Re: PC to Apple II disk drive

[Linards Ticmanis <ticmanis@gmx.de>]

Jack Tseng wrote:
> Not always, like Atari 8bit Disk drive is a drive, not a computer with its 
> own cpu, there is NO DOS programmer in ROM. It requires Atari DOS software 
> to boot up. PC can communicate with the dumb disk drive in APE SIO cable 
> with a serial connection. APE SIO cable looks simple I can make.
> 
> Apple Disk Drive seems more more diffcult than C1541 and Atari 1050.

But Atari still has a SIO bus, which is a serial bus not all that
different from the C1541's IEC bus. The Apple drive has no bus at all -
just a read line and a write line, an on/off line, a write enable line,
a write protect sense line, and four lines to activate the four coils in
the stepper motor. Maybe I'm forgetting something, but you will agreee
it is a very different kind of interface, much more low-level.

-- 
Linards Ticmanis