Speed comparison?

Hi! Is there any estimate on how many times faster a 80166 (20MHz) would be compared to an 8051 (12MHz)? I am just looking for a general estimate, not specifically looking at this or that function...
Cycle Comparison
Cycle Comparison
Speed comparison?

Hi! Is there any estimate on how many times faster a 80166 (20MHz) would be compared to an 8051 (12MHz)? I am just looking for a general estimate, not specifically looking at this or that function...
Why does the assembly code sometimes store the register values into RAM and sometimes not?

I have two pieces of code that are very similar. Both of the code are compiled with the `-O0` flag in AC5. When I look at the assembly of the first code, I found that some variables loaded into registers...