CP(7)               RISC/os Reference Manual                CP(7)



NAME
     cp - Integrated Solutions Communications Processor

SYNOPSIS
     device cp0 at vme? csr 0xfff520 am 0x3d vector cpintr

DESCRIPTION
     An ISI Communications Processor provides 8 or 16 communica-
     tion lines; and it can also provide printer support for
     either centronix or data products type printer devices.

     Each line attached to the ISI communications processor
     behaves as described in tty(7).  Input and output for each
     line may independently be set to run at any of a number of
     speeds; see tty(7) for the encoding.

CAVEATS
     This board only supports DCD and DTR modem signals.  Also it
     may be DTE or DCE depending on the RS-232 adapter that is
     connected to it.  Adapters from ISI will normally turn the
     board into a DCE device, while adapters manufactured by MIPS
     will normally turn it into a  DTE device.

FILES
     /dev/tty[h-i][0-9a-f]

SEE ALSO
     tty(7)
     VME-ICP16/8 Intelligent Communications Processor Hardware
     Reference Manual

DIAGNOSTICS
     "cp%d: line %d overflow."
                         The on-board uart or silo overflowed
                         before it could be serviced.

     "cpintr:  unexpected interrupt (0x%x)"
                         The driver received an interrupt from
                         unknown origin.

     "cptimer: dropped tx_intr on unit cp%d line %d"
                         The driver sent a character out a port
                         but never received a transmit interrupt.

     "cp%d:  silo input from unknown line %d"
                         The board is passing input from a non
                         existent port.








                        Printed 11/19/92                   Page 1