date and time created 90/04/24 12:59:22 by william

SCCS-vsn: sys/i386/isa/icu.h 5.1

diff --git a/usr/src/sys/i386/isa/icu.h b/usr/src/sys/i386/isa/icu.h
new file mode 100644 (file)
index 0000000..8b92e49
--- /dev/null
+++ b/usr/src/sys/i386/isa/icu.h
@@ -0,0 +1,44 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * %sccs.include.386.c%
+ *
+ *     @(#)icu.h       5.1 (Berkeley) %G%
+ */
+
+/*
+ * AT/386 Interrupt Control constants
+ * W. Jolitz 8/89
+ */
+
+#ifndef        LOCORE
+extern unsigned short  imen;   /* interrupt mask enable */
+extern unsigned short  cpl;    /* current priority level */
+
+#define        INTREN(s)       imen &= ~(s)
+#define        INTRDIS(s)      imen |= (s)
+#endif
+
+/* Interrupt enable bits */
+#define        IRQ0    0x0001          /* highest priority - timer */
+#define        IRQ1    0x0002
+#define        IRQ8    0x0100
+#define        IRQ9    0x0200
+#define        IRQ2    IRQ9
+#define        IRQ10   0x0400
+#define        IRQ11   0x0800
+#define        IRQ12   0x1000
+#define        IRQ13   0x2000
+#define        IRQ14   0x4000
+#define        IRQ15   0x8000
+#define        IRQ3    0x0008
+#define        IRQ4    0x0010
+#define        IRQ5    0x0020
+#define        IRQ6    0x0040
+#define        IRQ7    0x0080          /* lowest - parallel printer */
+
+