C2000: Instruction Cycle question

stevenh said:

Hello,

Why does the TMS320C28X CPU and Instruction Set Reference Guide give the number of cycles for when an instruction is repeated?  Why not just give the cycles for the instruction?

Stephen 

The number of cycles for a repeated instruction may not be the same as a single instruction.  Take QMACL as an example.  For a single instruction it is 2 cycles.  If it is repeated the overhead goes down to 1 cycle for each repeat (N+2).  Listing 2 cycles only would not capture this fact.