AT&T 630 terminal - software ??

[Walker Mangum]

In article <379 at bilver.UUCP>, bill at bilver.UUCP (bill vermillion) writes:

> [ ... ]
> 
> A PC doens't seem smart enought to be able to walk and chew gum at the same
> time. :-)  By that I mean that the PC doing 9600bps can't do a decent vt100
> emulation (using Smarterm) and give screen displays that approach that of a
> dedicated terminal.  It had been observed (not timed with a watch but gut
> level reactions) that there was no difference in display speeds between 2400,
> 4800 and 9600.  The difference from 1200 to 2400 was slight.  This was noted
> on an 8mHz AT box with Xenix 2.2.2 and a Computone board as the serial
> handler.

No, the truth is, Xenix 2.2.2 and Smarterm are just very slow gum-chewers.  We
developed a product in 1984 for PC's (running MS-DOS, no less) that does
complete terminal emulation, including <buffered/block/page> mode, that had no
problem at speeds up to 9600, on a 4.77MHz 8088.  On a 6 Mhz AT, the terminal
emulation was able to keep up with the incoming data at up to 19.2k.  We're
now using a 16Mhz 386 clone, and are demonstrating REAL throughput of 115.2k.
That's using a standard PC asynch adapter.

-- 
Walker Mangum                                  |  Adytum, Incorporated
phone: (713) 333-1509                          |  1100 NASA Road One  
UUCP:  uunet!ficc!walker  (walker at ficc.uu.net) |  Houston, TX  77058
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