Has someone posted some batari BASIC code to achieve this? Be nifty to have something people could copy and paste to be more AFP compatible.
I don't think so, but I would think it would be something like this:
for temp5 = 0 to 127 : w000[temp5] = $FF : next
This would need to go before the playfield definition, since this would overwrite the playfield.
Having said that, I personally haven't gotten any bankswitched games made with batari BASIC to work on the AFP, with or without SuperChip RAM, not even a simple "hello world" example, and I haven't been able to determine why.