intraFont is a bitmap font library for PSP using the PSP’s internal font (firmware pgf files).

Changes:

added support for S-JIS string parsing: use flag INTRAFONT_STRING_SJIS in intraFontLoad() (thanks to psp-kaihatu-yotien – I hope that’s his name… )
added pre-caching for ASCII characters: use flag INTRAFONT_CACHE_ASCII in intraFontLoad()
added support for extended ASCII in text strings (e.g. “251” for the (c) copyright symbol)

http://www.psp-programming.com/benhur/