[fpc-devel] FPC for Coldfire and 68K derivatives

[Mike Salish]

I will give that a try in the next week or two. Production deadlines 
prevent me from jumping on it right now.

As far as fitting the compiled output to a generic RTOS embedded system 
it would seem to me that:

Each Pascal main program is treated as a task/process that runs unto 
itself other than by interaction with calls to the OS and any shared 
resources (memory mapped I/O in particular).

Each task needs a initiator program that sets up the stack pointer, 
heap, and possibly a pointer to global stuff. And of course a terminator 
to put it to sleep.

The Pascal program needs to be either linked to a reentrant RTL or to a 
set of RTL sub-programs per task.

Since I'm interested in embedded control there is little I/O to files, 
multiple SIO / USB and net ports. That can be handled by tasks dedicated 
to do so, such as one task per port, with re-entrant code.

Scheduling, time keeping, task control, intertask communications and the 
like are all handled by OS supervisor calls using Traps or illegal 
instruction exceptions.

All in all it isn't an overwhelming amount of work to do, especially 
since I've got that stuff running for CPU32 now and it "just" needs 
conversion to MCF.