diff --git a/rtl837x_sfr.h b/rtl837x_sfr.h
index 9a99ac7..d8a7024 100644
--- a/rtl837x_sfr.h
+++ b/rtl837x_sfr.h
@@ -97,3 +97,7 @@ __sfr __at(0xb4) SFR_NIC_DATA_H;
 __sfr16 __at(0xb6b5) SFR_NIC_RING_U16LE;
 __sfr __at(0xb5) SFR_NIC_RING_L;
 __sfr __at(0xb6) SFR_NIC_RING_H;
+
+/* Standard 8051 sfr */
+// Timer 0 value
+__sfr16 __at(0x8c8a) T0_U16;
diff --git a/rtlplayground.c b/rtlplayground.c
index 8872f0b..aaa2f43 100644
--- a/rtlplayground.c
+++ b/rtlplayground.c
@@ -119,8 +119,7 @@ __xdata uint8_t sfp_options[2];
 void isr_timer0(void) __interrupt(1)
 {
 	TR0 = 0;		// Stop timer 0
-	TH0 = SYSTICK_TIMER0_VALUE >> 8;
-	TL0 = SYSTICK_TIMER0_VALUE % 0xff;
+	T0_U16 = SYSTICK_TIMER0_VALUE;
 	TR0 = 1;		// Re-start timer 0
 
 	ticks++;
@@ -295,8 +294,7 @@ void setup_timer0(void)
 	/* The TH0 registers contain the high/low byte that we load into Timer0 when T0
 	 * overflows to 0x10000
 	 */
-	TH0 = SYSTICK_TIMER0_VALUE >> 8;
-	TL0 = SYSTICK_TIMER0_VALUE % 0xff;
+	T0_U16 = SYSTICK_TIMER0_VALUE;
 
 	CKCON &= 0xc7;
 	TCON = 0x10;	// Start timer 0