add addresses of static drivers of the runtime
add missing stddrv defines for atarixl
Merge pull request #74 from groessler/something_to_pull

Atari: add addresses of static drivers of the runtime
make "ZEROPAGE" segment optional
Merge pull request #75 from groessler/something_to_pull

make "ZEROPAGE" segment optional
add ZEROPAGE segment to apple2-asm.cfg and c64-asm.cfg
add EXTZP segment to atari-asm.cfg
Merge pull request #76 from groessler/something_to_pull

add some missing segments to *-asm.cfg files
Avoid indirect jmp with unknown vector address.
Added 'install' target.

The 'install' target primarily aims to support pacaking tools. Therefore...
- It just presumes a "capable" install program to be present.
- There's intentionally no 'uninstall' target.
small comment change
Disable the high frequency mouse polling IRQ while the system does
time critical things (CRITICAL flag set).
Merge pull request #78 from groessler/something_to_pull

change mouse drivers to be more "floppy access" friendly