Re: Carte Blanche

[sicklittlemonkey <Nick.Westgate@gmail.com>]

On Apr 3, 4:53 am, Alex Freed <alex_n...@mirrow.com> wrote:
> IFAIK the EDD+ card used a regular controller plus a single (data) wire
> processed by dedicated logic. The same is easy to do on CB. Much easier
> than building a special interface for a floppy with 12V, etc.

It only uses the drive's read pulse line, yes, but the floppy drive
actually connects directly to the EDD+ card as shown here:
http://www.apple2info.net/hardware/edd/edd.htm

The goal with any similar card would hopefully be for a similarly
simple installation, so that software could be captured by an average
user without soldering skills.

For this exact reason I tried to create a one-chip "Poor Man's EDD+"
card by reprogramming the sequencer ROM. At a high enough sampling
rate (2 sequencer clocks/CPU clock) this looks promising, but the
Apple II doesn't have the bandwidth or memory to do much with the
data. (There are other approaches too, but anyway ...)

Of course I can't wait to see how the CB might be used to solve these
problems.

Cheers,
Nick.