Good news:
Thanks to hints from David Hinds on pcmcia-cs-3.0.12,
I got my Dell Latitude CPi D300XT working with ethernet
and a Jaz drive. It wasn't easy. Here's a sketch:
1. Ethernet wasn't bad. Because I didn't have an ethernet
card listed in the default RedHat 6.0 list in the install
process, I skipped it. Then I used linuxconf to do it by
hand. I also upgraded to the newest pcmcia-cs-3.0.12,
and also recompiled the kernel with appropriate choices...
2. Problem: the SCSI card was recognized, but it didn't seem
to probe and recognize the Jaz drive. This generated error
messages, and caused the ethernet startup to be delayed,
which was confusing.
3. Turns out that the SCSI card was going after IRQ 10
which was is use I think. So I added an exclude to
/etc/pcmcia/config.opts. While I was at it, I also
completed the blank fields in /etc/pcmcia/network.opts.
4. The problem was identifying the problem. I want to
thank David Dinds for the documentation of pcmcia-cs-3.0.12,
and recommend that anyone having troubles read it pretty
carefully.
Good luck!
jay