RPM_GRID Coordinates VHDL Example - 2022.2 English

The following VHDL example defines RLOC constraints using RPM_GRID coordinates.

• Two shift registers are placed relative to a block RAM.
• Four stages connect the input.
• Four stages connect the output.

attribute RLOC : string; 
attribute RPM_GRID : string;
attribute RLOC of di_reg3 : label is "X25Y0"; 
attribute RLOC of di_reg2 : label is "X27Y0"; 
attribute RLOC of di_reg1: label is "X29Y0"; 
attribute RLOC of di_reg0 : label is "X31Y0"; 
attribute RLOC of ram0 : label is "X34Y0"; 
attribute RLOC of out_reg3 : label is "X37Y0"; 
attribute RLOC of out_reg2 : label is "X39Y0"; 
attribute RLOC of out_reg1 : label is "X41Y0"; 
attribute RLOC of out_reg0 : label is "X43Y0";