> Date: Sat, 21 Aug 2010 15:10:34 -0700
> From: Al Kossow <[email protected]>
> On 8/21/10 2:59 PM, dott.Piergiorgio wrote:
>> the real issue is that the assembler and fortran compiler don't work
> Hopefully, Rich will be able to provide some more code from the
> tapes they received from Harlan once the machine is running again.
I'll do what I can, but there is a problem right up front: They did not
use standard DECtapes! They wrote huge data blocks containing 8K words
so that a memory bank could be filled or dumped in a single operation.
They also had two hardware modes installed on the machine which allow it
to execute PDP-9 and bank-mode PDP-15 code, and used the PDP-9/15 operating
system, rather than DECsys-7, for most of the system's history. I'm not
sure that SimH can handle their code without some changes--we'll have to
see once I can begin imaging tapes.
Rich
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