24 Sep
1999
24 Sep
'99
4:25 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 |
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