board scan, design reconstruction (was IMSAI)

[dwight elvey]

> From: lynchaj at sbcglobal.net
>
> Hi,
>
> All those S-100 boards definitely sound interesting but here is a twist for
> something I think would be highly useful for recovering data from vintage
> computers using generic PCs.
>
> How about a PCI floppy controller board? Maybe with some supplementary
> logic to allow raw track reads? Possibly a BIOS to boot from? An external
> floppy drive connector?
>
> Just wondering how complicated such a thing would be. Thanks!
>

Hi
 It would be relatively easy if you did most of the work in a DSP chip.
For the floppy end, you need a parallel port to read status and
write controls.
 For reading raw data, a 7474 flipflop, an adjustable clock
and a DSP chip, such as a ADSP2118 or similar.
 Then you'd need a bus interface to the PCI bus.
Dwight

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