1 files changed, 81 insertions, 0 deletions
diff --git a/libgloss/m68k/leds.c b/libgloss/m68k/leds.c
new file mode 100644
index 000000000..125ae8b50
--- /dev/null
+++ b/libgloss/m68k/leds.c
@@ -0,0 +1,81 @@
+/*
+ * leds.c -- control the led's on a Motorola mc68ec0x0 board.
+ *
+ * Copyright (c) 1995 Cygnus Support
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+#include "leds.h"
+
+void zylons();
+void led_putnum();
+
+/*
+ * led_putnum -- print a hex number on the LED. the value of num must be a char with
+ *              the ascii value. ie... number 0 is '0', a is 'a', ' ' (null) clears
+ *		the led display.
+ *		Setting the bit to 0 turns it on, 1 turns it off.
+ * 		the LED's are controlled by setting the right bit mask in the base
+ * 		address. 
+ *		The bits are:
+ *			[d.p | g | f | e | d | c | b | a ] is the byte.
+ *
+ *		The locations are:
+ *		
+ *			 a
+ *		       -----
+ *		    f |     | b
+ *		      |  g  |
+ *		       -----
+ *                    |     |
+ *                  e |     | c
+ *                     -----
+ *                       d                . d.p (decimal point)
+ */
+void
+led_putnum ( num )
+char num;
+{
+    static unsigned char *leds = (unsigned char *)LED_ADDR;
+    static unsigned char num_bits [18] = {
+      0xff,						/* clear all */
+      0xc0, 0xf9, 0xa4, 0xb0, 0x99, 0x92, 0x82, 0xf8, 0x80, 0x98, /* numbers 0-9 */
+      0x98, 0x20, 0x3, 0x27, 0x21, 0x4, 0xe 		/* letters a-f */
+    };
+
+    if (num >= '0' && num <= '9')
+      num = (num - '0') + 1;
+
+    if (num >= 'a' && num <= 'f')
+      num = (num - 'a') + 12;
+
+    if (num == ' ')
+      num = 0;
+
+    *leds = num_bits[num];
+}
+
+/*
+ * zylons -- draw a rotating pattern. NOTE: this function never returns.
+ */
+void
+zylons()
+{
+  unsigned char *leds 	= (unsigned char *)LED_ADDR;
+  unsigned char curled = 0xfe;
+
+  while (1)
+    {
+      *leds = curled;
+      curled = (curled >> 1) | (curled << 7);
+      delay ( 200 );
+    }
+}