Reverse engineering

https://github.com/JaCzekanski/ps1-tests - Collection of PlayStation 1 tests for emulator development

https://github.com/ogamespec/psxdev - Sony PlayStation chips reverse engineering.

https://github.com/Laxer3a/MDEC - Attempt to verilog Implementation of Playstation 1 (PSX) chips.

https://github.com/pgate1/PlayStation_on_FPGA - Playstation on an FPGA

https://github.com/emvivre/Sony-PS1-executable-disassembler - Simple disassembler of Sony Playstation executable (MIPS R3000A instruction set).

https://github.com/Happy-Ferret/sym - Parse Playstation 1 symbol files (*.SYM).

https://github.com/infval/SlowR3KA - PlayStation 1 Disassembler (MIPS R3000A)

https://github.com/MonstersGoBoom/mips32 - mips32 disassembler and maybe emulator at some point

https://macrox.gshi.org/The%20Hacking%20Text.htm - The secrets of professional gameshark hacking

https://github.com/Erick194/PSXDOOM-RE - Doom-RE