cwbowron is back with another PSP Chess updated. After a few suggestions from people who tried his game on a real PSP, cwbowron made a few changes which should optimize things. Changes:

bitmap handling code changes

changed key press code to use skippy’s Read_Key()

inserted code to handle home button press.

change message about clearing hash tables and switching to search mode

http://forums.ps2dev.org/viewtopic.php?t=1760