Antenna Rule疑惑求助

Rucas

最近在做一个项目，Fab提供的Antenna Rule中有如下语句，看了半天不明白，有了解的帮忙解读一下，谢谢！！
M1_DIO = NET AREA RATIO SD M1 > 0
M1_MIN_DIO = NET AREA M1_DIO > 0.203  // minimum effective diode 0.203

ANT.c.a1 { @ (M1 perim*thickness / gate area) > 400 (without effective diode)
                 @ (M1 perim*thickness / gate area) > Ratio (with effective diode)
  NET AREA RATIO M1 M1_MIN_DIO GATE > 0     // no effective diode
      [
       !!AREA(M1) * !!AREA(GATE) *
       (
       !AREA(M1_MIN_DIO)*
                ( PERIMETER(M1)*0.43/AREA(GATE) - 400 ) +
       !!AREA(M1_MIN_DIO)*
                ( PERIMETER(M1)*0.43/AREA(GATE) - AREA(M1_MIN_DIO)*400 - 2200 )
        )
      ] RDB ANT.c.a1.rep M1 M1_MIN_DIO GATE
}


前面都好理解，但是从！！开始就不是很理解了，！！符号是啥意思啊？

Rucas

怎么没人回啊

cxl666

回复 2# Rucas


    ! :returns a 1 (true) if its argument is 0;
        returns 0 (false) otherwise.
example:
!AREA(poly)
   :   returns a 1 if there is no poly in the data capture window.
       returns 0 if there is poly present in the capture window.