24 Sep
1999
24 Sep
'99
1:25 a.m.
Didn't check the MicroPDP-11 book on this one. All
the 11/53 boxes I've
seen either had 11/23B or the earlier no ram-nonPMI 11/73 cpu in them.
Apparently that was a common configuration or the common path for the
used boxes. in any case most of the 11/23 or 11/73 cpus work quite
nicely in that box.
That may be the *boxes* which have been marked that way... which sounds
like someone was mislead (or the system reconfigured without someone
knowing)
*NO* 11/53[+] board that I know of has EVER had an F-11 on it. They
have all had J-11 (DCJ11) chips. The 11/53[+] has always been a quad
width board with two serial lines and either .5Mbyte (11/53) or 1.5Mbyte
(11/53+). It is known as the KDJ11-D (the -A is the dual-width
11/73 board, the -B is the quad width 11/83,84 board and the -E is
the quad width 11/93,94 board).
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com |
| Unix Support Engineering Group | (home): mbg!world.std.com |
| Compaq Computer Corporation | addresses need '@' in place of '!' |
| 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ |
| Nashua, NH 03062 | "pdp-11 programmer - some assembler |
| (603) 884 1055 | required." - mbg |
+--------------------------------+-------------------------------------+
10:33 a.m.
That may be
the *boxes* which have been marked that way... which sounds
like someone was mislead (or the system reconfigured without someone
knowing)
After all it was DEC internal!
11:29 a.m.
According to a friend who worked in Field Circus, if
the systems were
inside DEC, that made it much MORE likely that they were entirely
non-standard configurations that bear no relationship to the label
on the outside of the box.
Yep...
One of my favorite non-standard systems was a GT40 (11/05 with VT11
built in and VR14 display for graphics) which had a unibus-out cable
which ran to a bay of *three* corporate tall cabs full of devices.
It worked, but FS disn't want to touch it.
We had that in the RT-11 'Cave' in the Mill (on ML5-5)
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com |
| Unix Support Engineering Group | (home): mbg!world.std.com |
| Compaq Computer Corporation | addresses need '@' in place of '!' |
| 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ |
| Nashua, NH 03062 | "pdp-11 programmer - some assembler |
| (603) 884 1055 | required." - mbg |
+--------------------------------+-------------------------------------+
12:56 p.m.
New subject: GT40
According to a friend who worked in Field Circus,
if the systems were
inside DEC, that made it much MORE likely that they were entirely
non-standard configurations that bear no relationship to the label
on the outside of the box.
Yep...
One of my favorite non-standard systems was a GT40 (11/05 with VT11
built in and VR14 display for graphics) which had a unibus-out cable
which ran to a bay of *three* corporate tall cabs full of devices.
It worked, but FS disn't want to touch it.
We had that in the RT-11 'Cave' in the Mill (on ML5-5)
Megan Gentry
Former RT-11 Developer
9221
days inactive
9221
days old
4 comments
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participants (4)
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allisonp＠world.std.com -
eric＠brouhaha.com -
mbg＠world.std.com -
pechter＠pechter.dyndns.org