ZX-81 continues compiling those classic home computers into binaries that fit nicely on your PSP’s memory stick.

First written by Marat Fayzullin and later Vincent van Dam; the emulator porting machine ZX-81 has been maintaining his own PSP port of fMSX. PSPMSX emulates the MSX, MSX2, and MSX2+ 8bit home computers.

Download:
PSPMSX v1.2.4 fw 1.50
PSPMSX v1.2.4 cfw 3.xx
PSPMSX v1.2.4 source code

PSPMSX v1.2.4 changes:

• Add missing keys such as HOME, GRAPH, STOP (Thanks to symBioT for the bug report)
• Auto joystick fire mode, press RTrigger+X to switch it on/off (useful for games such as 1942)
• Add several new hotkeys: settings such as fps, render mode, auto fire speed can now be directly modified inside the emulator (no need to enter in the settings menu); quick save / quick load current state (no need to enter in the main menu)
• Bug fix in the low battery watchdog
• Analog pad can be used in the rom file requester
• RTrigger/LTrigger keys can be used in the keyboard settings menu to navigate between Normal, LTrigger and RTrigger compose mapping.

- source: ZX-81’s web site