NAME
sab, sabtty
— Infineon SAB82532 (ESCC2)
serial communications driver
SYNOPSIS
sab* at ebus?
sabtty* at sab?
DESCRIPTION
The sab is an 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
- /dev/ttyh[0-1]
- Serial ports
SEE ALSO
HISTORY
The sab driver first appeared in
OpenBSD 3.1.
BUGS
The sab does not support cua minor
devices.