NAME

cp − Intelligent Communications Processor

SYNOPSIS

CP0 at 0x7ff520 vector 0x56 (vector is programmable)

DESCRIPTION

Cp is the driver for the Integrated Solutions Intelligent Communications Processor (ICP), available in two versions: an eight line controller (ICP8) and a sixteen line controller (ICP16). 

Each line attached to the controller behaves as described in tty(4). Input and output for each line may independently be set to run at any of 16 speeds; see tty(4) for the encoding. Modem control is  supported on each line.

FILES

/dev/tty[hi][0-9a-f]
/dev/ttyd[0-9a-f]dial-up lines

SEE ALSO

tty(4)

DIAGNOSTICS

cp%d: NXM.  No response from the bus on a dma transfer within a timeout period.  This occurs most frequently when the bus is heavily loaded and when devices which hog the bus are present.  It is not serious. 

cp%d: silo overflow.  The character input silo overflowed before it could be serviced.  This can happen if a hard error occurs when the CPU is running with elevated priority, as the system will then print a message on the console with interrupts disabled. 

4(I) BSD  —  1 August 1985