fix bug when watching an address (watch was being held until
next memory write).
make it easier to invert SWAP line sense.
discover that C65 dos uses physical tracks from 0, but sectors from 1
adjust FDC emulation so that sectors are relative to 1, not 0.
fix access to sectors on the rear of the disk.
is side sense negative?
add some extra debug switch options to kickstart.
sw13 forces reload rom from sd.
sw12 displays cluster and sectors.
there is a cluster to sector bug to fix that gets tickled
for cluster 0x100 and 0x101 at least.
more rom annotation while tracking things down.