[Coco] CoCo IDE update

[Roger Taylor]

I am happy to say that I have the editor part of the CoCo IDE pretty much 
complete.  6809/6309 syntax coloring is working great, which allows you to 
really see your source code better.  There are modes to color different 
classes of words, like psuedo-ops, mnemonics, registers, with different 
colors.  I am adding other classes you can choose when debugging, like 
stack operations, relative instructions, memory transfers, etc.  This will 
allow you to see very clearly the structure of your source code.

Binary files will be possible to add and edit using a nice Hex Editor, 
again, in their own file window just like the .asm files.  Binary files can 
be embedded or includebin'ed by CCASM directly into the codestream during 
assembly.  The program will simply wrap around the data just as if you 
built it with FCB statements, etc.

The assembly and emulation features are being added in now.  I am doing 
rough sessions that assemble a file, copy it to a new virtual disk (JVC) 
and then boot right into M.E.S.S. (coco3h) with the disk mounted.  ROMs are 
also being built and mounted.

My first example ROM Pak is a hello.asm file having an origin of 49152, 
that simply clears the screen and writes a few messages to the screen, then 
loops forever.  To sum it up, I am clicking "build" and watching my source 
code come alive as a ROM Pak in M.E.S.S.   The emulator window just pops up 
on the screen, running the Pak.  This virtual pak could be burned to an 
EPROM.  That is, if it were worth it.  :)

This CoCo IDE will be my most useful piece of software yet.  How smart will 
it be?  My first example floppy disk project will be none other than 
Projector-3.  You will be able to Open the project file, click Go! and the 
massively-coded Projector-3 system will be running in M.E.S.S. within a few 
seconds.  Yes, ofcourse you'll be able to edit P-3 and do whatever with it.