强度值(Strengths)
有强度的网络可以使模块更加精确。

语法

( strength0 [, strength1 ] ) | ( strength1 [, strength0 ] ) | cap_strength 
strength0 = highz0 | pull0 | strong0 | supply0 | weak0
strength1 = highz1 | pull1 | strong1 | supply1 | weak1
cap_strength = large | medium | small

强度表如下:
Strength level

Strength level Name Keyword
7 Supply drive supply0 , supply1
6 Strong drive strong0 , strong1
5 Pull drive pull0 , pull1
4 Large capacitive large
3 Weak drive weak0 , weak1
2 Medium capacitive medium
1 Small capacitive small
0 High impedance highz0 , highz1

例程

and (strong1, weak0) u1 (Q, A, B);
trireg (small) C1;
assign (weak1, strong0) Q = A + B;