gopsx, a PlayStation 1 emulator written in Go

TODO

• MDEC
• SPU
• Fix the CD-ROM implementation
• Fix the GTE implementation (some of the tests fail)
• Correct CPU pipeline emulation

Usage

1. Get a PlayStation 1 BIOS.
2. To boot the BIOS, run <command> -bios "BIOS_PATH_HERE". The default BIOS path is SCPH1001.BIN for now.
3. To insert a disc, specify it's path with <command> -disc "DISC_PATH_HERE". It should be a .bin file (.cue files are not supported yet)
4. You can see other arguments by running <command> -h. To set boolean arguments, use <command> -arg=true or -arg=false
5. You can run tests by running go test

Status

Implemented:

• CPU
• DMA
• Timers
• Basic CD-ROM implementation
• Gamepad (still needs testing)
• Interrupts
• GPU (not much)
• GTE (very simple implementation, can display the PlayStation logo)

Images

Other

Default keyboard keymappings:

Gamepad	Keyboard
Start	Backspace
Select	Right Shift
DPadUp	Arrow Up
DPadRight	Arrow Right
DPadDown	Arrow Down
DPadLeft	Arrow Left
L2	Keypad Divide
R2	Keypad Multiply
L1	Keypad 7
R1	Keypad 9
Triangle	Keypad 8
Circle	Keypad 6
Cross	Keypad 2
Square	Keypad 4

You can change them in the main.go file, but it would be great to be able to do that from the CLI

Thanks

Special thanks to simias for writing this amazing guide to writing a PlayStation emulator, and to the Nocash PSX spec.