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- Path: sparky!uunet!zaphod.mps.ohio-state.edu!swrinde!gatech!concert!rutgers!njitgw.njit.edu!hertz.njit.edu!dic5340
- From: dic5340@hertz.njit.edu (David Charlap)
- Newsgroups: comp.os.os2.apps
- Subject: Re: Can a DOS comm. TSR be set above 9600bd ?
- Message-ID: <1993Jan11.204008.28876@njitgw.njit.edu>
- Date: 11 Jan 93 20:40:08 GMT
- References: <1993Jan11.171247.229@cmu.unige.ch>
- Sender: news@njit.edu
- Organization: New Jersey Institute of Technology, Newark, N.J.
- Lines: 24
- Nntp-Posting-Host: hertz.njit.edu
-
- In article <1993Jan11.171247.229@cmu.unige.ch> cohen@cmu.unige.ch writes:
- >I am experiencing problems running a DOS communication TSR in
- >a VDM dos 5.0. Indeed, I cannot use a baud rate faster than 9600.
- >Can anybody give some advice in order to rise it up to 57Kbd or
- >eventually even 115200 ?
-
- Not without changing a piece of OS/2. OS/2 will not (or can not)
- provide a DOS box more than 1000 interrupts per second. 9600 baud
- requires (at no parity, 8 data bits, one stop bit, one start bit) 960
- interrupts per second to receive a continuous stream. Faster speeds
- will go beyond the limit and fail.
-
- Note, you can set the port to faster, and you can certainly send data
- at those speeds, but receiving at high speeds will require interrupts
- to go faster than OS/2 allows. Either use real DOS or an OS/2 comm
- program.
-
-
-
- --
- |) David Charlap | .signature confiscated by FBI due to
- /|_ dic5340@hertz.njit.edu | an ongoing investigation into the
- ((|,) | source of these .signature virusses
- ~|~
-