Download Coherent Device Driver Kit

com2 - com3
67
For details on how these versions differ, see the entry for com.
Files
l devl comll - Interrupt-driven, non-modem (local) line
l devl comlr - Interrupt-driven, modem (non-local) line
I dev I comlpl - Polled, non-modem (local) line
l devl comlpr - Polled, modem (non-local) line
See Also
com, com3, stty
com2
Device Driver
Device driver for asynchronous serial line COM2
-
l devl com2 is the COHERENT system's standard interface to asynchronous serial line COM2 .
The interface is assigned major device 6 , and is accessed as a character-special device. The I IO
address for the corresponding 8250 SIO is Ox2F8 (COM2). com2 generates interrupt IRQ3.
Four versions of device com2 are in directory ldev, as follows:
Device Name
ldevl com21
ldevl com2r
I dev I com2pl
ldevlcom2pr
Major
6
6
6
6
Minor
128
0
1 92
64
110 Type
Interrupts
Interrupts
Polled
Polled
Modem
Control?
No
Yes
No
Yes
For details on how these differ, see the entry for com.
Files
l devl com21 - Interrupt-driven, non-modem (local) line
l devl com2r - Interrupt-driven, modem (non-local) line
l devl com2pl - Polled, non-modem (local) line
l devl com2pr - Polled, modem (non-local) line
See Also
com, com4, stty
com3
Device Driver
Device driver for asynchronous serial line COM3
-
I dev I com3 is the COHERENT system's standard interface to asynchronous serial line COM3.
The interface is assigned major device 5, and is accessed as a character-special device. The 1/0
address for the corresponding 82 50 SIO is Ox3E8 (COM3). com3 generates interrupt IRQ4.
Four versions of device com3 are in directory ldev, as follows:
Device Name
l devl com31
l devl com3r
ldevl com3pl
ldevl com3pr
Major
5
5
5
5
Minor
129
1
1 93
65
l/0 Type
Interrupts
Interrupts
Polled
Polled
Modem
Control?
No
Yes
No
Yes
For details on how these differ, see the entry for com.
LEXICON