While doing automatic placement of my block having macros (mainly memories), its rotating the macros in different directions which i don't want. Is it possible to set that macros should be rotated by 180 degrees only while doing automatic placement??
you could play around with the "SYMMETRY" statment in the macro lef file. Use only "X' or "Y". Goto page 93 of lefdefref.pdf for explaination on this variable.