The revision 3423 of the emulator jpcsp was released and built. Here are the download links:

windows-x86-32: http://rapidga...x86-32.7z.html
windows-x86-64: http://rapidga...x86-64.7z.html
linux-x86-32: http://rapidga...x86-32.7z.html
linux-x86-64: http://rapidga...x86-64.7z.html
macosx: http://rapidga...macosx.7z.html

Code:
Texture functions TFUNC_FRAGMENT_DOUBLE_TEXTURE_EFECT_UNKNOWx have the same behavior as TFUNC_FRAGMENT_DOUBLE_TEXTURE_EFECT_ADD. Tested on PSP using 3DStudio.
check out the Live Downloads section for more builds

http://www.jpcsp.org/