Work in progress free firmware substitute

[lyricalnanoha@dosius.ath.cx (Steve Nickolas)]

This is based on some stuff I did a couple years back in C, and then I
rewrote it in ASM.  (A couple short functions are lifted from actual
firmware; it's pretty hard not to copy them though.)  It's horribly buggy,
but is a semi-passable replacement for the F8 portion of an Apple ][+ ROM. 
Some software actually *works*.

http://usotsuki.hoshinet.org/gameware-0.01.zip

The "black code" is "delay" and "pdl" from SimSystem IIe, and "inno" and
"prno" from the Apple ][ monitor.

The debugger is not present in the code.  It's very poorly written and only
supports a minimal amount of mostly documented entry points (I'm not sure
CALL -1184 and CALL -1370 are documented.  Both of them work.)

My ultimate goal would be to create a complete firmware substitute for use
with emulators, to be "clean".  Prolly futile, but meh.  At least I got this
far; 4 years ago when I wrote SDDapple BWOR, I don't think I could have
written this much in 65C02 assembly.  (It does make heavy use of 65C02
opcodes, mostly to save space.)

Also - Although the comments say ProDOS-8 2.x does not work, in the last
test, I *was* able to get it to boot successfully.

-uso.