NesterJ for PSP has been updated. Changes according toSmiths/Emuholicare:

2005/06/10 v0.95

  • Altered palette code resulting in faster display
  • Save States support added (10 states in total, numbered 0 – 9)
  • Also, a thumbnail screenshot of each save state will be created upon saving (PSP original function)
  • Thumbnail creation can be toggled via preferences menu
  • 3 screen sizes implemented (full-screen [width only], full screen scanlines [width only], normal)
  • Sound code altered (frequencies, etc.)
  • Player 2 mic button implemented
  • Newly implemented items added to key config menu
  • Rapid-fire rate improved (up to 30x in NTSC mode)

    • http://www.emufanatics.com/view/447/