On 2014-01-15 15:17, Brian Schenkenberger, VAXman- wrote:
Mark Wickens <mark at wickensonline.co.uk> writes:
So, out of interest, what was the last/most reliable/most desirable DEC
true line printer - i.e. chain/band rather than matrix?
My first year at college ~ 1990 included VAX/Pascal programming with
assignments printed to a true line printer.
Happy times in that lovely warm computer room on cold, dark winter days...
IMHO, the LXY21!
Never used that one, but my experience with the LP26 and LP27 are good. I never had any problems with them. Never had problems with the LP14 either, as far as I can remember, but it was a beast.
Johnny
On Wed, 15 Jan 2014, Dave McGuire wrote:
On 01/15/2014 06:57 PM, Cory Smelosky wrote:
Note that these are larger-than-normal racks, and they're very
difficult to move. They weigh about 1200lbs. I've moved a pair of
these machines by myself without proper equipment, and thus at great
personal risk, to my old place a few years ago. I did so out of
necessity. The story (with pics) is here:
http://www.neurotica.com/wiki/Sun_Fire_6800_Unload
DO NOT TRY THIS AT HOME. I could very easily have gotten killed in
that operation. "Regular" racks are one thing...these weigh well over
half a ton, and are a different matter entirely.
Well, I'll stick it in the room where a piano used to sit. It should
hold there. ;) (Also no need for stairs, then.)
Measure the doorways. I have to rent special trucks to move 6800s due
to their height. If memory serves, they are 76" tall.
I think that would barely fit. Maybe i'll want to build a little shed for it. ;)
I could also fairly easily rig something up with a switch to change
between that and the oven, then...as nowhere else would I have minimum
30A service save for upstairs and the air conditioner. ;)
You'll have to do more than that. That machine has FOUR 230V 30A
power cables. It can run on two.
That would be a bit harder to manage. ;)
Getting to 230V is easy. Getting to 230V with 30A each is harder.
-Dave
--
Cory Smelosky
http://gewt.net Personal stuff
http://gimme-sympathy.org Projects
On 01/15/2014 06:57 PM, Cory Smelosky wrote:
Note that these are larger-than-normal racks, and they're very
difficult to move. They weigh about 1200lbs. I've moved a pair of
these machines by myself without proper equipment, and thus at great
personal risk, to my old place a few years ago. I did so out of
necessity. The story (with pics) is here:
http://www.neurotica.com/wiki/Sun_Fire_6800_Unload
DO NOT TRY THIS AT HOME. I could very easily have gotten killed in
that operation. "Regular" racks are one thing...these weigh well over
half a ton, and are a different matter entirely.
Well, I'll stick it in the room where a piano used to sit. It should
hold there. ;) (Also no need for stairs, then.)
Measure the doorways. I have to rent special trucks to move 6800s due
to their height. If memory serves, they are 76" tall.
I could also fairly easily rig something up with a switch to change
between that and the oven, then...as nowhere else would I have minimum
30A service save for upstairs and the air conditioner. ;)
You'll have to do more than that. That machine has FOUR 230V 30A
power cables. It can run on two.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
On 2014-01-15 14:18, Brian Schenkenberger, VAXman- wrote:
Johnny Billquist <bqt at softjar.se> writes:
On 2014-01-14 03:44, Sampsa Laine wrote:
sampsa <sampsa at mac.com>
mobile +44 7961 149465
On 14 Jan 2014, at 13:42, "Brian Schenkenberger, VAXman-" <system at TMESIS.COM> wrote:
Sampsa Laine <sampsa at mac.com> writes:
Anybody know what happened with that discussion re: EISNER and HECnet?
Also, is EISNER even up any more? I can't seem to connect to it.
EISNER is being or has been physically relocated. Once it is back up, I'll
see what can be done about getting it connected to HECnet. I have no idea
what'll be available network-wise/router-wise until EISNER is back on-line.
Mind you with such a large change anyway, it might be a good time to "sneak in" the connection to HECnet :)
I totally dislike the "sneak in" comment. If it is going to happen, it
must be done very openly and consciously. Noone will benefit from trying
to sneak something in.
Once Eisner has been reconnected and revived -- seriously, I do not know
why this relocation effort is taking so long -- I will communicate with
the new caretakes about their router config; hopefully, it's a Cisco box
that can support the DECnet tunnel. I doubt that there would be a Linux
box there that would serve as a gateway.
If they are running Multinet, you could also setup a link using that.
Johnny
On Wed, 15 Jan 2014, Dave McGuire wrote:
On 01/15/2014 06:42 PM, Cory Smelosky wrote:
A lot of people (myself included) insisted on direct-in-the-bus
printer controllers when we saw how badly serial printers tanked the
system when we connected them to DZ11s. ;)
Oh I can imagine that. A dedicated controller would have MUCH higher
bandwidth than the <1.5mbitcapable on the DZ11. ;)
It's the interrupt load that's the problem. It could TANK an 11/750.
Didn't the DZ11 depend on the CPU for interrupts?
Every interrupt depends on the CPU. ;)
True...but offloading helps cut down on the other stuff it needs to process. ;)
Isn't that why say...the DHV11 had processors to offload serial
processing to?
The DHV11 has a pair of 8051s on it. The DH11 is several boards full
of logic. It has buffering and DMA capability to offload the host
system...it needs much less hand-holding than the DZ11.
Ahh. I thought it was something like that.
-Dave
--
Cory Smelosky
http://gewt.net Personal stuff
http://gimme-sympathy.org Projects
On Wed, 15 Jan 2014, Dave McGuire wrote:
On 01/15/2014 06:41 PM, Cory Smelosky wrote:
I'll gladly take a 6800. ;)
I can make COMPLETE use of 24 processors! As it'll take a IV...that's
dual-core right? Meaning...48 cores!
Even the processors that are in them have GREAT BIG CLANGING BALLS. I
just have no use for them here. If you want one, you can have one. I
will deliver it to your driveway, but you must bear the expense. That
will primarily consist of truck rental fees and fuel. I could probably
get one to you for about $250.
That isn't that bad. I could handle that with time.
Note that these are larger-than-normal racks, and they're very
difficult to move. They weigh about 1200lbs. I've moved a pair of
these machines by myself without proper equipment, and thus at great
personal risk, to my old place a few years ago. I did so out of
necessity. The story (with pics) is here:
http://www.neurotica.com/wiki/Sun_Fire_6800_Unload
DO NOT TRY THIS AT HOME. I could very easily have gotten killed in
that operation. "Regular" racks are one thing...these weigh well over
half a ton, and are a different matter entirely.
Well, I'll stick it in the room where a piano used to sit. It should hold there. ;) (Also no need for stairs, then.)
I could also fairly easily rig something up with a switch to change between that and the oven, then...as nowhere else would I have minimum 30A service save for upstairs and the air conditioner. ;)
-Dave
--
Cory Smelosky
http://gewt.net Personal stuff
http://gimme-sympathy.org Projects
On 01/15/2014 06:42 PM, Cory Smelosky wrote:
A lot of people (myself included) insisted on direct-in-the-bus
printer controllers when we saw how badly serial printers tanked the
system when we connected them to DZ11s. ;)
Oh I can imagine that. A dedicated controller would have MUCH higher
bandwidth than the <1.5mbitcapable on the DZ11. ;)
It's the interrupt load that's the problem. It could TANK an 11/750.
Didn't the DZ11 depend on the CPU for interrupts?
Every interrupt depends on the CPU. ;)
Isn't that why say...the DHV11 had processors to offload serial
processing to?
The DHV11 has a pair of 8051s on it. The DH11 is several boards full
of logic. It has buffering and DMA capability to offload the host
system...it needs much less hand-holding than the DZ11.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
On 01/15/2014 06:41 PM, Cory Smelosky wrote:
I'll gladly take a 6800. ;)
I can make COMPLETE use of 24 processors! As it'll take a IV...that's
dual-core right? Meaning...48 cores!
Even the processors that are in them have GREAT BIG CLANGING BALLS. I
just have no use for them here. If you want one, you can have one. I
will deliver it to your driveway, but you must bear the expense. That
will primarily consist of truck rental fees and fuel. I could probably
get one to you for about $250.
Note that these are larger-than-normal racks, and they're very
difficult to move. They weigh about 1200lbs. I've moved a pair of
these machines by myself without proper equipment, and thus at great
personal risk, to my old place a few years ago. I did so out of
necessity. The story (with pics) is here:
http://www.neurotica.com/wiki/Sun_Fire_6800_Unload
DO NOT TRY THIS AT HOME. I could very easily have gotten killed in
that operation. "Regular" racks are one thing...these weigh well over
half a ton, and are a different matter entirely.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
On Wed, 15 Jan 2014, Dave McGuire wrote:
On 01/15/2014 06:35 PM, Cory Smelosky wrote:
A lot of people (myself included) insisted on direct-in-the-bus
printer controllers when we saw how badly serial printers tanked the
system when we connected them to DZ11s. ;)
Oh I can imagine that. A dedicated controller would have MUCH higher
bandwidth than the <1.5mbitcapable on the DZ11. ;)
It's the interrupt load that's the problem. It could TANK an 11/750.
Didn't the DZ11 depend on the CPU for interrupts?
Isn't that why say...the DHV11 had processors to offload serial processing to?
-Dave
--
Cory Smelosky
http://gewt.net Personal stuff
http://gimme-sympathy.org Projects
On 01/15/2014 06:39 PM, Brian Schenkenberger, VAXman- wrote:
Yup. 'Twas still a nice line printer. I printed walls of boxes of greenbar
on the LXY21.
Glorious machines. I have two here; one DEC-badged and one Printronix
badged. The DEC-badged one is in pretty bad shape but may be
recoverable. The Printronix-badged one is nearly pristine and works great.
We should do a group buy of greenbar paper. I am running low.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
