diff --git a/doc/chips/vt1211 b/doc/chips/vt1211
index c7040af2..fbd1be3e 100644
--- a/doc/chips/vt1211
+++ b/doc/chips/vt1211
@@ -28,17 +28,18 @@ contains voltage/temperature monitoring and
 PWM control circuitry for two fans.
 
 We define the sensors as follows. Somewhat convoluted to minimize
-changes from via686a.
+changes from via686a. Temp1 and in6 are unimplemented in the vt1211
+chip but are included in the driver.
 
 	Sensor		Voltage Mode	Temp Mode	uch_config bit
 	--------	------------	---------	--------------	
 	Reading 1			temp3
 	Reading 3			temp1
-	UCH1/Reading2	in0		temp2		0x04
-	UCH2		in1		temp4		0x08
-	UCH3		in2		temp5		0x10
-	UCH4		in3		temp6		0x20
-	UCH5		in4		temp7		0x40
+	UCH1/Reading2	in0		temp2		0x04 (4)
+	UCH2		in1		temp4		0x08 (8)
+	UCH3		in2		temp5		0x10 (16)
+	UCH4		in3		temp6		0x20 (32)
+	UCH5		in4		temp7		0x40 (64)
 	3.3V		in5
 	-12V		in6