incomplete faxes

Gert Doering (gert@greenie.muc.de)
Mon, 14 Sep 1998 11:58:32 +0200


Hi,

On Mon, Sep 14, 1998 at 10:27:23AM +0200, Jan Kasprzak wrote:
> : It *is* possible, but I'd rather consider a bad phone line or so.  Even if
> : highly I/O bound, the system should be able to keep up with a 19200 bps
> : fax transmission (that's only 2 Kbyte/second!).
> 
> 	This depends on the machine UART as well as on the other hardware
> in that box. I used to have problems with 486/66 and 16450 UART during
> the SCSI transfer (I had AHA1542 host adapter). It seems that AHA1542
> during the bus-master transfer locks the bus for such time that 16450 
> overruns.

Overruns can't happen for *outgoing* transfers. Underruns should not
do much harm, unless they occur for a very long period and the buffers
in the modem itself underrun.

gert

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Gert Doering - Munich, Germany                             gert@greenie.muc.de
fax: +49-89-35655025                        gert.doering@physik.tu-muenchen.de