CF cards on classic machines (was Re: Another disk imaging project)

[Paul Koning]

>>>>> "Jim" == Jim Brain <brain at jbrain.com> writes:

 Jim> You can only do 8-bit mode when in CF "memory mapped mode".
 Jim> But, as that requires the same amount of lines and precludes the
 Jim> support of IDE disks in a project, many opt to use True IDE
 Jim> mode.  In IDE mode, you have to send and receive data in 16 bit
 Jim> chunks...

No... the classic PIO mode IDE registers are 8 bits wide, not 16.
Some devices may allow 16 bit access as an optimization, but 8 bit
accesses is all you need.  

	 paul