Hi,
I have an A500. If I bought a toolbox(which adds 2 Zorro II slots, allowing use of A2000 cards) would I be able to use the Picasso with my 500, and would it be 100% compatible?
No you wouldn't. First off, you would need to hack a videoslot in that toolbox thing, without it the Picasso IV looses much of it's value. Apart from that, you would only be using it in Zorro II mode. You would be far better off with a Picasso II. Combined with an Indivision ECS you would have a great setup.
Technically the Picasso IV might work, you just wouldn't be doing it justice by not utilizing it 100%.
You would ofcourse still need an accelerator, and no, you can't swap a 68000 with a 68020, it requires a turbocard. Expect to fork out more cash...