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本帖最后由 abcde1234 于 2019-8-13 17:59 编辑
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求大神指点一下这些warning,非常感谢!1 g |2 }4 d4 K c8 n
! L; p0 P K8 B" ^4 D我前仿过了。后仿现在还没加sdf(理想条件下),出现x态。考虑是不是warning导致的内部逻辑不通。# U/ P- ~: }! U0 ~! l
现在把各种警告贴上来,求指点,困扰我好久了。 H: Z- q/ m6 S- {( h: ]' N
哪些警告是必须消除的。。。
2 S, O, B% |( B6 s) j) e第一种:20处左右:Warning: Undriven register 'r_reg[MEMO][DATAOUT][16]' is connected to primary output 'r_out[MEMO][DATAOUT][16]'. (ELAB-832); V3 z6 z, M4 c* t9 t
第二种:1处:Warning: ./encode.vhd:103: DEFAULT branch of CASE statement cannot be reached. (ELAB-311)
1 U# b/ E0 F; f; \% C% ]% C1 e第三种:50处:Warning: In design 'rt1553', cell 'C22054' does not drive any nets. (LINT-1)8 v' @& v( [7 O1 R
第四:800多处。。。Warning: In design 'rt1553', port 'r_out[BLOCK_CIR_ADDRESS][15]' is not connected to any nets. (LINT-28)
* l3 `+ w- l" Y( G9 ?3 i第五:70处: Warning: In design 'rt1553', output port 'memi[DATAIN][15]' is connected directly to output port 'r_out[MEMI][DATAIN][15]'. (LINT-31)7 X/ k# O/ l1 v; }) K
第六:3处:Warning: In design 'TOP1553', a pin on submodule 'memory' is connected to logic 1 or logic 0. (LINT-32)" r& j; w) v' e: R# p# d; K( X
Pin 'read_b' is connected to logic 1. & v1 q n# c0 E: \
第七:90处: Warning: In design 'TOP1553', net 'memory/data5[0]' has multiple drivers (unknown wired-logic type). (LINT-38)
5 r$ i/ R. u! ]第八:1处: Warning: Design 'TOP1553' contains 8 high-fanout nets. A fanout number of 1000 will be used for delay calculations involving these nets. (TIM-134); q6 [2 u ` {; U
第九:1处: Warning: DesignWare synthetic library dw_foundation.sldb is added to the synthetic_library in the current command. (UISN-40)+ e0 n% H; X9 `; O
第十:150处: Warning: Unable to determine wired-logic type for multiple-driver net 'memory/data1[12]'. (TRANS-5)
+ u$ i+ r$ Y$ [' F8 j6 {$ `3 [Information: Assuming multiple-driver net 'memory/data1[12]' is a wired-AND. (TRANS-6)
. s" _. j( S# i5 v& C! s) AWarning: Unable to determine wired-logic type for multiple-driver net 'memory/data1[13]'. (TRANS-5)
& O! |2 j% g& ?- A第十一:5000多处: Warning: Target library contains no replacement for register 'regs/r_sys_reg[MUX1M_10M]' (**FFGEN**). (TRANS-4)
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3 k2 a. _# l9 d另外。。。因为有个dpram模块,我使用了shared variable,是不是会导致不可综合啊?
5 b' s1 P4 e/ ~# x( m& ?% ?0 J; W; delabrate之前的error: 不知道是不是有影响
! T# s' }! b3 K3 SError: Cannot create procedure named 'group_variable' - existing command。
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