Unofficial CNReader 1MHz for the PSP
From the home page:
I don't understand why the author doesn't rev it up to 222 for the loading operation and then throttles it back down to 1 Mhz. Also functions like search would help from using a higher clock frequency just for that action.
You may be interested in the name of the program. Yes, this homebrew runs with both CPU clock frequencies reduced to ONLY 1MHz! Which means the battery life will be extremely extended to more than 10 hours when using this program. But how about the performance? The actual loading time of a 7MB file at 1MHz is 6 to 7 seconds, while 1.53 seconds at 222MHz. Not bad!!