27 Sep
2020
27 Sep
'20
7:12 p.m.
Great point. Does a VT100 have a pass-through serial port? Maybe the development machine
was connected to a pass through serial port on a terminal and then sent command to the
DEC-20 to send the files. So there would have been some sort of connection from the DEC-20
to IBM. Leased line? Packet switched?
A great puzzle.
http://www.classiccmp.org/cini
Long Island S100 User?s Group
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________________________________
From: cctalk <cctalk-bounces at classiccmp.org> on behalf of Dennis Boone via cctalk
<cctalk at classiccmp.org>
Sent: Sunday, September 27, 2020 10:03:23 PM
To: cctalk at classiccmp.org <cctalk at classiccmp.org>
Subject: Re: SCP/Microsoft 20HAL uploader
Excellent! That's a great piece of info. Not sure
why a TOPS-10
command would be embedded in a program like this. The notion of
filtering/delay itself makes sense but that command would make sense
only if IBM had a DECSYSYEM too, no?
That part's a puzzler. Perhaps the link was from the PC to the MS
DEC-10 and thence out to IBM?
De