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druepy's avatar
druepy
Icon for New Contributor rankNew Contributor
3 years ago

Altera Register Chain

Hello, I'm a student at Georgia Tech. I want to do some timing analysis on flip-flop/register chains. I've read the relevant material for the two devices I have access to - a Cyclone 5 and a Stratix...
Hdl
Nurina's avatar
Nurina
Icon for Regular Contributor rankRegular Contributor
3 years ago

Hi,


I can't seem to find any setting to enable this.


From a past case it seems that using location assignment as you have previously done solves the problem.

I tried below and it seems to show the path of a register chain:

set_location_assignment MLABCELL_X1_Y55_N2 -to reg_out[0]

set_location_assignment MLABCELL_X1_Y55_N4 -to reg_out[1]

set_location_assignment MLABCELL_X1_Y55_N6 -to reg_out[2]

set_location_assignment MLABCELL_X1_Y55_N8 -to reg_out[3]

set_location_assignment FF_X1_Y55_N1 -to ff0

set_location_assignment FF_X1_Y55_N3 -to ff1

set_location_assignment FF_X1_Y55_N5 -to ff2


Regards,

Nurina


druepy's avatar
druepy
Icon for New Contributor rankNew Contributor
3 years ago

Thank you for working on this.

If chip planner shows the register chain path for you, would you be able to screenshot chip planner on your system and also send me the project?