[Coco] CoCo SDC: SDHC type

[S Klammer]

I'm currently using a 16GB SDHC Class 10 MicroSD (SanDisk, in an adapter)
successfully.  I haven't confirmed; but, believe its default format is
FAT32 and 32K clusters.

I may test further over the next few days as I can borrow a 128GB card
(etc)...

(Don't for the current limitation of 8.3 filenames)

sk
On 2014-03-04 5:06 PM, "Darren A" <mechacoco at gmail.com> wrote:

> On Tue, Mar 4, 2014 at 2:30 PM, Torsten Dittel wrote:
>
> > Is there any limitation regarding the size of the SDHC beside the SDHC
> > (assuming FAT32) 32GB max. size? I remember to have read 8GB max. size
> for
> > the CoCo SDC somewhere, but I can't find that now.
> >
>
> The largest card I have tested with is 8GB but any SDHC capacity that can
> be formatted with FAT32 should work in theory.
>
>
> Is there any advantage / disadvantage regarding perfomance (not waste of
> > space) by using:
> >
> > a) SD vs. SDHC
> > b) FAT16 vs. FAT32
> > c) 4KB vs. 8KB vs. 16KB vs. 32KB cluster size
> > d) Speed class 2 vs. 4 vs. 6 vs. 10
> >
>
> Cluster size is probably the only item that would affect performance of the
> CoCo SDC, and even that would only show up when using very large DSK files.
> Larger cluster sizes allow faster traversal of the FAT when seeking to
> positions far from the beginning of the file.
>
>
> Is there any known incomaptibility to certain SD card type?
> >
>
> One person has reported a problem using an old PNY 1GB SD card, but it may
> have just been a defective card.
>
> Darren
>
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