Hidden Button Combos
- R1 to boot the cart
- Square to toggle fast/slow serial comms. (115200 vs 518400)
- L1 + Square to enable Debug Mode Placeholder.
PC-Side serial tools
The serial tool to connect to PC is called NOTPSXSerial, or "nops" for short. nops (aka "NotPSXSerial").
- It's included with the boot disc by default.
- You'll need a standard USB to UART dongle. They're like 4 dollars on Amazon.
- It's included with the boot disc by default.
- Works fine on Mac and Linux using mono.
Can I use the parallel port?
Nah, unlikely. It's clunky, awkward, most carts need a voltage level adapter and it's 2021.
Supported functions:
- Upload + Run an .exe
- Upload arbitrary binaries
- Flash .ROM files to your carts
- Write memcards (including FreePSXBoot FreePSXBoot)
- Dump memcards
- Dump RAM
- Watch RAM
- Poke RAM
- Read, Write, Access Breakpoints
- Call/Jump to addresses
- Enter/Exit kernel debug mode
This is not an exhaustive list. See the nops docu for more info.
Hex Editor
- L1 / R1 = back and forward 1 page
- L1 / R1 + Triangle = back and forward a bit further
-
L1 / R1 + Square = back and forward even further
-
R2 = cycle beteween RAM, EEPROM, BIOS, etc
-
X = edit byte
-
L2 = Enter an address manually (hint: get somewhere close via R2 first to save time)
-
Start / Sel = Execute the code starting at the cursor
-
Circle = Exit