Mon Nov 15 11:52:19 EST 2010
Picking up again
I'd like to pick it up again, probably restructuring and documenting
the code. The goal is to work towards a USB driver for the PIC18 with
a middle point that implements a proper debugging interface and emacs
Meaning, the compiler seems to be working fine, now make the
interaction system a bit less messy.
First, what's with this module business?
A "staapl pic18/serial" line is equivalent to "(require (planet
This defines a couple of macros like "macro/async.>tx" and target
words like "target/async.>tx"
The macros are code generation/transformation functions while the
target words are compiled target code.
One of the most important features of modules is to make sure all
names are bound at compile time. I.e. I just converted an old usb.f
file to __usb.ss including the top line:
#lang planet zwizwa/staapl/pic18 \ -*- forth -*-
This then allows compilation with "mzc __usb.ss", giving an error in
/home/tom/staapl/staapl/pic18/__usb.ss:23:6: compile: unbound identifier in module in: macro/UIE