Coprocessor instruction differencies?

Are there differences between coprocessor instructions and instruction2:s? I mean: MCRR vs. MCRR2 MRRC vs. MRRC2 MCR vs. MCR2 MRC vs. MRC2 LDC vs. LDC2 STC vs STC2 I didn't find any differences in the...
Coprocessor instruction differencies?

Are there differences between coprocessor instructions and instruction2:s? I mean: MCRR vs. MCRR2 MRRC vs. MRRC2 MCR vs. MCR2 MRC vs. MRC2 LDC vs. LDC2 STC vs STC2 I didn't find any differences in the...
Coprocessor

Hello All! Where can I find a complete example of using C167 coprocessor, including its initialization and (espesially desired) chasing when results of calculation are ready for reading? There are...
Coprocessor

Hello All! Where can I find a complete example of using C167 coprocessor, including its initialization and (espesially desired) chasing when results of calculation are ready for reading? There are...
Compiler produces inefficient assembly code?

I and a co-worker are programming an 8051 uController in C. Last week we were struggling with a poor perfomance time of our program. So I talked to the assembly guy and we figured that our way of software...