[Simh] Problem with reading tape with PDP-11 SIMH

[Timothe Litt]

On 21-May-15 17:12, Alan Frisbie wrote:
> If this is happening, some adjustments to the behavior of the
> TS device can potentially be made to slow it down.  Try
> "sim> DEP TS TIME 5000" or change 5000 to some other large number
> (the default is 10).
>> I will try this and let you know what happens.
> I tried this, and it appears to fix the problem!   At least TPC
> completes and has created a file of approximately the right size.
That indicates that RSX (probably not the user mode program) has an issue
with I/O that completes too fast.  Not surprising.

You might do a binary search and find the right threshold delay value. 
That + a modest buffer should become the default. 


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