Zx-81 has released a port of TI99Sim for PSP today. TI99Sim is a Thomson TI99 home computer emulator.
Download: PSPTI99 v1.0.1 for CFW 3.X / PSPTI99 v1.0.1 for FW 1.5
How to use it ? Everything is in the readme.txt file.
If you want to convert games etc... have a look to Ti99/sim Web site for more information.
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