Hi,
I knew I could count on quick responses. All you need to understand
about the internal bus configuration of these 433au type systems (orginal
posting at bottom) was explained by
Dr. Thomas P. Blinn + UNIX Software Group + Compaq Computer Corporation
"Your system has two "ata" ports (PCI IDE on the Cypress chip) as well as a
QLOGIC based PCI SCSI adapter (isp0 at pci1000 slot 4).
Physically, your QLOGIC SCSI happens to be found after the IDE ports, so the
IDE ports get configured as "logical SCSI" bus 0 and 1, and your QLOGIC is
configured as bus 2.
All of this is done with clever software to make the IDE CDROM look to all
of the important software like a SCSI device; we have a driver that takes
SCSI protocol commands from higher level software and translates them into
IDE commands to send to the device.
There's not a whole lot you need to understand beyond that it's software
that makes it all work. If you plug in more SCSI controllers, they will
configure as scsi3 and scsi4, etc."
Thanks for responses from:
"Monroe, David" <David_at_psds.com
alan_at_nabeth.cxo.dec.com
John Speno <speno_at_isc.upenn.edu>
"Dr. Tom Blinn, 603-884-0646" <tpb_at_zk3.dec.com>
John Pelan <johnp_at_am.qub.ac.uk>
"MacDonell, Dennis" <DennisMacDonell_at_auslig.gov.au>"
Bernt Christandl <beb_at_mpe.mpg.de>
Marco Campani <campa_at_ge.INFM.it>
Other interesting information from one of the responders:
BTW: I've bought 2 pw433-au of the first generation (the DEC
SOC catalog says that they support only one SCSI controller)
and I've successfully added two other SCSI controller with
no problem.
---------------- original posting ----------------------------------
Hello,
I just got in two new 433au workstations. They came with os
preinstalled (4.0D or V4.0 878 alpha)
and with the ~4GB internal scsi disk. When I look at the bus with scu I
get:
# /sbin/scu show edt bus 0 lun 0
# /sbin/scu show edt bus 1 lun 0
CAM Equipment Device Table (EDT) Information:
Device: CD-ROM XM-6202B Bus: 1, Target: 0, Lun: 0, Type: Read-Only
Direct Access
# /sbin/scu show edt bus 2 lun 0
CAM Equipment Device Table (EDT) Information:
Device: RZ1CC-BA Bus: 2, Target: 0, Lun: 0, Type: Direct Access
Now I'm really confused here. How can I have 1 scsi bus that comes with
the system show up with my cd with on bus1 and the disk on bus2. Sure
enough df supports this:
# df -t ufs -k
Filesystem 1024-blocks Used Available Capacity Mounted on
/dev/rz16a 253871 52028 176455 23% /
/dev/rz16g 2034183 777690 1053074 43% /usr
#
Not the usual system disk on bus 0 scsi id 0.
I need to understand this because this 433au model does support 2
additional external scsi adapters which I'm hoping to buy soon.
Below is what shows up at boot:
Jun 17 10:16:59 uhheps vmunix: ace0 at isa0
Jun 17 10:16:59 uhheps vmunix: ace1 at isa0
Jun 17 10:16:59 uhheps vmunix: lp0 at isa0
Jun 17 10:16:59 uhheps vmunix: fdi0 at isa0
Jun 17 10:16:59 uhheps vmunix: fd0 at fdi0 unit 0
Jun 17 10:16:59 uhheps vmunix: ata0 at pci0 slot 107
Jun 17 10:16:59 uhheps vmunix: ata0: Cypress 82C693
Jun 17 10:16:59 uhheps vmunix: scsi0 at ata0 slot 0
Jun 17 10:16:59 uhheps vmunix: ata1 at pci0 slot 207
Jun 17 10:16:59 uhheps vmunix: ata1: Cypress 82C693
Jun 17 10:16:59 uhheps vmunix: scsi1 at ata1 slot 0
Jun 17 10:16:59 uhheps vmunix: rz8 at scsi1 target 0 lun 0 (LID=0)
(TOSHIBA CD-ROM XM-6202B 1110)
Jun 17 10:17:00 uhheps vmunix: ohci0 at pci0 slot 307 (slot 7, function 3)
Jun 17 10:17:00 uhheps vmunix: tga0 at pci0 slot 11
Jun 17 10:17:00 uhheps vmunix: tga0: depth 8, map size 2MB, 1280x1024
Jun 17 10:17:00 uhheps vmunix: tga0: ZLXp2-E, Revision: 34
Jun 17 10:17:00 uhheps vmunix: pci1000 at pci0 slot 20
Jun 17 10:17:00 uhheps vmunix: isp0 at pci1000 slot 4
Jun 17 10:17:00 uhheps vmunix: isp0: QLOGIC ISP1040B/V2
Jun 17 10:17:00 uhheps vmunix: isp0: Firmware revision 5.27 (loaded by
console)
Jun 17 10:17:00 uhheps vmunix: isp0: Fast RAM timing enabled.
Jun 17 10:17:00 uhheps vmunix: scsi2 at isp0 slot 0
Jun 17 10:17:00 uhheps vmunix: rz16 at scsi2 target 0 lun 0 (LID=1) (DEC
RZ1CC-BA (C) DEC 883F) (Wide16)
Jun 17 10:17:00 uhheps vmunix: lvm0: configured.
Jun 17 10:17:00 uhheps vmunix: lvm1: configured.
Thanks in advance, will summarize.
Diane Ibaraki
University of Hawaii
High Energy Physics Group
<diane_at_uhheph.phys.hawaii.edu>
Received on Wed Jul 01 1998 - 20:25:45 NZST