28 Aug
2020
28 Aug
'20
11:28 a.m.
On Fri, Aug 28, 2020 at 11:10 AM Paul Koning via cctalk <
cctalk at classiccmp.org> wrote:
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
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.