Adjustments made to disk tool

Maker Faire took place these last few days and I was busy volunteering as an examiner for amateur radio license testing, for attendees who wished to get or upgrade their ham radio licenses. Since the FCC requires a ham license to transmit video from a drone, in addition to the usual reasons people become hams, we were fairly busy. I worked the first shift every day. 

ALTO DISK TOOL

While at the ham testing booth at Maker Faire waiting for the show to open to the public each morning, I did some work on the disk tool to clear up the synchronization issues when writing images to disk cartridges. Of course, this requires testing to validate but this looks promising.

I also tweaked the reading logic to be independent of recorded clock pulses from the disk drive once the checksum of each record is read and tested. The Alto switches from the disk drive clock line to its internal clock at this point, just as it uses the internal clock to count off the preamble time before it looks for the sync word beginning each record.