On 2016-01-01 21:03, Paul Koning wrote:
On Dec 31, 2015, at 3:17 PM, Paul Koning <[email protected]> wrote:
I've noticed that terminal handling on the SIMH console with RSTS/E was never quite
right; it would not do "set terminal/inquire" and editing keys that produce
escape sequences would be mangled.
This turns out to be due to the "printable control characters" configuration
setting. Its default value does not include ESC as a printable character, so it gets
discarded rather than sent to the terminal window.
To fix this, use the following SIMH command:
set console pchar=01000023600
With that setting, escape sequences work properly on the console. Something similar
probably applies to other operating systems and processor types, if they use escape
sequences on the console terminal. The pchar value is octal on PDP11 and other machines
that are conventionally octal; it's hex on VAX and other hex machines, so adjust the
"set" command accordingly.
More... it occurs to me that many operating systems and/or applications do
their own filtering of control characters, so in fact a good setting for the
pchar mask is all ones. In other words, 37777777777 octal or ffffffff hex
depending on the simulated machine.
I wonder if that should be the default, instead of 23600.
I think it should. I have never understood the point of filtering some
characters. That is not what happens on a real system anyway.
Could anyone explain why this exist?
Johnny
--
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: [email protected] || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
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