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author | sheldonh <sheldonh@FreeBSD.org> | 2000-03-01 14:50:24 +0000 |
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committer | sheldonh <sheldonh@FreeBSD.org> | 2000-03-01 14:50:24 +0000 |
commit | b45b9e3cde3c8b803fc2c4fbdb784fc378ced24d (patch) | |
tree | 0b7d3487005ae5a1da0062d675a3bf21249410eb /share/man/man4/si.4 | |
parent | 46cac19efdca36bb719c540488e5b984e7370eca (diff) | |
download | FreeBSD-src-b45b9e3cde3c8b803fc2c4fbdb784fc378ced24d.zip FreeBSD-src-b45b9e3cde3c8b803fc2c4fbdb784fc378ced24d.tar.gz |
Remove single-space hard sentence breaks. These degrade the quality
of the typeset output, tend to make diffs harder to read and provide
bad examples for new-comers to mdoc.
Diffstat (limited to 'share/man/man4/si.4')
-rw-r--r-- | share/man/man4/si.4 | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/share/man/man4/si.4 b/share/man/man4/si.4 index 74cd088..428f5e1 100644 --- a/share/man/man4/si.4 +++ b/share/man/man4/si.4 @@ -24,14 +24,17 @@ port version. The "XIO" and "SX" modules come only in 8 port versions. .Pp The host adapter polls and transfers data between the modules and the rest -of the machine. The Host adapter provides a 256 byte transmit and 256 byte +of the machine. +The Host adapter provides a 256 byte transmit and 256 byte receive FIFO for each of the 32 ports that it can maintain. .Pp The XIO modules can operate each of their 8 ports at 115,200 baud. -The SI version can run at 57,600 baud. The SX modules can operate each of their +The SI version can run at 57,600 baud. +The SX modules can operate each of their 8 ports at up to 921,600 baud. .Pp -SX modules are only supported when connected to an SX host card. SI or +SX modules are only supported when connected to an SX host card. +SI or XIO modules are supported on any host card. .Pp The host adapter uses a shared memory block in the traditional ISA bus @@ -39,7 +42,8 @@ The host adapter uses a shared memory block in the traditional ISA bus range, but requires the memory range to be explicitly non-cached. The driver does not yet support this mode of operation. .Pp -SX ISA Host cards have an 8/16 bit mode switch or jumper on them. This switch +SX ISA Host cards have an 8/16 bit mode switch or jumper on them. +This switch or jumper MUST be set for 8 bit mode. .Pp The ISA adapters can use Irq's 11, 12 or 15 (and 9 and 10 in the case of @@ -55,7 +59,8 @@ The si device driver also responds to the utility for configuring drain-on-close timeouts. .Pp The driver also defines 3 sysctl variables that can be manipulated: -machdep.si_debug sets the debug level for the whole driver. It depends +machdep.si_debug sets the debug level for the whole driver. +It depends on the driver being compiled with SI_DEBUG. machdep.si_pollrate sets how often per second the driver polls for lost interrupts. machdep.si_realpoll sets whether or not the card will treat the @@ -75,7 +80,8 @@ Due to the lack of available interrupts, only 3 ISA SI/XIO host cards can be used at once. .Pp The lowest 5 bits of the minor device number are used to select the port -number on the module cluster. The next 2 bits select which of 4 host adapter +number on the module cluster. +The next 2 bits select which of 4 host adapter cards. This allows a maximum of 128 ports on this driver. .Pp Bit 7 is used to differentiate a tty/dialin port (bit 7=0) and a |