On Tue, Nov 29, 2016 at 12:11 PM, Brent Hilpert <hilp...@cs.ubc.ca> wrote:
> is the 8X300 the 'unusual', proto-DSP device discussed in a chapter of > the Osborne book? > I don't know whether Osborne described it that way, but since the 8X300 and 8X305 don't have a multiplier, only support 8-bit addition, and can only address 512 bytes of data address space, they wouldn't make very good DSP processors. However, since all instructions execute in 250 ns, they'd be able to perform some DSP operations faster than contemporary 8-bit microprocessors, which usually took at least 2 us for the simplest instructions, and even longer for fancier instructions.
