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3.26. How to install the IEEE1394 OHCI Compliant Host Controller

This change applies to Windows 7 and Windows 7 x64 platforms running Hamamatsu firewire (Dcam) cameras.

Please refer to points 19 and 20 raised in the March 2011 Dcam compatibility notes which can be found here.

Open the device manger: 

Windows menu > Right click on my computer > properties > device manager

• Show all IEEE1394 Bus Host Controllers (click on the drop down arrow adjacent to the IEEE1394 Bus Host Controllers heading - see Fig 1.)
• If you have multiple Firewire cards/controllers isolate the one which connects to the Hamamatsu camera.
• Right click on 1394 OHCI Compliant Host Controller > Update driver software
• Click on 'Browse my computer for driver software'
• Select the 'Let me pick from a list of device drivers on my computer'
• select the 1394 OHCI Compliant Host Controller (Legacy) option - see Fig 2.
• Click 'Next' to install the driver
• If the installation is successful you will receive notification that ''Windows has successfully updated your driver software''
• Check in the Device manager window to ensure that the Legacy version of the OHCI Compliant Host Controller has been installed - see Fig 3.
• Switch off the camera, shutdown the workstation.
• Turn the workstation on first, then the camera.

Fig. 1

Fig 2

Fig 3