hi,

after some more testing, I still can't talk to my Visor, but here is a
more complete description of the situation:

  Hot syncing under Windows works, so it's not the hardware.

  I've now tried to talk to my Visor Prism on two different machines
with different usb controllers:

  1) the on-board USB controller on an Asus P5A-B:

ohci0 at pci0 dev 2 function 0: Acer Labs M5237 USB Host Controller (rev. 0x03)
ohci0: interrupting at irq 9
ohci0: OHCI version 1.0, legacy support
usb0 at ohci0: USB revision 1.0
uhub0 at usb0
uhub0: Acer Labs OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered

  2) an IBM Thinkpad 570:

uhci0 at pci0 dev 6 function 2: Intel 82371AB USB Host Controller (PIIX4) (rev.
0x01)
uhci0: interrupting at irq 11
usb0 at uhci0: USB revision 1.0
uhub0 at usb0
uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered

  When connecting via cu (while the Visor is trying to hot-sync), cu
receives no data (whereas it does receive data when connected to
xcopilot's tty):

uvisor0 at uhub0 port 1
uvisor0: Handspring Inc Handspring Visor, rev 1.00/1.00, addr 2
ucom0 at uvisor0
  <cu -l /dev/ttyU0 dir>
Connected.
  <timeout>
uhub0: port error, restarting port 1
uvisor0: at uhub0 port 1 (addr 2) disconnected
  <^C>
cu: fcntl: Input/output error
ucom0 detached
uvisor0 detached

Disconnected.

  When running pilot-xfer, the kernel detaches ucom0 and uvisor0
immediatly after the timeout, whereas with cu it waits for cu to close
the tty.

  Any ideas?  How can I proceed debugging?

						thanks,
						dillo

  PS: I can consitently panic the kernel by doing the following:

  -) start a hot sync on the visor
  -) run cat /dev/ttyU0
  -) wait for visor to timeout
  -) press ^C

  The first page of a backtrace (I have a dump and can provide further
information):

#0  0xc0322648 in db_last_command ()
#1  0xc025d9d7 in cpu_reboot ()
#2  0xc0128ef5 in db_sync_cmd ()
#3  0xc0128b1c in db_command ()
#4  0xc0128cbe in db_command_loop ()
#5  0xc012ba52 in db_trap ()
#6  0xc025b5c2 in kdb_trap ()
#7  0xc0264e78 in trap ()
#8  0xc0100d45 in calltrap ()
#9  0xc0118d67 in uhci_device_bulk_close ()
#10 0xc02ba5dc in usbd_close_pipe ()
#11 0xc02c14f5 in ucom_cleanup ()
#12 0xc02c0b31 in ucomclose ()
#13 0xc0176436 in spec_close ()
#14 0xc0248471 in ufsspec_close ()
#15 0xc016dfe7 in vn_close ()
#16 0xc016e89b in vn_closefile ()
#17 0xc013ce8c in closef ()
#18 0xc013cc66 in fdfree ()
#19 0xc013e26a in exit1 ()
#20 0xc014564b in sigexit ()
#21 0xc0145413 in postsig ()