[Simh] PIP10

[Bob Supnik]

R Voorhoost pointed out on the GitHUB mailing list that PIP10 is working 
correctly.

The issues appear to have been cockpit errors. First, the DECtape must 
be attached with the -F switch, to create an 18b-formatted image. 
Second, the syntax for PIP10 is very finicky. For example, I was trying:

*DTA0:/Z

instead of

*DTA0:</Z

to initialize the tape.

Following his instructions, I've been able to verify PIP10 operation.

/Bob Supnik