PSP Media Engine Custom Core: Mapper Library.

A project to map the PSP's Media Engine core functions with the purpose of using them in our code.
The idea is simply to make the native kernel/core functions of the media engine available to homebrew developers.

The media engine core is loaded at address 0x88300000, however depending on the device model, it is loaded from a different image which means that addresses are not the same for models prior to the slim. As a solution, we have several static correspondence tables and the code will select the table corresponding to our device before launching the Media Engine.

Usage

Basic Integration

#include "me-lib.h"

void meLibExec() {
  HW_SYS_BUS_CLOCK_ENABLE      = 0x0f;
  HW_SYS_NMI_FLAGS             = 0xffffffff;
  HW_SYS_TACHYON_CONFIG_STATUS = 0x02;
  meLibSync();
  // ... your me code
}

int main() {
  const int tableId = meLibDefaultInit();
  // ... main code
  return 0;
}

Steps:

1. Include the library header
2. Implement meLibExec() with your Media Engine code
3. Initialize the library in main() with meLibDefaultInit()
4. Add hardware initialization as needed in meLibExec()

See related samples available in the samples folder for more information.

Disclamer

This project and code are provided as-is without warranty. Users assume full responsibility for any implementation or consequences. Use at your own discretion and risk

Related work

PSP Media Engine Reload

Thanks

Thanks to:

• crazyc, hlide and other ps2dev members for being pioneers on that subject
• CelestBlue, artart78, zecoxao, davee, xerpi and John (Hedge) for all the information available on psdevwiki and for reversing things
• Kotcrab for reversing things and for Ghidra scripts
• z2442 for the idea!
• Acid_Snake for testing
• All contributors to the PSP Hardware Registers page + the wiki
• Anyone else who contributed through documentation or reverse engineering

m-c/d