diff --git a/drivers/scsi/cpqfcTStrigger.c b/drivers/scsi/cpqfcTStrigger.c
new file mode 100644
index 0000000..dbb7e65
--- /dev/null
+++ b/drivers/scsi/cpqfcTStrigger.c
@@ -0,0 +1,33 @@
+// Routine to trigger Finisar GTA analyzer. Runs of GPIO2
+// NOTE: DEBUG ONLY! Could interfere with FCMNGR/Miniport operation
+// since it writes directly to the Tachyon board.  This function
+// developed for Compaq HBA Tachyon TS v1.2 (Rev X5 PCB)
+
+#include "cpqfcTStrigger.h"
+#if TRIGGERABLE_HBA
+
+#include <linux/kernel.h>
+#include <linux/ioport.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <asm/io.h>
+
+void TriggerHBA( void* IOBaseUpper, int Print)
+{
+  __u32 long value;
+
+  // get initial value in hopes of not modifying any other GPIO line
+  IOBaseUpper += 0x188;  // TachTL/TS Control reg
+  
+  value = readl( IOBaseUpper);
+  // set HIGH to trigger external analyzer (tested on Dolche Finisar 1Gb GTA)
+  // The Finisar anaylzer triggers on low-to-high TTL transition
+  value |= 0x01; // set bit 0
+
+  writel( value, IOBaseUpper);
+
+  if( Print)
+    printk( " -GPIO0 set- ");
+}
+
+#endif