🚀 go-pugleaf

In article <0eR3UD200VsnQrw1om@andrew.cmu.edu> Robert Andrew Ryan <rr2b+@andrew.cmu.edu> writes:
>I am trying to configure some RTs as X terminals to be connected to our
>network via slip.  They are floor models and have two built in serial
>ports, however I have been unable to get reliable results at over 4800
>baud, I get garbage and dropped characters.

I suspect that the RT is overflowing your annex box.  
Or your annex box is overflowing the RT. 

>Also if I have hardware flow control set on in the modem once I connect
>to our annex box it just sits there, if I switch the modem back to
>XON/XOFF and disconnect and re-connect to the modem (before it drops the
>annex connection) I get a bunch of backed up data from the annex.  When
>connected to an RS/6000 9600 baud and hardware flow control seem to work
>ok with the same annex.

Under AIX, it is my understanding that the RT serial port device 
driver does not support hardware flow control.  I have not looked at 
the AOS code, so I am not sure if it suffers the same limitation.

>I seem to remember reading a post here maybe a year ago about the chip
>driving the serial line having only a 1 character buffer, but that it
>was pin compatible with one with a 16 character buffer.  Or was that
>about the 4 port serial card?
>-Rob Ryan

Not sure about that rumor.  

With the VRM/AIX combination, there is quite a bit of buffer space (slack)
to store receiving characters (and its configurable!).  Unfortunately, on
sending, there's no way to throttle the RT.

Regards, Rich Coe
-----
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