Zx81 has updated his PSPXTI to version 1.0.3. PSPXTI is a PSP port of XTiger emulator of TI-92 calculator, which originally runs under X windows in UNIX. This emulator works on 2.50 with the eLoader, and should be working fine under v1.50 PSP too. Here is the message from the author on this version:

I've just released a new version of the PSP TI-92 calculator. It works now with TI-92+ v1.1 ROM!
A reset function has been added in the "application file selector window" in order to reset the emulator (but loosing all data in memory).

PedRom, a TI-92 ROM under GNU license, is now included in this package. This ROM is only useful to do basic operations and its capabilities can't be compared to the TI ones.

I've tested this version only with 2.5FW. Nevertheless a 1.5FW version tested by SubZero is also available in this archive.

As always sources are included. I've just released a new version of the PSP TI-92 calculator. We can now load basic and ASM programs (.92x files) directly in this emulator.