i want to atempt to port FPC to a new CPU target (PIC18F452)

there don't seem to be any guides to starting a port. any idea where one sohuld start when porting fpc.

note: the cpu architecture in question has nowhere near enough power to support the compiler so all compilation for this target will be cross compiliation.

Use an existing target as template, I recommend either arm or sparc.

Start with cpubase then start implementing cgcpu.

Copy all files

Fill all ncpu*.pas methods with dummies.

Update the following units (in this order is the easiest):

cpubase
aasmcpu
cgcpu
cpupara