Quick question -- what's the fastest anyone's managed to transfer data=20
from a PIC18F85J50 to or from a PC, using USB?

After a heck of a lot of protocol tweaks and the addition of=20
double-buffering (which netted me another 20 kbytes/sec), I'm up to a=20
shade under 220 kbytes/sec. Is this about right for a chip with the PLL=20
on and a core clock of 48MHz?

The data is being sourced from the Parallel Master Port -- data either=20
goes from USB to PMP, or the other way.

The source code is online at http://hg.discferret.com/firmware/ for the=20
curious. This includes a patch to the Microchip USB Stack which adds a=20
'special' string descriptor that reads the device serial number from the=20
end of the bootloader block of the Flash.

Thanks,
--=20
Phil.
piclist@philpem.me.uk
http://www.philpem.me.uk/
--=20
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