The NEC 765, and presumably all of the "compatible" alternatives do a
"reset" on seeing the index pulse. That makes many "crowded"
formats,
such as Cromemco, TRS80, etc. difficult to read on PC.
If feasible, PLEASE consider having that overrideable in software, so that
it is possible to read immediately after the index.
WD 179X has a "track read" command.
NEC does not. "read multiple sectors" is nice, but it doesn't let you see
intersector gaps, address marks, and MFM without "IBM/WD" sector headers.
Is it feasible to implement?
--
Grumpy Ol' Fred cisin at
xenosoft.com