[comp.os.msdos.misc] DOS 3.3 keyboard driver and 19200 baud

ej@kos.rci.dk (Erik W. Jeppesen) (11/01/90)

It seems to be a well-known feature of DOS 3.3 that at
19200 baud you will loose characters when you are using
the keyboard.

The problem is in the new DOS 3.3 keyboard driver which
supports different codepages. It will go away (the problem)
if you install the old DOS 3.2 keyboard driver.

Does anyone know the exact reason of this problem and whether
there is a patch or a workaround (other than using the old
driver which does not support codepage 850)?

Any information would be appreciated.

Thanks,
-- 
Erik W. Jeppesen          ej@rci.dk         +45 42 65 80 00
RC International, Lautrupbjerg 1, DK-2750 Ballerup, Denmark

hartnegg@sun1.ruf.uni-freiburg.de (Klaus Hartnegg) (11/04/90)

ej@kos.rci.dk (Erik W. Jeppesen) writes:

>It seems to be a well-known feature of DOS 3.3 that at
>19200 baud you will loose characters when you are using
>the keyboard.

Hu? I never heared this and never experienced it either.
I'm using 19200 baud on a relative slow AT (8 MHz) all the
time and had never any problems. You have to use a terminal program
that causes the serial interface to generate interrupts whenever
a character arrives and installes his own interrupt handler for these.
I believe that you then can even run 19200 baud on an XT when you make
screen output fast enough (direct screen writes).

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