（求助）ModelSim SE 6.4a 进行时序仿真，SDF加载错误
时间：10-02
整理：3721RD
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我是用ModelSim SE 6.4a进行时序仿真，但在SDF加载时候，出现如下错误：
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823060): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823083): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823106): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823129): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823152): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823175): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823198): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823221): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823244): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823267): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823290): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823313): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823336): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823359): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823382): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823405): Failed to find matching specify timing constraint.
# ** Fatal: (vsim-SDF-3444) Failed to annotate from SDF file "/cimetima2/users/yu/simulation/fft_mod.sdf".
观察SDF文件后发现，是由于 （REMOVAL (posedge SD) (negedge G) (::4))这行出现问题，所有的错误都是由于这个"REMOVAL"导致，而相应的CELL为latch (我设计中使用Latch)，我想请教大家，如何解决这个问题?
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823060): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823083): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823106): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823129): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823152): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823175): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823198): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823221): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823244): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823267): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823290): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823313): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823336): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823359): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823382): Failed to find matching specify timing constraint.
# ** Error: (vsim-SDF-3262) /cimetima2/users/yu/simulation/fft_mod.sdf(823405): Failed to find matching specify timing constraint.
# ** Fatal: (vsim-SDF-3444) Failed to annotate from SDF file "/cimetima2/users/yu/simulation/fft_mod.sdf".
观察SDF文件后发现，是由于 （REMOVAL (posedge SD) (negedge G) (::4))这行出现问题，所有的错误都是由于这个"REMOVAL"导致，而相应的CELL为latch (我设计中使用Latch)，我想请教大家，如何解决这个问题?
你对SDF文件例化了吗，看一下这篇文章了，
[attach]347553[/attach]
也许对你有帮助。
兄弟这个问题我也遇到··怎么搞?
你好，你提供的文章链接看不到，能够重新发送一次吗， 谢谢。
附件没贴上来，重新贴一下呗
我也碰到该问题了，正解决这噢乖
好东西，顶一下。
这个问题是怎么解决的?
不错 看看 ，。
你好，我也遇见这个问题，想问怎么解决的?