Date: Wed, 02 Jul 1997 11:01:36 -0500 From: Ralph Rye <rrye@sparknet.net> To: freebsd-questions@freebsd.org Subject: New Kernel Build Questions Message-ID: <33BA7B60.248B57F9@sparknet.net>
next in thread | raw e-mail | index | archive | help
Hi,
I am new to UNIX in the pc arena ( experienced with sparc stations &
hp900 systems), and I am attempting to build a custom kernel for FreeBSD
2.2.2 and I have some question regarding IRQ settings and and how pci
devices get assigned IRQ.
System layout
Motherboard: TYAN TITAN III
Bios settings:
LPT: IRQ 5 (Connected to Espon
Stylus Color)
Serial Port1: Com 1 IRQ 4
(Connected to MS serial mouse)
Serial Port2: Com 2 IRQ 3
(Connected to Epson line printer)
SCSI Controller: Adaptec 2940 UW
SCSI Devices: Seagate Barcoda 2.1 GB HD
Exabyte 4200 4MM tape drive
Video Card : PCI : STB Nitro 3D
Modem Internel : Sporter X2 : Setting Com4 IRQ 2
Sound Card : AWE32 Not currently pluged in because I do not know
the settings
CDROM : Creative IDE CDROM : connected to primary ide
Floppy Drive : Generic 1.44 mb floppy
Question 1:
In dmesg I see that lpt0 is at 0x278 IRQ 7 but my bois is set to
IRQ 5, should I change the IRQ setting in my kernel config to IRQ 5 or
change my bois. Also dmesg reports that vga0 is on IRQ 7 ( problems
here?).
Question 2:
Does the pci devices automatically get assigned IRQ and
addresses that have not been used yet? I.E. will the bios first look at
all of my devices that use IRQ and reserve those IRQ's and then assign
the remaining to the pci devices?
Question 3:
What are the reserved IRQ's. It looks like the floppy is assigned
"6" and the IDE controller's get "14 & 15" and the system console is
assigned "1". Also I thought I read somewhere that IRQ 2 =9? ( My modem
is assigned IRQ "2")
Question 4:
For my Creative Labs AWE32 sound which is plug & play how can I
find out the settings?
Thanks in advance.
-Ralph Rye
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?33BA7B60.248B57F9>