Re: Apple ][ using PC floppy

[alex.freed.007@gmail.com]

On Dec 31, 9:30 am, vladitx <vlad...@nucleusys.com> wrote:
> Just by memory, I think with my firmware I have achieved very good
> transfer speed (better than CFFA??), and it can be further increased
> by skipping CRC. Only DMA can provide faster transfer.

Even my undeserving firmware can run very fast for a simple reason:
I do "blind" transfers. I only check the "ready" bit for the first
byte
of a sector. The other 511 bytes are known to be in a buffer and the
AVR is guaranteed to have the next byte ready by the time the 6502
gets around to reading it.

I also think that your CRC is a great feature. Speed is not all that
important in Apple 2 environment, but errors do happen.

-Alex.