From 58c5de22e1a7b7238391044688cc2ed9148cc55d Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Sat, 10 Sep 1994 00:00:00 +0000
Subject: [PATCH] Plan 9 from Bell Labs 1994-09-10

---
 carrera/kbd.c    | 16 ++++++++++++++++
 carrera/screen.h |  1 -
 pc/devvga.c      | 10 +++++++++-
 3 files changed, 25 insertions(+), 2 deletions(-)

diff --git a/carrera/kbd.c b/carrera/kbd.c
index 074b923bde57a9ca33798f1a4947c01df8b6f9f6..b45363eec81b83ac30bd5b3c2e48678dc2409ffd 100644
--- a/carrera/kbd.c
+++ b/carrera/kbd.c
@@ -391,3 +391,19 @@ kbdinit(void)
 
 	return 1;
 }
+
+void
+mousectl(char *cmd)
+{
+	int s;
+
+	if(strncmp(cmd, "reset", 5) == 0){
+		s = splhi();
+		mousecmd(0xF6);
+		mousecmd(0xEA);	/* streaming */
+		mousecmd(0xE8);	/* set resolution */
+		mousecmd(3);
+		mousecmd(0xF4);	/* enabled */
+		splx(s);
+	}
+}
diff --git a/carrera/screen.h b/carrera/screen.h
index 55ad7d78d0dbf09eff69ba312c1577f320326290..566d43d1a733f04478c65108527728d56377620d 100644
--- a/carrera/screen.h
+++ b/carrera/screen.h
@@ -11,6 +11,5 @@ extern Cursorinfo	cursor;
 extern void	mouseupdate(int);
 extern int	cursoron(int);
 #define		cursoroff(x)
-#define		mousectl(s)
 extern Point	mousexy(void);
 void			setcursor(Cursor*);
diff --git a/pc/devvga.c b/pc/devvga.c
index d62a88ca8e417175e4ac229191c7122cfe43ab3c..d5d1b1a65447680239bfed25e750c4f29e840e39 100644
--- a/pc/devvga.c
+++ b/pc/devvga.c
@@ -1108,7 +1108,15 @@ tridentpage(int page)
 static void
 et4000page(int page)
 {
-	outb(0x3cd, (page<<4)|page);
+	uchar p;
+
+	p = page & 0x0F;
+	p |= p<<4;
+	outb(0x3CD, p);
+
+	p = (page & 0x30);
+	p |= p>>4;
+	outb(0x3CB, p);
 }
 static void
 cirruspage(int page)