modem problems

Paul Chamberlain tif at doorstop.austin.ibm.com
Tue Jul 17 05:25:16 AEST 1990


In article <23885 at adm.BRL.MIL> TSARS at uga.cc.uga.edu ( mark porporino) writes:
>I see the message "Serial: ERROR: Garbage or loose cable on
>/dev/tty1A, port shut down" on my console when a call comes in to my external
>2400bps ZOOM modem.

I seem to recall something like this:

The driver received an interrupt but there was no character received.  I
believe that the reason for this is that some UARTS can/will generate an
interrupt on RI (Ring Indicator).  SCO considers this a no-no.  I'm not
real sure but it seems like one solution was to disconnect RI from the UART.

Paul Chamberlain | I do NOT represent IBM         tif at doorstop, sc30661 at ausvm6
512/838-7008     | ...!cs.utexas.edu!ibmaus!auschs!doorstop.austin.ibm.com!tif



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