@all
Now its working fine. It only takes some time to boot, but perphaps its normal......
If you have 3.1 Roms, and no hard drive connected to the A1200 internal IDE header, there may be a ~30 second delay prior to booting as the miggy waits for any IDE drives to respond.
Can't remember if the BPPC menu offers any way to disable the A1200 onboard IDE, it's been a while!
Congratulations on getting it working anyway. :-)