Another disk imaging project

Jim Leonard trixter at oldskool.org
Fri Sep 12 00:43:32 CDT 2008


Andrew Lynch wrote:
> The intermediate disk signals could, *I believe* be imported into a PC
> parallel port with "clock out" (typically 500 KHz for MFM DSDD, 250KHz for
> FM, etc) being used for latch signal.  I think they are also slow enough to
> be practically captured by the PC parallel port.  The PC could then sample
> the parallel port at high rate (interrupt driven? DMA?) to read the signals
> and create a disk image from the data.  Again, the i8272 would not process
> the signals so they would contain all the data the i8272 processes but will
> not pass along such as header info, IDAM, CRC, true gap length, etc.

The Disk2FDI project has already done this; give it a look to see if it 
applies to your situation.
-- 
Jim Leonard (trixter at oldskool.org)            http://www.oldskool.org/
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