24 Sep
1999
24 Sep
'99
12:46 a.m.
No, an 11/53 isn't an 11/23, it uses a J-11 on a
board which also includes
the RAM (typically 1.5MB) and its performance is more like an 11/73 than an
11/23. You'd need BSD 2.11 to have any hope of MSCP support for RDxx or
RX50.
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.
Allison