Merge softuart/cpm back into trunk:
* cpm/bios.asm:
- read/write: Get error code from avr part and return it to caller.
- Added dph/dpb for ramdisk.
- boot: If ramdisk exists, clear directory area, and copy ccp+bdos from boot disk.
- wboot: Load system from ramdisk, if feasible.
- Added print hex and reorderd functions to ease debugging.
* cpm/ipl.asm
- Increased number of sectors to load from 49 to 51 (= all reserved sectors).
* cpm/Makefile:
- oflag=direct removed from installcpm target.
git-svn-id: svn://cu.loc/avr-cpm/trunk@63
57430480-672e-4586-8877-
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