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-rw-r--r--sys/amd64/conf/NOTES38
1 files changed, 38 insertions, 0 deletions
diff --git a/sys/amd64/conf/NOTES b/sys/amd64/conf/NOTES
index d51427c..d2d57f0 100644
--- a/sys/amd64/conf/NOTES
+++ b/sys/amd64/conf/NOTES
@@ -101,6 +101,44 @@ options CLK_USE_I8254_CALIBRATION
#####################################################################
# MISCELLANEOUS DEVICES AND OPTIONS
+#
+# sio: serial ports (see sio(4)), including support for various
+# PC Card devices, such as Modem and NICs (see etc/defaults/pccard.conf)
+#
+device sio
+hint.sio.0.at="isa"
+hint.sio.0.port="0x3F8"
+hint.sio.0.flags="0x10"
+hint.sio.0.irq="4"
+
+# `flags' specific to sio(4).
+# 0x10 enable console support for this unit. Other console flags
+# (if applicable) are ignored unless this is set. Enabling
+# console support does not make the unit the preferred console.
+# Boot with -h or set boot_serial=YES in the loader. For sio(4)
+# specifically, the 0x20 flag can also be set (see above).
+# Currently, at most one unit can have console support; the
+# first one (in config file order) with this flag set is
+# preferred. Setting this flag for sio0 gives the old behaviour.
+# 0x20 force this unit to be the console (unless there is another
+# higher priority console). This replaces the COMCONSOLE option.
+# 0x40 reserve this unit for low level console operations. Do not
+# access the device in any normal way.
+# 0x80 use this port for serial line gdb support in ddb. Also known
+# as debug port.
+# PnP `flags'
+# 0x1 disable probing of this device. Used to prevent your modem
+# from being attached as a PnP modem.
+# Other flags for sio that aren't documented in the man page.
+# 0x20000 enable hardware RTS/CTS and larger FIFOs. Only works for
+# ST16650A-compatible UARTs.
+
+# Options for sio:
+options COM_ESP # Code for Hayes ESP.
+options COM_MULTIPORT # Code for some cards with shared IRQs.
+options CONSPEED=115200 # Speed for serial console
+ # (default 9600).
+
device speaker #Play IBM BASIC-style noises out your speaker
hint.speaker.0.at="isa"
hint.speaker.0.port="0x61"
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