diff --git a/sys/alpha/alpha/timerreg.h b/sys/alpha/alpha/timerreg.h
index 21eba904db6..9f0b1aff522 100644
--- a/sys/alpha/alpha/timerreg.h
+++ b/sys/alpha/alpha/timerreg.h
@@ -55,7 +55,7 @@
  * in undefined behavior (but hopefully not fry the chip).
  * Reading in this manner has no side effects.
  *
- * [IBM-PC]
+ * [ALPHA]
  * The outputs of the three timers are connected as follows:
  *
  *	 timer 0 -> irq 0
@@ -64,31 +64,15 @@
  *
  * Timer 0 is used to call hardclock.
  * Timer 2 is used to generate console beeps.
- *
- * [PC-9801]
- * The outputs of the three timers are connected as follows:
- *
- *	 timer 0 -> irq 0
- *	 timer 1 -> speaker (via keyboard controller)
- * 	 timer 2 -> RS232C
- *
- * Timer 0 is used to call hardclock.
- * Timer 1 is used to generate console beeps.
  */
 
 /*
  * Macros for specifying values to be written into a mode register.
  */
 #define	TIMER_CNTR0	(IO_TIMER1 + 0)	/* timer 0 counter port */
-#ifdef PC98
-#define	TIMER_CNTR1	0x3fdb		/* timer 1 counter port */
-#define	TIMER_CNTR2	(IO_TIMER1 + 4)	/* timer 2 counter port */
-#define	TIMER_MODE	(IO_TIMER1 + 6)	/* timer mode port */
-#else
 #define	TIMER_CNTR1	(IO_TIMER1 + 1)	/* timer 1 counter port */
 #define	TIMER_CNTR2	(IO_TIMER1 + 2)	/* timer 2 counter port */
 #define	TIMER_MODE	(IO_TIMER1 + 3)	/* timer mode port */
-#endif
 #define		TIMER_SEL0	0x00	/* select counter 0 */
 #define		TIMER_SEL1	0x40	/* select counter 1 */
 #define		TIMER_SEL2	0x80	/* select counter 2 */