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



NAME
     hps - Low level driver for Systech Serial Communications
          Controller

SYNOPSIS
     VECTOR: module=hps intr=rhpintr vector=0x40 ipl=2 unit=0

DESCRIPTION
     Each Systech serial controller provides 16 serial ports and
     one Centronics parallel printer port for VME bus based
     machines. Current software supports up to four controllers
     on a single machine.

     Each line attached to the Systech controller 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.

     Several different controller configurations may be supported
     in the future and thus the driver is split into two drivers.
     The upper level (hty) supports asynchronous ttys, while the
     lower level hps is independent of the protocol being used.

     The lower level is not normally accessed from the user level
     except by the tcs_load program which downloads the con-
     troller with its executable image, see tcs_load(1).

FILES
     /dev/rhp[0-3]
     /etc/tcs_load
     /etc/tcs6236.dnl

SEE ALSO
     hty(7)
     tty(7)




















                        Printed 11/19/92                   Page 1