Fix a bunch of man pages to stop abusing the .Nm macro, along

with some other minor fixes for some problems I noticed
while making these changes.

Pointed out by:	bde

1 files changed, 16 insertions, 16 deletions

diff --git a/share/man/man4/sio.4 b/share/man/man4/sio.4
index b9001d3bd3b4..c2770a865aa9 100644
--- a/share/man/man4/sio.4
+++ b/share/man/man4/sio.4
@@ -126,13 +126,13 @@ To work, the control and status registers for a group, if any,
 must be mapped to the scratch register (register 7)
 of a port in the group.
 Such a port is called a
-.Nm master
+.Em master
 port.
 .Pp
 The
-.Nm flags
+.Em flags
 keyword may be used on each
-.Nm device sio
+.Em device sio
 line in the kernel configuration file
 to silence the probe
 or to disable the FIFO on 16550A UARTs
@@ -142,32 +142,32 @@ since the driver automatically adjusts the receiver
 FIFO trigger level for low latency and high efficiency.
 .Pp
 The
-.Nm flags
+.Em flags
 keyword
-.Nm must
+.Em must
 be used for all ports that are part of an IRQ sharing group.
 One bit specifies IRQ sharing; another bit specifies whether the port does
-.Nm not
+.Em not
 require AST/4 compatible initialization.
 The minor number of the device corresponding a master port
 for the group is encoded as a bitfield in the high byte.
 The same master port must be specified for all ports in a group.
 .Pp
 The
-.Nm irq
+.Em irq
 and
-.Nm vector
+.Em vector
 specifications must be given for master ports
 and for ports that are not part of an IRQ sharing group,
 and not for other ports.
 .Pp
 In the synopsis,
-.Nm flags 0x701
+.Em flags 0x701
 means that the 8th port (sio7) is the master
 port, and that the port is on a multiport card with shared IRQs
 and an AST/4 compatible IRQ control register.
 .Pp
-.Nm flags 0xb05
+.Em flags 0xb05
 means that the 12th port (sio11) is the master
 port, and that the port is on a multiport card with shared IRQs
 and no special IRQ control register.
@@ -218,7 +218,7 @@ initial termios states suitable for your setup.
 The lock termios state acts as flags to disable changing
 the termios state.  E.g., to lock a flag variable such as
 CRTSCTS, use
-.Nm stty crtscts
+.Em stty crtscts
 on the lock-state device.  Speeds and special characters
 may be locked by setting the corresponding value in the lock-state
 device to any nonzero value.
@@ -290,8 +290,8 @@ and some has been lost.
 The
 .Nm
 driver is derived from the
-.Nm HP9000/300
-.Nm dca
+.Tn HP9000/300
+.Xr dca 4
 driver and is
 .Ud
 .Sh BUGS
@@ -305,13 +305,13 @@ implementations of the chip with non-functional FIFO hardware.
 .Pp
 The constants which define the locations
 of the various serial ports are holdovers from
-.Nm DOS .
+.Tn DOS .
 As shown, hex addresses can be and for clarity probably should be used instead.
 .Pp
 Note that on the AST/4 the card's dipswitches should
-.Nm not
+.Em not
 be set to use interrupt sharing. AST/4-like interrupt sharing is only used when
-.Nm multiple
+.Em multiple
 AST/4 cards are installed in the same system.  The sio driver does not
 support more than 1 AST/4 on one IRQ.
 .Pp