1 files changed, 15 insertions, 2 deletions

diff --git a/sys/dev/ic/ns16550.h b/sys/dev/ic/ns16550.h
index ff59757a5f73..dae85bcaf583 100644
--- a/sys/dev/ic/ns16550.h
+++ b/sys/dev/ic/ns16550.h
@@ -31,13 +31,25 @@
  * SUCH DAMAGE.
  *
  *	from: @(#)ns16550.h	7.1 (Berkeley) 5/9/91
- *	$Id$
+ *	$Id: ns16550.h,v 1.2 1993/10/16 13:48:52 rgrimes Exp $
  */
 
 /*
  * NS16550 UART registers
  */
-
+#ifdef PC98
+#define	com_data	0x000	/* data register (R/W) */
+#define	com_dlbl	0x000	/* divisor latch low (W) */
+#define	com_dlbh	0x100	/* divisor latch high (W) */
+#define	com_ier		0x100	/* interrupt enable (W) */
+#define	com_iir		0x200	/* interrupt identification (R) */
+#define	com_fifo	0x200	/* FIFO control (W) */
+#define	com_lctl	0x300	/* line control register (R/W) */
+#define	com_cfcr	0x300	/* line control register (R/W) */
+#define	com_mcr		0x400	/* modem control register (R/W) */
+#define	com_lsr		0x500	/* line status register (R/W) */
+#define	com_msr		0x600	/* modem status register (R/W) */
+#else /* IBM-PC */
 #define	com_data	0	/* data register (R/W) */
 #define	com_dlbl	0	/* divisor latch low (W) */
 #define	com_dlbh	1	/* divisor latch high (W) */
@@ -49,3 +61,4 @@
 #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) */
+#endif /* PC98 */