diff --git a/sys/i386/boot/biosboot/README.serial b/sys/i386/boot/biosboot/README.serial
index f00d7d0f2d11..732e4787e35c 100644
--- a/sys/i386/boot/biosboot/README.serial
+++ b/sys/i386/boot/biosboot/README.serial
@@ -105,7 +105,7 @@ To boot FreeBSD in serial console mode, you must do the following:
 	higher priority console). This replaces the COMCONSOLE option.
 
   Example:
-  device sio0 at isa? port "IO_COM1" tty flags 0x10 irq 4 vector siointr
+  device sio0 at isa? port "IO_COM1" tty flags 0x10 irq 4
 
   If the flags were not set, you need to run UserConfig (on a different
   console) or recompile the kernel.
@@ -185,7 +185,7 @@ CAVEATS:
 	  `flags' for the serial port you want to use. For example, if you
 	  want to make COM2 the console:
 
-	  device sio1 at isa? port "IO_COM2" tty flags 0x10 irq 3 vector siointr
+	  device sio1 at isa? port "IO_COM2" tty flags 0x10 irq 3
 
 	  The console flags for the other serial ports should not be set.
 	o Recompile both the boot blocks and the kernel.
@@ -193,4 +193,4 @@ CAVEATS:
 	  from the new kernel.
 
 
-$Id: README.serial,v 1.8 1997/06/09 05:10:54 bde Exp $
+$Id: README.serial,v 1.9 1997/06/16 06:32:51 charnier Exp $
diff --git a/sys/pc98/boot/biosboot/README.serial b/sys/pc98/boot/biosboot/README.serial
index 5adbfa941233..bf47e6c4a470 100644
--- a/sys/pc98/boot/biosboot/README.serial
+++ b/sys/pc98/boot/biosboot/README.serial
@@ -105,7 +105,7 @@ To boot FreeBSD in serial console mode, you must do the following:
 	higher priority console). This replaces the COMCONSOLE option.
 
   Example:
-  device sio0 at isa? port "IO_COM1" tty flags 0x10 irq 4 vector siointr
+  device sio0 at isa? port "IO_COM1" tty flags 0x10 irq 4
 
   If the flags were not set, you need to run UserConfig (on a different
   console) or recompile the kernel.
@@ -185,7 +185,7 @@ CAVEATS:
 	  `flags' for the serial port you want to use. For example, if you
 	  want to make COM2 the console:
 
-	  device sio1 at isa? port "IO_COM2" tty flags 0x10 irq 3 vector siointr
+	  device sio1 at isa? port "IO_COM2" tty flags 0x10 irq 3
 
 	  The console flags for the other serial ports should not be set.
 	o Recompile both the boot blocks and the kernel.
@@ -193,4 +193,4 @@ CAVEATS:
 	  from the new kernel.
 
 
-$Id: README.serial,v 1.4 1997/06/09 13:44:03 kato Exp $
+$Id: README.serial,v 1.5 1998/04/07 15:33:47 kato Exp $