Yup it certainly does. Rory M also sent me a diagram. I was assuming there was only one jumper which is what my board came with. Then I got it! Dug out a second jumper from an old PC - used the info - board back in the Falcon. Problem solved! Fantastic, my
Falcon shows 14 MB memory. I haven't had time to test it thoroughly yet. Without the details I probably wouldn't have worked it out. Thanks a million to you both.