On 21 July 2015 at 02:13, glen herrmannsfeldt <g...@ugcs.caltech.edu> wrote:
> OK, I forgot that the Usenet gateway doesn't work anymore.
"Imminent death of the net predicted!"
> I am wondering what software one needs for a 3705 to connect up ordinary
> ASCII terminals.
Typically just EP. But it depends...
> For example, what would be needed to use TSO or Wylbur on
> ASCII terminals? I know this is what was done 35 years
> ago, but I don't know now who knows how to do it.
That's a very different question. As is the matter of where to get the
EP software, assuming you have an actual 3705. And what hardware and
software on the mainframe is going to support connection to this box?
> I do remember that for dial-up lines it would allow for 300
> baud or 110 baud, or even for 2741s, depending on the first
> character you typed.
That wsn't part of IBM standard EP. There were mods, both commercial
("Comm Pro" comes to mind) and installation-written to do this. Lynn
Wheeler has written about this kind of support here.
> Hardwired lines were fixed speed, and could be higher than 300. (I believe O
> for 300 baud, and
> S for 110 baud.)
>
> Faster lines might only be at a fixed baud rate.
Of course you don't need a 3705 to talk to async terminals. A
perfectly ordinary UART such as used to come with every PC is capable
of talking in ASCII or EBCDIC at any reasonable speed, including the
134.5 baud used by the 2741. Many years ago I got my 2741 to print
"hello, world" from a little MS-DOS C program.
Well lots of nostalgia, but what are you really trying to accomplish here?
Tony H.
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