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Some changes from Julian Stacey installed

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This commit is contained in:
Andrey A. Chernov 1994-03-18 13:40:01 +00:00
parent 8951219578
commit e8c3de7e2f
2 changed files with 88 additions and 28 deletions
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58
share/man/man4/man4.i386/sio.4
View File

@ -34,7 +34,7 @@
.\"
.\" from: @(#)dca.4 5.2 (Berkeley) 3/27/91
.\" from: com.4,v 1.1 1993/08/06 11:19:07 cgd Exp
.\" $Id: sio.4,v 1.7 1994/02/19 13:19:33 ache Exp $
.\" $Id: sio.4,v 1.8 1994/02/19 15:50:38 ache Exp $
.\"
.Dd February 9, 1994
.Dt SIO 4 i386
@ -80,28 +80,42 @@ Input and output for each line may set to one of following baud rates;
19200, 38400, 57600, or 115200. Your hardware may limit your baud
rate choices.
.Pp
For multiport cards the
The driver supports `multiport' cards.
Multiport cards are those that have one or more groups of ports
that share a common IRQ and Interrupt Request register set per group.
Frequently 4 ports share 1 IRQ, some 8 port cards have 2 groups of 4 ports,
thus using 2 IRQs.
Some cards allow the first 2 serial ports to have seperate IRQs per port
(as per DOS PC standard).
.sp
The
.Nm flags
keyword in the kernel configuration file determines which port of
your multiport card is the master device, and whether the
port is part of a multiport card. The master device is the port which
has register through which all interrupts of the card are funneled.
All ports of a multiport card report pending interrupts using this
keyword specifies for each
.Nm device sio
line in the kernel configuration file,
whether the port is part of an IRQ sharing group, & if so,
which port is the master device for
the group (ie which port has the IRQ control registers).
The master device is the port which
has registers through which all interrupts of the port group are funneled.
All ports of a port group report pending interrupts using this
single register.
.sp
The master device is indicated
.Nm bitwise
, so all sio entries in the kernel config file that are part of a
The master device is an integer embedded in the high byte of the
.Nm flags
bitfield, so all sio entries in the kernel config file that are part of a
multiport card must include the correct
.Nm flags
specification. The bitwise assignment allows multiple multiport cards to
specification.
The bitwise assignment allows multiple port groups to
be configured in one system. It does
.Nm not
imply that the hardware can share the same physical interrupt line!
imply that more than one port group (or card) can share
the same physical interrupt line!
.Pp
In the synopsis the
.Nm flags 0x401
means that the 4th port (sio4) is the master
means that the 5th port (sio4) is the master
device (so the MSB of the flags), and that the ports are part of a
multiport card (the LSB of the flags, actually only the LS
.Nm bit
@ -110,7 +124,10 @@ F.e. if you have only two standard ports in addition to multiport
card, this
.Nm flags
will be
.Nm 0x201 .
.Nm 0x201
(assuming the control port is
.Nm sio2
).
.Pp
Which port is the master device depends on the card type. Consult
the hardware documentation of your card.
@ -125,6 +142,19 @@ ports. The minor number of the dialout
port is 128 higher than that of the corresponding dialin port. Use
.Xr stty 1
to enable or disable modem control as required by your setup.
.Pp
While testing new cards & resolving card config DIP header &
.Nm sio flags
settings, to avoid coms. failure from lack of full modem DC level
settings on ports,
you are recommended to temporarily use syntax such as:
.Nm stty -f /dev/tty03 clocal
or open
.Nm /dev/cua03
if you have bidirectional mode active
to force serial port to open without
.Nm O_NONBLOCK
flag.
.Sh FILES
.Bl -tag -width /dev/tty0? -compact
.It Pa /dev/tty0?

58
share/man/man4/sio.4
View File

@ -34,7 +34,7 @@
.\"
.\" from: @(#)dca.4 5.2 (Berkeley) 3/27/91
.\" from: com.4,v 1.1 1993/08/06 11:19:07 cgd Exp
.\" $Id: sio.4,v 1.7 1994/02/19 13:19:33 ache Exp $
.\" $Id: sio.4,v 1.8 1994/02/19 15:50:38 ache Exp $
.\"
.Dd February 9, 1994
.Dt SIO 4 i386
@ -80,28 +80,42 @@ Input and output for each line may set to one of following baud rates;
19200, 38400, 57600, or 115200. Your hardware may limit your baud
rate choices.
.Pp
For multiport cards the
The driver supports `multiport' cards.
Multiport cards are those that have one or more groups of ports
that share a common IRQ and Interrupt Request register set per group.
Frequently 4 ports share 1 IRQ, some 8 port cards have 2 groups of 4 ports,
thus using 2 IRQs.
Some cards allow the first 2 serial ports to have seperate IRQs per port
(as per DOS PC standard).
.sp
The
.Nm flags
keyword in the kernel configuration file determines which port of
your multiport card is the master device, and whether the
port is part of a multiport card. The master device is the port which
has register through which all interrupts of the card are funneled.
All ports of a multiport card report pending interrupts using this
keyword specifies for each
.Nm device sio
line in the kernel configuration file,
whether the port is part of an IRQ sharing group, & if so,
which port is the master device for
the group (ie which port has the IRQ control registers).
The master device is the port which
has registers through which all interrupts of the port group are funneled.
All ports of a port group report pending interrupts using this
single register.
.sp
The master device is indicated
.Nm bitwise
, so all sio entries in the kernel config file that are part of a
The master device is an integer embedded in the high byte of the
.Nm flags
bitfield, so all sio entries in the kernel config file that are part of a
multiport card must include the correct
.Nm flags
specification. The bitwise assignment allows multiple multiport cards to
specification.
The bitwise assignment allows multiple port groups to
be configured in one system. It does
.Nm not
imply that the hardware can share the same physical interrupt line!
imply that more than one port group (or card) can share
the same physical interrupt line!
.Pp
In the synopsis the
.Nm flags 0x401
means that the 4th port (sio4) is the master
means that the 5th port (sio4) is the master
device (so the MSB of the flags), and that the ports are part of a
multiport card (the LSB of the flags, actually only the LS
.Nm bit
@ -110,7 +124,10 @@ F.e. if you have only two standard ports in addition to multiport
card, this
.Nm flags
will be
.Nm 0x201 .
.Nm 0x201
(assuming the control port is
.Nm sio2
).
.Pp
Which port is the master device depends on the card type. Consult
the hardware documentation of your card.
@ -125,6 +142,19 @@ ports. The minor number of the dialout
port is 128 higher than that of the corresponding dialin port. Use
.Xr stty 1
to enable or disable modem control as required by your setup.
.Pp
While testing new cards & resolving card config DIP header &
.Nm sio flags
settings, to avoid coms. failure from lack of full modem DC level
settings on ports,
you are recommended to temporarily use syntax such as:
.Nm stty -f /dev/tty03 clocal
or open
.Nm /dev/cua03
if you have bidirectional mode active
to force serial port to open without
.Nm O_NONBLOCK
flag.
.Sh FILES
.Bl -tag -width /dev/tty0? -compact
.It Pa /dev/tty0?