Initial revision

1999-12-09 23:15:14 +00:00
commit 2635c3085d
139 changed files with 24298 additions and 0 deletions
@@ -0,0 +1,51 @@
+/*-----------------------------------------------------------------------------
+ * port.h (by damianf@wpi.edu)
+ * Low level I/O functions taken from led-stat.txt
+ * 
+ * Jan 22 95
+ *
+ * DOS part (tested only with DOS version of GCC, DJGPP)
+ * by M.Prinke <m.prinke@trashcan.mcnet.de> 3/97
+ */
+
+/* #define DOS */
+
+#ifndef PORT_H
+#define PORT_H
+#endif
+
+#ifndef DOS
+static inline int port_in( int port )
+{
+   unsigned char value;
+  __asm__ volatile ("inb %1,%0"
+                    : "=a" (value)
+                    : "d" ((unsigned short)port));
+   return value;
+}
+
+static inline void port_out( unsigned short int port, unsigned char val )
+{
+  __asm__ volatile (
+                    "outb %0,%1\n"
+                    :
+                    : "a" (val), "d" (port)
+                    );
+}
+#else
+#include <pc.h>
+
+static inline int port_in( int port )
+{
+   unsigned char value;
+   value = inportb((unsigned short) port);
+   return (int)value;
+}
+
+static inline void port_out( unsigned int port, unsigned char val )
+{
+   outportb((unsigned short) port, val);
+}
+#endif
+
+/**** END OF FILE ****/