🚀 go-pugleaf

> CLOSE to RISC.  The RISC-like features are: hardwired for speed, lots
> of piplining and many 1 cycle operations.  Although the 68000 can work
> on 16 bits at a time it takes 4 cycles to do it. The '816 can load or
> store 16 bits in 2 cycles.  Not to put down the 68000 however because
> it is a clearly superior chip.  Comparisons to the 8088 are more apt
> (and more fun!), the 65816 is a clear winner here, but there is all
> of that 8088 software out there.....

Rick, I agree with the 8088 comparison.  But you've got more bus above
that!  The 68000 loads 16 bits in 1 (one!) MEMORY cycle, the '816 and the
8088 each load 16 bits in 2 (two) MEMORY cycles.  The '816 uses a straight
processor clock, the 8088 and 68000 essentially divide their input clock
by 4 for their memory cycles.  Its the memory cycle that counts, that's
where the cost of memory is figured in, and its a much better meter of
performance than the clock speed (which is why your 2.8MHz '816 will 
probably kill an 8088 at 4.77 MHz in most operations).  The advantage of 
the 4 cycle input clock is that fewer internal operations are left to
chance, since they have definate clock edges from which to be referenced.
It makes for a much less asynchronous design.

-- 
============================================================================
Dave Haynie	{caip,ihnp4,allegra,seismo}!cbmvax!daveh
		"Techno-Hippie, heathen, designing evil computers"

	These opinions are my own, though if you try them out, and decide
	that you really like them, a small donation would be appreciated.