21 Oct
2005
21 Oct
'05
7:40 p.m.
Subject: Re: Fan for DEC H7861 power supply?
From: ard at p850ug1.demon.co.uk (Tony Duell)
Date: Fri, 21 Oct 2005 23:38:24 +0100 (BST)
To: cctalk at classiccmp.org
Dead plain nothing special.
Allison
I've made a bit of progress with my new 11/73 (got a prompt from
console ODT), but I found a problem. One of the power supply fans is
dead. Anyone know where I can get a replacement fan for the H7861
power supply?
I know DEC used some odd fans in some of their machines (e.g. the 35V
75Hz ones in the 11/44 cabinet), but is there anything particularly odd
about this one? Most of the time you can find something that will replace
them.
-tony 
22 Oct
22 Oct
12:50 a.m.
New subject: Any own an 11/725...?
I know of one person on the list who owns such a beastie, I'm curious if
anyone else owns an 11/725 and would consider possibly selling/trading it?
Curt
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1:04 a.m.
New subject: Any own an 11/725...?
At 12:50 AM -0400 10/22/05, Curt @ Atari Museum wrote:
I know of one person on the list who owns such a
beastie, I'm
curious if anyone else owns an 11/725 and would consider possibly
selling/trading it?
I wish! That's the one VAX of that vintage I'd actually consider
owning. Shoot, I'd love to simply find some good pictures of one!
Zane
--
--
| Zane H. Healy | UNIX Systems Administrator |
| healyzh at aracnet.com (primary) | OpenVMS Enthusiast |
| | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| PDP-10 Emulation and Zane's Computer Museum. |
| http://www.aracnet.com/~healyzh/ |
8:44 p.m.
New subject: Any own an 11/725...?
Try this http://en.wikipedia.org/wiki/VAX
----- Original Message -----
From: "Zane H. Healy" <healyzh at aracnet.com>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>; <General at smtp4.suscom.net>;
<"Discussion at smtp4.suscom.net:"@cnc.net>
Sent: Saturday, October 22, 2005 12:04 AM
Subject: Re: Any own an 11/725...?
At 12:50 AM -0400 10/22/05, Curt @ Atari Museum
wrote:
I know of one person on the list who owns such a
beastie, I'm curious if
anyone else owns an 11/725 and would consider possibly selling/trading it?
I wish! That's the one VAX of that vintage I'd actually consider owning.
Shoot, I'd love to simply find some good pictures of one!
Zane
--
--
| Zane H. Healy | UNIX Systems Administrator |
| healyzh at aracnet.com (primary) | OpenVMS Enthusiast |
| | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| PDP-10 Emulation and Zane's Computer Museum. |
| http://www.aracnet.com/~healyzh/ |
11:20 p.m.
New subject: Any own an 11/725...?
At 7:44 PM -0500 10/22/05, Keys wrote:
Try this http://en.wikipedia.org/wiki/VAX
All I see there is a VAX-11/780 picture, not a VAX-11/725. I'm not
sure, but I don't believe I've ever seen anything other than a
drawing of the VAX-11/725.
Zane
--
--
| Zane H. Healy | UNIX Systems Administrator |
| healyzh at aracnet.com (primary) | OpenVMS Enthusiast |
| | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| PDP-10 Emulation and Zane's Computer Museum. |
| http://www.aracnet.com/~healyzh/ |
11:27 p.m.
New subject: Any own an 11/725...?
All I see there is a VAX-11/780 picture, not a
VAX-11/725. I'm not
sure, but I don't believe I've ever seen anything other than a
drawing of the VAX-11/725.
I have only seen a few, and used one at school years ago. Painfully slow,
I remember, even compared to our overworked /780 and 3600.
William Donzelli
aw288 at osfn.org
11:50 p.m.
New subject: Any own an 11/725...?
William Donzelli wrote:
I have only seen a few, and used one at school years ago. Painfully slow,
I remember, even compared to our overworked /780 and 3600.
I have an 11/730. The 725 was its ugly step sister. Same size I think,
and same unibus. And 110VAC power :-)
-brad
23 Oct
23 Oct
1:10 a.m.
New subject: Any own an 11/725...?
William Donzelli wrote:
The VAX-11/725 was a repackaged version of the VAX-11/730 (smaller box
for OEM usage). 11/725 and 11/730 were the same board set, so
performance was the same, ~1/3 that of an 11/780. Ok for a single user,
not too spiffy otherwise otherwise.
The machine was implemented with lots of first generation 20pin PALs
(which just came to market in the late 70s), and 2901 bit slices for the
main datapath. The '730 was heavily microcoded in a narrow word (24~32b
wide, 16K deep IIRC) style compared to the existing 11/780 (96b wide
microword, 1K-2K deep).
All I see there
is a VAX-11/780 picture, not a VAX-11/725. I'm not
sure, but I don't believe I've ever seen anything other than a
drawing of the VAX-11/725.
I have only seen a few, and used one at school years ago. Painfully slow,
I remember, even compared to our overworked /780 and 3600.
22 Oct
22 Oct
5:34 p.m.
New subject: Any own an 11/725...?
On 10/22/05, Curt @ Atari Museum <curt at atarimuseum.com> wrote:
I know of one person on the list who owns such a
beastie, I'm curious if
anyone else owns an 11/725 and would consider possibly selling/trading it?
Yes, I own one; no I don't want to sell it - it's a nice compact
Unibus machine that one can get running VMS 5.0 with a little
creativity (disk/memory issues).
It runs VMS 4.x great!
If anyone has a spare RC25 cart or two, I wouldn't mind picking one
up... it's likely to be cheaper than a Unibus SCSI interface. ;-)
-ethan
7:07 p.m.
New subject: Any own an 11/725...?
At 10:34 AM +1300 10/23/05, Ethan Dicks wrote:
If anyone has a spare RC25 cart or two, I wouldn't
mind picking one
up... it's likely to be cheaper than a Unibus SCSI interface. ;-)
How hard would it be to get a Unibus working in a VAX-11/725? I
doubt I'll *ever* manage to get one, but if I did, I'd much rather
switch it to SCSI than have to deal with the RC25.
Zane
--
--
| Zane H. Healy | UNIX Systems Administrator |
| healyzh at aracnet.com (primary) | OpenVMS Enthusiast |
| | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| PDP-10 Emulation and Zane's Computer Museum. |
| http://www.aracnet.com/~healyzh/ |
10:36 p.m.
New subject: Any own an 11/725...?
Ethan Dicks wrote:
On 10/22/05, Curt @ Atari Museum <curt at
atarimuseum.com> wrote:
Is there such a thing as a Unibus SCSI?
Peace... Sridhar
I know of one person on the list who owns such a
beastie, I'm curious if
anyone else owns an 11/725 and would consider possibly selling/trading it?
Yes, I own one; no I don't want to sell it - it's a nice compact
Unibus machine that one can get running VMS 5.0 with a little
creativity (disk/memory issues).
It runs VMS 4.x great!
If anyone has a spare RC25 cart or two, I wouldn't mind picking one
up... it's likely to be cheaper than a Unibus SCSI interface. ;-)
11:19 p.m.
New subject: Any own an 11/725...?
At 10:36 PM -0400 10/22/05, Sridhar Ayengar wrote:
Is there such a thing as a Unibus SCSI?
Sure, I've got a Viking UDT board in my PDP-11/44.
Zane
--
--
| Zane H. Healy | UNIX Systems Administrator |
| healyzh at aracnet.com (primary) | OpenVMS Enthusiast |
| | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| PDP-10 Emulation and Zane's Computer Museum. |
| http://www.aracnet.com/~healyzh/ |
23 Oct
23 Oct
1:50 a.m.
New subject: UNIBUS SCSI was Re: Any own an 11/725...?
Zane H. Healy wrote:
At 10:36 PM -0400 10/22/05, Sridhar Ayengar wrote:
And I have an Emulex UC17 (single MSCP or TMSCP SCSI-2 interface) in my
11/34, and an Emulex UC18 (dual MSCP and/or TMSCP SCSI-2 interface) in
my 11/44. Each is a quad SPC unibus board (actually the UC17 is a half
populated UC18).
Both have DEC CDROMs (RRD43s) and Seagate ST32550N (2.1GB 3.5"HH) drives.
S/W development was done under SIMH, then the .dsk image burned to a
CDROM, taken over to the PDP-11 and booted directly from CD (I also now
run XXDP via CDROM as well).
Just got the real 11/44 fully configured (1*DZ11, 1*UC18, 1*DEUNA, 1MB
memory) and able to boot 2.11BSD and get all the way out to the internet
(see below).
My only complaint about UNIBUS SCSI is it seems to border on unobtanium
and thus commands high $$ when found.
Is there such a thing as a Unibus SCSI?
Sure, I've got a Viking UDT board in my PDP-11/44.
Zane >>
>>b du0
(Program)
44Boot from ra(0,0,0) at 0172150
:
: ra(0,0,0)unix
Boot: bootdev=02400 bootcsr=0172150
2.11 BSD UNIX #10: Fri Jun 9 02:08:10 PDT 1995
root at curly.2bsd.com:/usr/src/sys/ZEKE
ra0: Ver 6 mod 6
ra0: RA81 size=4165162
attaching de0 csr 174510
attaching lo0
phys mem = 1048576
avail mem = 686336
user mem = 307200
October 22 22:18:55 init: configure system
dz 0 csr 160100 vector 300 attached
ra 0 csr 172150 vector 154 vectorset attached
tms 0 csr 174500 vector 260 vectorset attached
erase, kill ^U, intr ^C
# Fast boot ... skipping disk checks
checking quotas: done.
Assuming NETWORKING system ...
add host zeke: gateway localhost
add net default: gateway 192.168.1.1
starting system logger
checking for core dump...
Oct 22 22:19:43 zeke vmunix: ra0: Ver 6 mod 6
Oct 22 22:19:43 zeke vmunix: ra0: RA81 size=4165162
preserving editor files
clearing /tmp
standard daemons: update cron accounting.
starting network daemons: inetd rwhod printer.
starting local daemons: sendmail.
Oct 22 22:20:05 zeke October 22 22:20:05 init: kernel security level
changed from 0 to 1
2.11 BSD UNIX (zeke) (console)
login: root
Password:
erase, kill ^U, intr ^C
# netstat -r
Routing tables
Destination Gateway Flags Refs Use Interface
localhost localhost UH 0 0 lo0
192.168.1.19 localhost UH 0 0 lo0
default 192.168.1.1 UG 3 25 de0
192.168.1 192.168.1.19 U 1 6 de0
#
#
# ps axl
F S UID PID PPID CPU PRI NICE ADDR SZ WCHAN TTY TIME COMMAND
3 S 0 0 0 2 0 0 4320 8 runout ? 0:03 swapper
201 S 0 1 0 20 30 0 13034 37 proc ? 0:03 (init)
201 S 0 55 1 0 40 0 22100 11 u ? 0:00 update
201 S 0 58 1 0 26 0 22734 51 selwait ? 0:01 cron
201 S 0 62 1 0 26 -1 31306 26 msgbuf ? 0:00 acctd
201 S 0 70 1 46 26 0 21237 39 selwait ? 0:02
/usr/sbin/inet
201 S 0 74 1 0 26 0 24343 27 proc ? 0:00 rwhod
200 S 0 78 1 16 26 0 136 47 selwait ? 0:00
/usr/sbin/lpd
201 S 0 96 1 0 26 0 14724 71 tracebu ? 0:00
/usr/sbin/send
201 S 0 102 1 0 26 -10 21006 47 selwait ? 0:01 ntpd
201 S 0 105 1 8 28 0 13764 27 dz_tty ? 0:00 -
std.9600 tty
201 S 0 106 1 4 28 0 14322 27 dz_tty ? 0:00 -
std.9600 tty
201 S 0 107 1 3 28 0 15177 27 dz_tty ? 0:00 -
std.9600 tty
201 S 0 108 1 1 28 0 14445 27 dz_tty ? 0:00 -
std.9600 tty
201 S 0 109 1 4 28 0 15622 27 dz_tty ? 0:00 -
std.9600 tty
200 S 0 110 1 3 28 0 2446 27 dz_tty ? 0:00 -
std.9600 tty
200 S 0 111 1 2 28 0 2346 27 dz_tty ? 0:00 -
std.9600 tty
200 S 0 112 1 2 28 0 310 27 dz_tty ? 0:00 -
std.9600 tty
201 S 0 45 1 0 26 0 20444 58 selwait co 0:02 syslogd
201 S 0 104 1 0 30 0 13666 19 proc co 0:03 -sh
1 R 0 120 104 31 51 0 21104 59 co 0:01 ps axl
#
# ping www.apple.com
PING www.apple.com.akadns.net (17.112.152.32): 56 data bytes
64 bytes from 17.112.152.32: icmp_seq=0 ttl=53 time=50.001 ms
64 bytes from 17.112.152.32: icmp_seq=1 ttl=53 time=33.334 ms
64 bytes from 17.112.152.32: icmp_seq=2 ttl=53 time=33.334 ms
64 bytes from 17.112.152.32: icmp_seq=3 ttl=53 time=50.001 ms
64 bytes from 17.112.152.32: icmp_seq=4 ttl=53 time=33.334 ms
64 bytes from 17.112.152.32: icmp_seq=5 ttl=53 time=33.334 ms
^C
--- www.apple.com.akadns.net ping statistics ---
6 packets transmitted, 6 packets received, 0% packet loss
round-trip min/avg/max = 33.334/0/50.001 ms
# ^D
2.11 BSD UNIX (zeke) (console)
login:
2:55 p.m.
I found a replacement fan for the H7861. It is the same size and same
wattage but it has only three blades instead of the five that the
original had. Is this likely to produce enough air flow to prevent
the system from frying itself? Or should I keep looking for a five
blade fan?
On Oct 21, 2005, at 7:40 PM, Allison wrote:
Subject: Re: Fan for DEC H7861 power supply?
From: ard at p850ug1.demon.co.uk (Tony Duell)
Date: Fri, 21 Oct 2005 23:38:24 +0100 (BST)
To: cctalk at classiccmp.org
Dead plain nothing special.
Allison
I've made a bit of progress with my new 11/73 (got a prompt from
console ODT), but I found a problem. One of the power supply fans is
dead. Anyone know where I can get a replacement fan for the H7861
power supply?
I know DEC used some odd fans in some of their machines (e.g. the 35V
75Hz ones in the 11/44 cabinet), but is there anything
particularly odd
about this one? Most of the time you can find something that will
replace
them.
-tony
6853
days inactive
6855
days old
13 comments
10 participants
participants (10)
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ajp166＠bellatlantic.net -
ak6dn＠mindspring.com -
aw288＠osfn.org -
brad＠heeltoe.com -
curt＠atarimuseum.com -
dbetz＠xlisper.mv.com -
ethan.dicks＠gmail.com -
healyzh＠aracnet.com -
jrkeys＠concentric.net -
ploopster＠gmail.com