Re: SanDisk technical information & Modified CompactFlash adapters

["Lawrence Walker" <lgwalker@xxxxxxx>]

 Jack. As the owner of one of these marvellous little Sharps, I'd like to
voice my appreciation for the research and info you've been providing
to the list. All this stuff is invaluable.

Thank you.

Lawrence

> Here is an interesting page on the SanDisk web site:
> 
> http://www.sandisk.com/tech/oem_design/cf_dc.asp
> 
> It includes a link
> (http://www.sandisk.com/tech/oem_design/cf/CF%20MemMode.ZIP) to a .ZIP
> file full of .PDF files about using their CompactFlash cards in "Memory
> Mapped" mode.  I've been sort of guessing that this is the mode that the
> DIPSSDP.SYS driver for the SanDisk uses, as the original Version 1
> PCMCIA card slots were memory oriented and not so much I/O oriented. 
> Apparently also, the Memory Mapped mode is the initial power-on mode for
> their CompactFlash memory cards.
> 
> I thought that I'd pass the link on for those delving into the workings
> of how the DIPSSDP.SYS driver works at providing flash memory support
> just in case it might be of any help.  I'm currently using the
> unmodified driver with two SanDisk SDCFB-32-455 CompactFlash 32 Megabyte
> cards in DaneElec CompactFlash to PCMCIA adapter carriers.  I might have
> mentioned it before that I've (And if you do the same, it's strictly at
> your own risk!) "peeled" off the top metal shield of each of the
> carriers to eliminate the hollow metal "bump" that was probably put
> there on the metal to allow room for Type II thickness electronics. 
> Doing this got the thickness down close enough to a Type I card that
> they can be easily ejected with the regular Sharp "Eject" slide levers.
> 
> I've attached a small .JPG file that is a picture of what two of the
> modified CompactFlash to PCCARD adapters came out looking like after
> peeling off the top metal cover.  I left the bottom metal covers in
> place for mechanical stability.  Also, at least on the adapters that I
> have, the bottom metal covers were reasonably flat, and didn't have the
> big stamped "bump" that made them so thick like on the top cover.  I
> cropped the photo and really pushed the JPEG compression to keep it as
> small as possible. They look weird, but they fit nicely into (and back
> out of) the PC-3000's slots.
> 
> Best wishes to all,
> Jack
> 
> 


lgwalker@xxxxxxx
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