RSX-11M trouble

supervinx supervinx at
Wed Apr 6 14:59:39 CDT 2016

Ah, sad and bad news...
Transferred ICP.TSK as usual and checked it with DMP (between simh and
the MicroPDP).
Gave it a try, but got a system crash.
I suspect that the Indirect Command Processor is tightly linked with the

Another curious thing is this...

Dumping the first block with DMP or a Linux/DOS tools gives different

For example:

B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B12 B13 B14 B15 B16

B16 B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1

Byte sequence is reversed. It isn't a Big/Little Endian issue. The
entire 16 bytes string is reversed.

I could figure out what files are needed to reassemble it with MAC, but
I think I'd need the 4.2 distribution...

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