C8(7)               RISC/os Reference Manual                C8(7)



NAME
     c8 - Digiboard Com 8 Serial board

SYNOPSIS
     ATBUS: module=c8 irq=0x7 base=0x140

DESCRIPTION
     Each line attached to the Digiboard 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.

     This board comes in two flavors, one with hardware fifos and
     one without.  Without the fifos, the maximum reliable baud
     rate is 2400.  38.4 Kbaud is supported on all 8 ports, with
     the fifos.  The board and driver support most standard RS-
     232 signals.  All ports on the board are DTE.

DIAGNOSTICS
     Cannot malloc for c8board[%d]
          Cannot initialize device driver data structures

     Nonexistent port %d
          Board has a bad port

     c8[%d] line %d: unexpected receive interrupt
     c8[%d] line %d: unexpected transmit interrupt
     c8[%d] line %d: unexpected modem interrupt
     c8[%d] line %d: OTHER interrupt
     c8: spurious interrupt
     c8[%d][%d]: Interrupt before c8init is called/done
          Received an interrupt while interrupts were not enabled

     c8_reset_poll: Could not poll at %d rate
          Could not setup proper polling rate

FILES
     /dev/ttyd[0-31]

SEE ALSO
     tty(7)














                        Printed 11/19/92                   Page 1