[Duo2400] Re: PC card - Duo Laptop conumdrum...

[Gregg Eshelman]

--- Clark Martin <cmmac at sonic.net> wrote:
<clip>
> There are IDE to PC Card adapters that are basically
> just a pair of connectors.

A bit more than that to them. PC Card is based on the
old 16bit ISA PC bus. CardBus is based on the 32bit
PCI* PC bus.

Most PC Card and Compact Flash RAM cards are built to
appear as normal IDE devices, they have a built in
IDE "controller" that interfaces between the PC Card
bus and the internal circuitry of the card that is
pretending to be an IDE type drive.

One thing about the RAM card specification for PC Card
and Compact Flash is there is a signal/pin which
identifies whether or not the card is bootable. Some
IDE to PC Card or Compact Flash adaptors have a
jumper to switch to bootable mode and I've seen one
website where a guy got one he had to modify to make
his old PC laptop boot from a large capacity Compact
Flash card.

*PCI is mostly an Intel design and since PCs are
"little endian" so is the PCI bus. Macintosh computers
are all "big endian". In the chipset of any Mac
with a PCI bus is a "flipper" that swaps the byte
order when data is transferred to and from PCI
devices.

+macintosh +"PC Card reader" +SCSI Plug this into
Yahoo or any search engine and you'll get lots of hits.

=====
"When you are wrestling for possession of a sword, the man with the handle always wins." Hiro Protagonist

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