J1 -- very small & simple CPU for an FPGA

Werner Almesberger werner at openmoko.org
Thu Dec 2 09:03:02 EST 2010


S?bastien Bourdeauducq wrote:
> As it turned out, that piece of crap takes more than 256 clock cycles
> per byte for a rather simple buffer copy code...

Wow. Are they doing the equivalent of

	while (*dst != *src)
		(*dst)++;

?

> By the way, why is it always poor or stupid designs that make hackaday
> and all the buzz? I've read countless times about this J1, Plasma, another
> crappy AVR clone and ZPU.

Maybe they've found an efficient honey to vinegar ratio for their
PR efforts ? :-)

- Werner




More information about the discussion mailing list


interactive