DILOG SQ739 on a VAX4000-600
- From: JF Mezei <jfmezei.spamnot@xxxxxxxxxxxx>
- Date: Mon, 16 Jan 2006 16:32:41 -0500
The breaker tripped on the power bar temporarily feeding my new machines
while they await their permanent location in a cabinet formerly occupied
by my all-mighty Microvax II. (cabinet requires some modifications :-(
So I took that opportunity to install all the boards from the old MVII
to the 4000 that were meant to be transfered. This includes the Dilog
SQ739 QBUS SCSI controller. (and plugged one of the machines elsewhere :-)
Had to check the ADDRESS/CSRs but ended up having to make no changes.
>>> SHOW CONFIG
Showed not only the controller (as a vanilla KDA50 type of controller)
but also the 3 disks that had been configured in the controller's flash memory.
And low and behold, with the magic incantation of:
>>> D/P/L 20088004 80000001
>>> D/P/L 20001F40 20
>>> D/P/W 20001468 0
>>> D/P/W 2000146A 3FFF
>>> S 200
For the sake of documenting this:
The controller's address is 172150
subtract 160000 and you get 12150 in base 8
Convert 12150 to base 16 and you get 1468, then add 2000000 to get
20001468 for the first variable address where you deposit a 0. Then add
4 bytes to get the second address where you deposit 3FFF. (the first 2
commands are fixed).
and I got into the controller's configuration program. Just like on the
old MVII. So it appears that the QBUS functionality/address space is
functionally similar to that of the QBUS.
And yes, as per Mr SMS's message, the boards all seem to work in a non
serpentine way. Bit question now is whether I can put gaps between
boards. (for instance, put the SCSI controller at the very end of the
bus where it is nearer to the connectors and thus make for cleaner
internal wiring.
I have an original quad DHV11, 2 DHQ11 (half the size of the DHV and
greater throughput but otherwise the same), and the SQ739. In that order.
The 4000-500/600 cabinet includes a centronics style SCSI plug. It leads
to a 50 pin SCSI plug on the backplane. I unplugged it from the
backplane and plugged it into the Dilog SQ739. And then plugged the
RRD42 (external) into the centronics plug and voila, a primitive SCSI-1 functionality.
Now, my next steps will be to either find an HSD05, or just use some
ribbon cable to bridge the SQ739 to the backpane SCSI connector and then
continue on to the external centronics connector.
Here is what an RRD42 looks like when connected to the SQ739: (as viewed
from node wheel)
Disk $3$DUA0: (VELO), device type RA82, is online, mounted, software write-
locked, file-oriented device, shareable, available to cluster, error logging
is enabled.
Error count 1 Operations completed
21
Owner process "" Owner UIC [SYSTEM]
Owner process ID 00000000 Dev Prot S:RWPL,O:RWPL,G:R,W
Reference count 1 Default buffer size
512
Total blocks 1296599 Sectors per track
32
Total cylinders 10130 Tracks per cylinder
4
Host name "VELO" Host type, avail VAX
4000-600A, yes
Allocation class 3
Volume label "VAXBINDEC041" Relative volume number
0
Cluster size 8 Transaction count
1
Free blocks 254496 Maximum files allowed
1528
Extend quantity 64 Mount count
3
Mount status System Cache name "_$4$DIA5:XQPCACHE"
Extent cache size 80 Maximum blocks in extent cache
25449
File ID cache size 80 Blocks currently in extent cache
0
Quota cache size 0 Maximum buffers in FCP cache
1163
Volume owner UIC [SYSTEM] Vol Prot S:RWCD,O:RWCD,G:RWCD,W:RWCD
Volume Status: ODS-2, subject to mount verification, write-back caching
enabled.
Volume is also mounted on BIKE, VELO.
On the MVII, I was able to boot from SQ739 served disks. Have not yet
tested this ability.
.
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