The PIC16 port claims to support the 18F2550, 18F4331,
and 18F4455, but pic18fregs.h gives the error
"Unsupported processor" because there are no
corresponding header files for these chips.
Also, can building and installing the pic16 libraries
and includes be an option through the configure script?
Having to build and install them manually in the
source tree seems unnecessary when the autoconf
facility already exists for this type of compile-time
This is SDCC 2.5.0.... would love to see a 2.5.1 with
cleaner pic16 support.