[Coco] Connect CoCo Floppy drive to Windows PC

[Torsten Dittel]

Gene Heskett schrieb:

> [...] this is the first time I've read a cogent explanation of it.  

I once found that explanation here:

http://www.moria.de/~michael/floppy/floppy.pdf

On page 10 it reads:

"[...] The NEC 765 controller goes to sleep for about 1.8ms after the 
index hole is sensed and expects still to read gap 1 when it wakes up. 
It works fine for floppies formatted using the 765, because it will 
always generate the format as specified above. The WD 1797 controller, 
though, does not have a command to format a track, but writes a given 
pattern to the track when formatting it. If the pattern has a too short 
post index gap, for example because it is a format which tries to 
maximise the usable disk space, the 765 controller will fail to read the 
first sector. To make things yet more complicated, the 765A controller 
only sleeps for 0.6ms, which means it is less sensitive to shorter post 
index gaps. [...]"

Regards,
Torsten