3 Feb
2003
3 Feb
'03
12:22 a.m.
Jerome,
oops, seems like I messed up the letters here:
Ethernet? - No, I meant to talk about a serial port. Too long ago, but I
am sure there was no Ethernet involved.
Then what was the serial port called? - XL perhaps? - See how long ago
this was?
The interesting part of this project was that I actually had no idea of
how things like the SET command work. I had to read the documentation
and find out myself. Nobody available to ask. And only a couple of days
to complete the coding.
After spending some time with the manuals, it turned out that there are
only few lines of assembler code required to make things like SET
<whatever> PASS or SET <whatever> NOPASS possible.
I am sure that no Ethernet was involved because we used KERMIT for file
transfer and terminal emulation, and I do remember that you had to SET
<port> NOPASS (back to original behaviour) before KERMIT could use it.
--
Andreas Freiherr
Vishay Semiconductor GmbH, Heilbronn, Germany
http://www.vishay.com
I had been
modifying the XC handler once (we needed a PASSTHROUGH option
for transparent binary serial I/O to support a paper tape punch from
FORTRAN), but this was my closest encounter with "the system" so far.
Everything else was merely porting existing FORTRAN code to RT-11. I
have never looked into monitor data structures, so I'd have to collect
knowledge (RTFM) before I could make useful contributions to a discussion.
I have managed to avoid ethernet under RT-11. Eventually, I will
look at it. But not today.