termio.7 (2010 09)

t
termio(7) termio(7)
C = One hexadecimal digit (4 bits) for FIFO control. Values for each bit are as follows:
Receive FIFO Trigger Level Transmit Limit
c3 c2 Level c1 c0 Limit
001001
014014
108108
1 1 14 1 1 12
H = One hexadecimal digit (4 bits) which controls diagnostic access and hardware flow con-
trol.
Bit Value
h3 Diagnostic telephony access
h2 Reserved
h1 Reserved
h0 Enables RTS/CTS hardware flow control
M = One hexadecimal digit (4 bits) to determine the port access type. Values for each bit are
as follows:
Bit Value
m3 TI/ALP
m2 0 = Simple protocol (U.S.),
1 = CCITT protocol (Europe)
m1m0 00=Direct
01 = Dial-out modem
10 = Dial-in modem
11=Invalid
Servers
Timed output delays are not directly supported. If used, an appropriate number of fill characters (based
on the current baud rate) is output. The total time to output the fill characters is at least as long as the
time requested.
The system specified input flow control values are as follows: low water mark is 60, high water mark is
180, and maximum allowed input is 512.
The HP 98196A (formerly 27140A option 800) interface does not support the following hardware settings:
CBAUD B200, B38400, EXTA, EXTB.
The HP A1703-60003 and the HP 28639-60001 interfaces do not support baud rates above 9600. Further-
more, changing the following hardware settings on port 0 from the default (9600 baud, 8 bit characters, 1
stop bit, no parity) is not supported:
CBAUD, CSIZE, CSTOPB, PARENB, PARODD.
The HP J2094A interface does not support baud rates above 19200.
The HP J2094A supports RTS and CTS flow control. The RTS/CTS hardware handshaking can be
enabled through a bit in the device file minor number, through an
ioctl() call (see termiox (7)), or
through the stty command (see stty (1)).
Device File Minor Number
Server device file minor numbers take the form:
0xIIPPHM
where:
II = Two hexadecimal digits (8 bits) to indicate the instance of the serial interface.
PP = Two hexadecimal digits (8 bits) to indicate the port number of this device on the serial
interface.
20 Hewlett-Packard Company − 20 − HP-UX 11i Version 3: September 2010