What do you make of this, (Hardware Issue?)

[Oldsmobile_Mike]

#See all the other threads on this forum about random things happening caused by bad floppy drives and disks.  

[Oldsmobile_Mike]

It's a 030/40 combo max 16 Mb. Add a PIV, remove 4Mb mem. simple.

I know some of the lower-end GVP boards did wacky things with memory, especially some of the early ones.  But this still shouldn't be necessary if the board can map its memory fully into the 32-bit address space.

[Oldsmobile_Mike]

That's all really interesting, your saying my perfect Amiga A1200 from
1994 has some errors in it, impossible.  I guess I need to check my
board, don't remember what model it is.  But I believe I only have two
16mg modules in there. What's PIV?

LOL.  Thread has gotten a bit OT from your original question about your 1200.  PIV is a graphics board:  http://amiga.resource.cx/exp/picasso4

Possible for you to pick up a new floppy drive from AmigaKit for around $22?  And while you're swapping that in carefully inspect the condition of all your caps.  That's what I'd start with if I were you.  Good luck!