diff --git a/CHANGES b/CHANGES
index f305a791..e7b1780a 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,6 +1,10 @@
 lm_sensors CHANGES file
 -----------------------
 
+SVN HEAD
+  Program isadump: Detect when address bit 7 is a busy flag
+
+
 2.10.3 (20070319)
   Library: Do not skip i2c adapters with only a class device and no
             physical device. This change is required to survive the
diff --git a/prog/dump/isadump.c b/prog/dump/isadump.c
index 1ed7dcc5..5031e783 100644
--- a/prog/dump/isadump.c
+++ b/prog/dump/isadump.c
@@ -293,6 +293,10 @@ int main(int argc, char *argv[])
 				res = inb(addrreg + i + j);
 			} else {	
 				outb(i+j, addrreg);
+				if (i+j == 0 && (inb(addrreg) & 0x80)) {
+					/* Bit 7 appears to be a busy flag */
+					range = 128;
+				}
 				res = inb(datareg);
 			}
 			printf("%02x ", res);