From 2a43d9939d10dec4ffb7e22a2cc5f665ccbf9f99 Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Sat, 10 Oct 1992 00:00:00 +0000
Subject: [PATCH] Plan 9 from Bell Labs 1992-10-10

---
 gnot/screen.h | 2 ++
 pc/screen.h   | 2 ++
 port/devbit.c | 2 ++
 ss/screen.h   | 2 ++
 4 files changed, 8 insertions(+)

diff --git a/gnot/screen.h b/gnot/screen.h
index de51fd5b8b1ad916ffd7684fb90b38b52bf9fea4..a3dd699a525856e050fc5a74688ba926b93df537 100644
--- a/gnot/screen.h
+++ b/gnot/screen.h
@@ -27,3 +27,5 @@ extern Mouseinfo	mouse;
 extern Cursorinfo	cursor;
 
 extern void		mouseupdate(int);
+
+#define	hwscreenwrite(a, b)
diff --git a/pc/screen.h b/pc/screen.h
index de51fd5b8b1ad916ffd7684fb90b38b52bf9fea4..a3dd699a525856e050fc5a74688ba926b93df537 100644
--- a/pc/screen.h
+++ b/pc/screen.h
@@ -27,3 +27,5 @@ extern Mouseinfo	mouse;
 extern Cursorinfo	cursor;
 
 extern void		mouseupdate(int);
+
+#define	hwscreenwrite(a, b)
diff --git a/port/devbit.c b/port/devbit.c
index db23e3bba4004233c2627ebf15bbee470bced8f9..0a5d7f3de637467926496c6636d9336afa9ffbc6 100644
--- a/port/devbit.c
+++ b/port/devbit.c
@@ -1414,6 +1414,8 @@ bitwrite(Chan *c, void *va, long n, ulong offset)
 				p += l;
 				m -= l;
 			}
+			if(v == 0)
+				hwscreenwrite(miny, maxy);
 			break;
 
 		case 'x':
diff --git a/ss/screen.h b/ss/screen.h
index de51fd5b8b1ad916ffd7684fb90b38b52bf9fea4..a3dd699a525856e050fc5a74688ba926b93df537 100644
--- a/ss/screen.h
+++ b/ss/screen.h
@@ -27,3 +27,5 @@ extern Mouseinfo	mouse;
 extern Cursorinfo	cursor;
 
 extern void		mouseupdate(int);
+
+#define	hwscreenwrite(a, b)