Looking for an IDE simulator

[Warner Losh]

On Fri, Aug 28, 2020 at 11:10 AM Paul Koning via cctalk <
cctalk at classiccmp.org> wrote:

>
>
> > On Aug 28, 2020, at 12:15 PM, David Bridgham via cctalk <
> cctalk at classiccmp.org> wrote:
> >
> >
> >> in an online search - the CFADPTHD seems like it's close to what I'd
> want,
> >> except it's Compact Flash; I'd have preferred SD but I guess converting
> >> their interface to IDE is more work.
> >
> >
> > Yeah, I think Compact Flash actually uses the IDE protocol just with a
> > different form-factor while SD cards are their own thing so a conversion
> > from SD to IDE is a whole lot more work.
>
> Correct.  CF cards talk to a SATA controller, you just have to adjust the
> pinout.
>
> SD is a packet based storage device on a serial interconnect, minimally
> one lane wide but it can also be four lanes (and that's typically how you
> use it).  Apparently it starts out in a SPI compatible mode, interesting.
> Also, SD requires a rather complex handshake at power up to get to the
> point where you can do I/O.
>

There's a number of SD to PATA adapters though where all this goo is put
into a chip and you don't worry too much about it... I've used these and
they are as good as the SD card you put in them...

Warner