date and time created 91/05/09 21:40:34 by william

SCCS-vsn: sys/i386/isa/ic/ns16550.h 7.1

diff --git a/usr/src/sys/i386/isa/ic/ns16550.h b/usr/src/sys/i386/isa/ic/ns16550.h
new file mode 100644 (file)
index 0000000..e68e497
--- /dev/null
+++ b/usr/src/sys/i386/isa/ic/ns16550.h
@@ -0,0 +1,24 @@
+/*-
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * %sccs.include.redist.c%
+ *
+ *     @(#)ns16550.h   7.1 (Berkeley) %G%
+ */
+
+/*
+ * NS16550 UART registers
+ */
+
+#define        com_data        0       /* data register (R/W) */
+#define        com_dlbl        0       /* divisor latch low (W) */
+#define        com_dlbh        1       /* divisor latch high (W) */
+#define        com_ier         1       /* interrupt enable (W) */
+#define        com_iir         2       /* interrupt identification (R) */
+#define        com_fifo        2       /* FIFO control (W) */
+#define        com_lctl        3       /* line control register (R/W) */
+#define        com_cfcr        3       /* line control register (R/W) */
+#define        com_mcr         4       /* modem control register (R/W) */
+#define        com_lsr         5       /* line status register (R/W) */
+#define        com_msr         6       /* modem status register (R/W) */