@Tim Edwards in layout following are the layout options for resistor however in schematic test circuit " res_high_pol" (for PTAT) and "res_x_high_pol"(showing CTAT behaviour) are given. My question is how we can spot above mentioned resistors of schematic in layout.

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In magic,

res_high_po

is

ppolyres

while

res_xhigh_po

is

xpolyres

From the

sky130A.tech

file

active ppolyres,ppres,xhrpoly
  active xpolyres,xpres,xres,uhrpoly
...
 device rsubcircuit sky130_fd_pr__res_high_po       xhrpoly \
        xpc nwell,pwell,space/w error l=l+0.16 w=w
...
sky130_fd_pr__res_xhigh_po       uhrpoly \
        xpc nwell,pwell,space/w error l=l+0.16 w=w

In klayout,

res_high_poly

has

rpm

86/20

and

res_xhigh_poly

has layer

79/20

which may not be named in klayout but is called

URPM

in the magic tech file.

here we have three versions of polyres in magic , then which of them is ppoly and xpoly

48.2 Ohm/sq is npoly 319.8 Ohm/sq is ppoly 2000 Ohm/sq is xpoly

thanks a lot!

Be sure to check the layer after drawing.

ok we would check it