[9fans] IBM Thinkpad T21, 3com PCI, no network.

[Adrian Tritschler <Adrian.Tritschler@its.monash.edu>]

After a break of a couple of months, I'm again trying to install plan9 onto an
IBM thinkpad T21.

The only way I can seem to get it booted is to disable ethernet and usb
probing, plan9.ini contains:

pccard0=disabled
pcmcia0=disabled
*noetherprobe=1
*nousbprobe=1

I've managed to install it by downloading the iso file in windows XP,
transferring it to a DOS partition, booting the plan9 floppy, rewriting the
DOS partition type to FAT16 (from "unknown 14") and installing from there.
After all this, and writing a boot floppy, it now boots from the floppy and I
can login as glenda. (with minor glitches "shimmering" in the display,
1024x768x16 seems to be its max.)

HOWEVER, I cannot get the ethernet card recognised.  Either the machine hangs
when I specify "ether0=type=elnk3..." or I enable probing, or I comment these
out and it boots with no network.  "ether0=type=i82557" as suggested at
http://www.acl.lanl.gov/plan9/network/term.html doesn't work either, seems to
result in no card at all being detected.  I think they might have different
inbuilt ethernet cards to me!

I don't have any other machines running plan9 on which to build kernels, but I
can transfer files into this one via WinXP's A: or C: and rebuild there.

Is it just a case of someone mailing me a more recent source file for the 3com
driver and me recompiling it?

Any suggestions?

Windows describes the card as "3Com 10/100 Mini PCI Ethernet Adapter" with the
following features:

PCI Slot 1 (PCI bus 0, device 3, function 0)

I/O range	1800-18FF
Memory Range	E8101400-E810147F
Memory Range	E8101000-E810107F
IRQ		11
MAC		00-01-03-82-xx-xx

The output of plan9's "pci" command is

0.0.0:  06.00.00 8086/7190   0
0.1.0:  06.04.00 8086/7191   0
0.2.0:  06.07.00 104c/ac1b  11
0.2.1:  06.07.00 104c/ac1b  11
0.3.0:  02.00.00 10b7/6056  11 0:00001801 256 1:e8101400 128 2:e8101000 128
0.3.1:  07.80.00 10b7/1007  11 0:00002001 256 1:e8101c00 256 2:e8101800 128
0.5.0:  04.01.00 1013/6003  11 0:e8100000 4096 1:e8000000 1048576
0.7.0:  06.80.00 8086/7110   0
0.7.1:  01.01.80 8086/7111   0 4:00001c01 16
0.7.2:  0c.03.00 8086/7112  11 4:00001c21 32
0.7.3:  06.80.00 8086/7113   0
1.0.0:  03.00.00 5333/8c12  11 0:f0000000 134217728

thanks in advance,

	Adrian