Thanks Alan and Jon re: linker

I've never written a program that way. I've seen the threads
about the linker but, not being familiar with it, tended to go a
little glassy-eyed. Those threads should still be in my folder.
This current project is quite close to finishing so I'll leave it
alone, but I'll be looking into the linker tutorials for next time

Tell me - if a program is written in a modular style, can you
selectively write a particular module's assembly to the chip ?

IOW, when the modules are compiled, do they always compile
into a single .hex file ? Usually under Programmer/Settings I'd
enter the Start and End address for the whole .hex file that is
produced from a single .asm file. If only a small piece of the
code, eg a single number or data value, is changed, to re-
program just that value in the chip you'd need to find it in program
memory and set the Start/End addresses accordingly. Does
each module in the linker style of programming have its own
Start/End addresses ?

(BTW, to program an 18F452 you need to "Erase Flash Device"
first, which might screw things up)

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