Initial source

1 files changed, 41 insertions, 0 deletions

diff --git a/i386/dos/putchar.c b/i386/dos/putchar.c
new file mode 100644
index 0000000..9b5d59b
--- /dev/null
+++ b/i386/dos/putchar.c
@@ -0,0 +1,41 @@
+/* 
+ * Copyright (c) 1995-1994 The University of Utah and
+ * the Computer Systems Laboratory at the University of Utah (CSL).
+ * All rights reserved.
+ *
+ * Permission to use, copy, modify and distribute this software is hereby
+ * granted provided that (1) source code retains these copyright, permission,
+ * and disclaimer notices, and (2) redistributions including binaries
+ * reproduce the notices in supporting documentation, and (3) all advertising
+ * materials mentioning features or use of this software display the following
+ * acknowledgement: ``This product includes software developed by the
+ * Computer Systems Laboratory at the University of Utah.''
+ *
+ * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
+ * IS" CONDITION.  THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
+ * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ *
+ * CSL requests users of this software to return to csl-dist@cs.utah.edu any
+ * improvements that they make and grant CSL redistribution rights.
+ *
+ *      Author: Bryan Ford, University of Utah CSL
+ */
+
+#include <mach/machine/eflags.h>
+
+#include "real.h"
+
+int putchar(int c)
+{
+	struct real_call_data rcd;
+
+	if (c == '\n')
+		putchar('\r');
+
+	real_call_data_init(&rcd);
+	rcd.eax = 0x0200;
+	rcd.edx = c;
+	real_int(0x21, &rcd);
+	return rcd.flags & EFL_CF ? -1 : 0;
+}
+