/ q# _$ U N6 O8 V& v9 h! s, _( r有一个项目文件，已经画好，出过网表，画好PCB。现在要交给其他人稍微修改一下，发现同样的文件（没有修改过），orCAD在DRC的时候出现了DRC0039的错误。 7 t) ? J* C- F具体情况是：项目采用层次原理图设计的方法，所有的错误都出现在顶层原理图上，是总线有关的错误。 : C1 |) N" n S) E$ t7 ] a具体错误信息： / a! v' b6 w9 @% m Y1 r4 mChecking Schematic: 00_SYSTEM+ k) m- j4 x; p, l
-------------------------------------------------- 6 j V; w" d' f& t7 }Checking Electrical Rules @( b: W: i+ Z 0 ^) @% O2 L. A6 I, RChecking for Unconnected Nets4 H% y `1 F2 \: h7 T# G
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Checking Off-Page Connections 8 V% K7 o5 n/ k/ r( Q7 z: Y) R5 a% y% k" _2 `; {6 ?: V f
Checking Pin to Port Connections ' Y p. H: `. M8 B |8 s7 M6 ?
Checking for Invalid References / j h- H' Z* U$ g. `3 T! G" i; `; x& q
Checking for Duplicate References% z2 {' }& f6 \" s( G1 t% W% n
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Reporting Off-Grid Objects 6 }& y" t) Z' l% c- ]7 l * L% c' F5 _! nChecking Visible Unconnected Power Pins - x9 p) @9 d/ w8 q# O4 G" O- X2 {4 e0 ]- q) t U
Checking Misleading Tap connection ' V# z1 g6 Y+ yERROR: [DRC0039] Tap may not be connected with the bus Check Entire net. CPU_XM1_ADDR15% p) J0 j/ F0 v
00_SYSTEM, 2_BLOCK (276.86, 25.40) 7 s* q0 r# L6 a% P
ERROR: [DRC0039] Tap may not be connected with the bus Check Entire net. CPU_XM1_ADDR14 1 O6 t& J2 H2 {' A$ N* x+ @ 00_SYSTEM, 2_BLOCK (276.86, 25.40) 4 o: X1 i5 R- h: F; EERROR: [DRC0039] Tap may not be connected with the bus Check Entire net. CPU_XM1_ADDR13# h8 Z+ {/ |6 k
00_SYSTEM, 2_BLOCK (276.86, 25.40) 1 V# V- C+ J# U1 ^ERROR: [DRC0039] Tap may not be connected with the bus Check Entire net. CPU_XM1_ADDR129 ?8 E+ h$ A( J9 X1 ?8 {# [( q
00_SYSTEM, 2_BLOCK (276.86, 25.40) + e0 I4 N6 k! W- s8 |/ D。。。 ! u7 r( H* R$ p. O& ^0 J============================================================================================ + W3 j0 w/ ^9 ^% {官方文档的解释：- [, d. V. `+ Z
[DRC0039] Tap may not be connected with the bus Check Entire net. ; O$ J, D& y9 S9 H9 PDesign Rule Check detected a net physically connected to a bus with a different base name than the net itself. To solve this problem, make sure that the Tap is property connected to the bus. 1 x2 _: I# o2 K* K) M G
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