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試試 Net 指令
" M1 h4 n% y* n! wLayer operation6 x, A9 |: }, u1 @5 x
NET layer name [… name]
; F7 |- Q& l. z7 c4 CParameters
9 p N% E4 Y. \0 p• layer! h) y$ H0 S: U; V1 i
A required original layer or layer set, or a derived polygon layer.& p: e! s* k, ?/ ~' [# B8 d, S1 w
• name4 Q h; H! p/ W+ B
A required name of a net, which can contain one or more question mark (?) characters. The
9 ^( `3 `" M2 P: @? is a wildcard character that matches zero or more characters. You can specify name any
* {! J5 w8 o- w+ b. v" cnumber of times in one statement. The name can be a string variable (see Variable).0 p" `! R- X& c7 s6 {2 D0 a
Description$ S. h8 r) m$ L1 L; i0 j
Selects all layer polygons that belong to the net having the specified name. To avoid ambiguity,
}, ]# P8 j0 {& f kyou must use the parameters in layer name order.6 d/ h$ i3 O+ q2 L1 a
Note# H# n$ h) x0 {* u
Do not use this operation to obtain net shorting information. The Net operation uses net3 b2 ^" m# e/ C" f3 D6 _8 Y
names assigned by the connectivity extractor. If the connectivity extractor encounters8 l6 Y* _: _; _
shorted nets, it assumes it has found a single net, and assigns it one name.6 ^3 ?! ?8 v7 J; Y; F# R O; n
The connectivity on layer must be established through a connectivity operation.
, Z0 i7 q, r( x& u7 e! ESee also Not Net, Net Area, Connect, Sconnect, and Stamp.
4 `, Z- q& y, P IExamples
' s Q; z+ I: \+ e# C% w- o% oMETAL_SP {
5 m# [0 r! ^# w" G# e@ VDD metal must be spaced at 4.5 microns& M" x$ `; l0 |- W
@ VCC metal must be spaced at 4 microns
* u' x8 ?- t* E x8 Ovdd_metal = metal net vdd1 a7 m3 t% @* [% M- I
vcc_metal = metal net vcc2 @0 C' j8 Y0 T0 d& o# P) z
external vdd_metal < 4.5- q) @! M! W0 `$ s4 e8 P' \ |4 U
external vcc_metal < 4.0 |
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