configurable controls: remap all in-game actions to suit your play style via the Options menu
- Integrated file management: automatic WAD detection and loading from the calculator's storage
- Performance optimized: tuned rendering and input handling for smooth gameplay on calculator hardware
Installation
- Download the latest release package from the official repository
- Extract the contents to the root directory of your ClassPad II storage
- Verify the following structure is present:
├── run.bin
├── CPDoom.bin
└── CPDoom/
└── wad/
├── doom1.wad
└── [additional WAD files]
- Launch CP Doom from the Hollyhock-3 application menu
WAD File Support
CP Doom automatically searches for and loads WAD files in the following priority order:
- doom2f.wad (Doom II French)
- doom2.wad (Doom II)
- plutonia.wad (The Plutonia Experiment)
- tnt.wad (TNT: Evilution)
- doomu.wad (Ultimate Doom)
- doom.wad (Doom Registered)
- doom1.wad (Doom Shareware, included)
To use a different WAD, place it in the /CPDoom/wad/ directory and rename any conflicting files (for example, rename doom1.wad to doom1.wad.bak) to prevent the default from loading.
Controls
In-Game Controls
| Key | Action |
|---|---|
| [8] | Move Forward |
| [5] | Move Backward |
| [6] | Turn Right |
| [4] | Turn Left |
| [9] | Strafe Right |
| [7] | Strafe Left |
| [+] | Sprint |
| [EXE] | Fire Weapon |
| [-] | Use Item / Open Door |
| [3] | Next Weapon |
| [1] | Previous Weapon |
| [Shift] | Toggle Map |
All controls can be customized in Options : Controls.
Menu Navigation
| Key | Action |
|---|---|
| [Keyboard] | Open Menu |
| [Backspace] | Return / Cancel |
| [Clear] | Confirm Selection |
| [Up] / [Down] | Navigate Items |
| [Left] / [Right] | Adjust Values |
| [y] / [x] | Yes / No Prompts |
Requirements
- CASIO ClassPad II (fx-CP400 or compatible model)
- Hollyhock-3 firmware
- Approximately 10 MB free storage space
- WAD file (doom1.wad included for immediate play)
Notes
Performance may vary depending on system configuration and overclocking settings. For best results, ensure your calculator is fully charged before extended play sessions. If the application becomes unresponsive, a battery removal will perform a hard reset without affecting stored data.