[comp.unix.xenix] Serial I/O Drivers for SCO

phile@lgnp1.LS.COM (Phil Eschallier) (04/10/89)

hello out there ...

i am using a 12mhz 80286 for a lot of mail and news transfer.  the problem
is this ... at any baud rate, the thru-put of outbound data is always much
high than the thru-put for inbound data -- this is at any baud rate from
1200 thru telebit PEP (19200 or 9600).

with the telebit at 19200 baud, i get outbound rates as high as 1875 but
inbound rates suck -- about 600+ chars/sec.

i am using a standard ibm com port and would like better thru-put for
incoming data.  my feeling is that the problem is in the device driver
but i do not know much about such things -- can anyone help??  has anyone
written a new device drive (either pd or commercial)??

btw -- a smart i/o board is not a possibility at the time -- due to lack
       of $$$$$$.

thanx for any help ...

-- 
Phil Eschallier                                        | Lagniappe Systems
(Preferred E-mail): { root | phile }@LS.COM            | 1011 New Hope St. #87c
                or: ...!rutgers!lgnp1!{ root | phile } | Norristown, PA  19401
       (alternate): phile@PRA.COM                      | (215) 279-1114 (8a-1p)

davidsen@steinmetz.ge.com (Wm. E. Davidsen Jr) (04/12/89)

In article <991@lgnp1.LS.COM> phile@lgnp1.LS.COM (Phil Eschallier) writes:
| 
| i am using a 12mhz 80286 for a lot of mail and news transfer.  the problem
| is this ... at any baud rate, the thru-put of outbound data is always much
| high than the thru-put for inbound data -- this is at any baud rate from
| 1200 thru telebit PEP (19200 or 9600).

  Three things you should do:

1) if you don't have the uucp upgrade call support and ask for it. You
   don't need it if you have HDB.

2) follow the notes and set your "windows" to seven instead of three.

3) some patches were posted within the last month or so to do this, you
   may still have them online.
-- 
	bill davidsen		(wedu@crd.GE.COM)
  {uunet | philabs}!steinmetz!crdos1!davidsen
"Stupidity, like virtue, is its own reward" -me