WB 1.3 fails when inserting new floppy

[HolySamosa]

Hi guys.

Amiga 2000, WB 1.3, no hard disk yet.

Intermittently yet consistently, Workbench starts to misbehave after changing the current floppy in DF0.   The floppy icon for the newly inserted disk doesn't appear.  All disk icons will stop responding and while I can move windows, the contents of the window disappear.   Mouse and keyboard continue to work.  Can type commands in a Shell window, but a "dir" command will freeze.  

Tried swapping CIA chip positions, but no dice.

Suggestions would be most welcome.  Thanks!

[HolySamosa]

Hi Mike!

I forgot to mention that I did clean the heads and also tried a floppy drive from another system.

Wondered about the RAM myself.  I haven't tried it yet without the RAM expansion board but I will do and report back.

I'm still short on bootable disks, but I did get Amiga Explorer up and running and have made one demo floppy which does boot but locks up on disk access about half-way though.  The disk had a bad CRC when I made it, so it's not a good test.

Cheers,
Jeremy

[HolySamosa]

Mike, you nailed it-- the RAM expansion card seems to be the source of the trouble.  Pulled it and so far no more problems-- well, no more of THAT problem anyway. Next up, SCSI...