how to connect a DECprinter I (LA180) ?
ethan.dicks at usap.gov
Fri Dec 28 12:47:10 CST 2007
On Fri, Dec 28, 2007 at 06:59:28PM +0100, Henk Gooijen wrote:
> > Date: Fri, 28 Dec 2007 15:44:33 +0000> From: ethan.dicks at usap.gov>
Something is wrong with your mail settings - you quoted my message
on a single smashed-up line.
> Thanks Ethan! That was very informative information!
You are quite wlecome.
> True, that blue BERG header is very common, but I ASSumed that
> the printer had a serial interface, which made me think that it
> *could* resemble the DL11 connector.
The LA-120 (DECwriter/printer III) is serial, as is the LA-36, and
a bunch of other LA-xxx printers. I think the LA-180 might be
unique in its naming series to be parallel.
> I did not know that the LP11 interface can be used to connect
> the LA180, but that is great news. I know for sure that I have at
> least two LP11 UNIBUS modules (M7258)...
> and I will check my cable
> storage in the attick. I vaguely remember that I have a cable for
> the LP11!
If you don't have a round cable, you can use a pin-1-to-pin-1
40-pin flat cable. That's what I did for my LPV-11 in 1986.
It was much cheaper to buy meters of bulk cable and two IDC ends
than to get a "real" cable from a DEC reseller.
> One day, I might put the other LP11 interface in my VAX-11/750...!
I seem to recall doing that myself in the late 1980s, under VMS 4.6,
but we also had a "real" line printer we hung off of a DMF-32 DC-37
parallel-out port (sorta like the DKC8AA trick with a PDP-8/a). I
think we had an LP25 at the end of that cable, or an LP26. Either
way, it was a DEC-badged Dataproducts printer that I wasn't able
to rescue when the company folded in the early 1990s - too large
and way too worn out (I'd been limping it along for over 4 years
at that point).
...but I think we did have the LA-180 on the VAX as a backup for
when the ribbon feeder or the paper tractors would freak out on our
line printer. It probably died 3 or 4 times a year, requiring
parts or extended cleaning/tweaking. We ran box after box of
paper through that thing.
As I said previously, the LA-180 works with PDP-8s, PDP-11s
and VAXen, plus with a single-chip interface (a few inverters),
it's possible to hook that same printer up to a "modern"
machine with a parallel port (Amiga, PC...)
Ethan Dicks, A-333-S Current South Pole Weather at 28-Dec-2007 at 18:30 Z
South Pole Station
PSC 468 Box 400 Temp -14.1 F (-25.6 C) Windchill -36.4 F (-38.0 C)
APO AP 96598 Wind 11.8 kts Grid 33 Barometer 684.5 mb (10459 ft)
Ethan.Dicks at usap.gov http://penguincentral.com/penguincentral.html
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