From: drew@hamlet.cs.colorado.edu (Drew Eckhardt) Subject: Re: Adaptek SCSI controller and a few other things... Date: Mon, 3 Aug 1992 06:57:49 GMT
In article <Vu9ooB2w164w@owl.isis.org> doug@owl.isis.org (Douglas W Murray) writes:
>Hi all,
>
>I just recently acquired an Adaptek 1542 SCSI controller. I installed
>in the PC and Linux now tells me:
>
> 0 hosts with 0 tapes 0 disks (or something quite close to this)
>
>Am I to assume that it effectively sees the SCSI board? My presumption
If that's not a typo, it isn't seeing the SCSI board. If the Adaptec
driver detects a board, you should get a message like "Host 0 detected
as an Adaptec 1542", and the 0 hosts should read 1 host detected.
>is that since it is _now_ telling me this (wasnt before) that it does
>see it. Some clarification required here...
>
>Assuming that it does see it, what would be this device name? Would have
>to create the new device? If so, how would I go about it? I am not
>familiar enough with *ix to attempt just anything.
SCSI disks are major 8, minor 16 * disk number (0 based, starting with
the first disk found on the bus) + partition number. Partition = 0
for the whole disk, 1-4 for a normal partition, and with the
latest SCSI code 5-15 are extended partition sub-partitions.
mknod name b major minor
will make a device.
See the relevant FAQ's.
>
>A while ago, someone posted that he had been able to get 4 com ports
>working under linux, but that some minor surgery had to be performed
>on the board (secondary I beleive) to properly handle the IRQs. Would
>someone have done this already? If so, could he/she post how to go
>about making the necessary changes to the board in order to get
>com3: and com4: to work?
You can cut traces, and jumper to other IRQ's. Normally, IRQ5
is free if you are not using an 8 bit disk controller, IRQ9 (IRQ2
bus line) will be free if you do not have your graphics board
set to generate retrace interrupts.
Otherwise you will have to use the interrupt lines on the AT connector -
a more difficult proposition.
>
>BTW, I am running version 96c of Linux.
>
>Thank you... Doug!
If you plan on using the SCSI board, get the SCSI drivers from
headrest.woz.colorado.edu:/pub/linux.