On Mon, Feb 22, 1999 at 12:43:54AM -0800, Neil Schneider wrote:
> I appreciate the link, but among all those Thinkpads, not a single
> 600E.
> Been trying for a week to get the last few things working. Sound, apm
> and a 3Com 3CCFEM556B ethernet/modem card. 3Com card seems to be
> unable
> to get enough IRQs to activate both modem and ethernet. I've tried
> several different recipes for web sites for the sound, to no avail.
> Can't
> seem to find a way to disable peripherals, to free up IRQs. Any advice
> or pointers would be appreciated.
Hmmm, there are a couple of things you can do. First off, you need to
disable the internal IrDA if you even want a shot at this. (Or at least,
that's how it worked for me.) The IrDA as shipped occupies IRQ 3 (4?)
and the built-in serial port is the other one. So, without disabling one
of them, you don't have a free IRQ for even a modem card. Otherwise, you
-may- be able to enable IRQ sharing for serial ports on the newer kernels
and have it work. (Never tried it myself.) You'll have to use the PS2
utility from DOS or the Thinkpad config under Windows to enable or disable
any built-in hardware. Also, telling your PCMCIA controller to poll card
status instead of using an IRQ helps a lot. On my Debian system, this
means adding the line
PCIC_OPTS="poll_interval=100"
to the file /etc/pcmcia.conf. My laptop is a 600, so it may be different
than your 600E ... but the sound recipe here is to compile the cs4232
driver as a module, and use the parameters io=0x530, irq=5, dma=1,
dma2=0. The OPL3 is at 0x388, as usual. (You want it as a module
because you have to rmmod/modprobe the drivers to restore sound after a
suspend/resume cycle.)
Hope that helps -- that should free up IRQs 3 (4?) and 10 for your
modem and ethernet, respectively. Disabling peripherals unfortunately
must be done through the DOS/Win utilities, since there's no BIOS support
and IBM hasn't quite had time to port the PS2 utility to Linux yet.
(Although they say they're going to do something like this.) Good luck
-- feel free to email me personally if you like.
--
Anderson MacKay <[EMAIL PROTECTED]>
