NAME    [Toc]    [Back]

     sab - Infineon SAB82532 (ESCC2) serial communications driver

SYNOPSIS    [Toc]    [Back]

     sab* at ebus?
     sabtty* at sab?

DESCRIPTION    [Toc]    [Back]

     The  sab  is  a Infineon (formerly Siemens) SAB82532 (ESCC2)
serial interface
 chip used in  PCI-based  UltraSPARC  Sun  workstations.
The ESCC2 provides
  two  independent  input/output channels per instance.
These chips
     are normally used to provide RS-423 and RS232  serial  ports
for general
     purpose use.

     The  sab  driver  supports  all of the standard tty(4) ioctl
calls.  The status
 of the DTR, RTS, CTS, and DCD  signals  can  be  queried
with TIOCMGET
     command,  but,  due to limitations in the hardware, only the
DTR and RTS
     signals can be modified with TIOCMSET, TIOCMBIC, and  TIOCMBIS ioctl(2)
     commands.

FILES    [Toc]    [Back]

     /dev/ttyh[0-1]  Serial ports

SEE ALSO    [Toc]    [Back]

     ioctl(2), ebus(4), intro(4), tty(4)

HISTORY    [Toc]    [Back]

     The sab driver first appeared in OpenBSD 3.1.

BUGS    [Toc]    [Back]

     The sab does not support cua minor devices.

OpenBSD      3.6                         October     29,     2001