Ever needed a calculator but too cheap to buy one well never fear you can have one on a 250 dollar piece of.......oh whoops . But in all seriousness ZX-81 has released another emulator for your PSP. It is under GPL copyright so don't worry. However, to run this on a PSP you will need a ROM of the TI- 92 or TI- 92 plus. It has only been tested on 2.5 but ZX is confident that it will work on others.

Download here

kick ass! wish they made it for the 89 titanium...

hum... who wants that on there psp? i mean sure it would be cool, but would u use that in school, and would they let you?