bieling@terra.es wrote:
I'm not sure that an accelerator will cache the c800.cfff range
The ZipChip (II/IIe) certainly does not, since it's not smart enough to know when or whether that region has been switched out underneath it. To work around that, you can clone the transfer loop into the stack page and run it full-clip from there.
Take a look at the sources for the Ramfast host ROM that are, um, floating around for an example of how this can be done.