On 02/03/2011 06:18 PM, Michael J. Mahon wrote:
FWIW, the CFFA, running on my 8MHz Zipped //e, delivers 44.4KB/sec data bandwidth for BLOADs through BASIC.SYSTEM, so there's something to be said for a bus connection. (BTW, transfer rate did not seem to be strongly affected by acceleration, even with slot speed set to "fast".)
IIRC, the ZipChip does not accelerate code running in expansion ROM. That was the motivation behind my hack to the RamFast EPROM that copies a little loop into the stack page to do block I/O. It was originally suggested by Drew Vogan (RamFast designer) and seemed to make quite a significant improvement over polled I/O.
Steve