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請問我利用DE1光碟的DE1_SD_Card_Audio範例
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可以成功執行SDRAM測試1 ^* i6 b& e' r7 n
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但我用Quartus 7.0 的SOPC Builder重新Build後6 Z9 }% F) i/ Z; S
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再Quartus II Compiler重作同樣實驗
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6 Q' M, ]2 i, R+ f+ a- b卻會出現下列錯誤:- W2 L4 e) r9 _/ Z
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Using cable "USB-Blaster [USB-0]", device 1, instance 0x00
" [$ x/ r- I# m2 V( Y+ z, PPausing target processor: not responding.% P+ G7 o0 ]6 Q; p" X% O
Resetting and trying again: OK
, c4 o/ M- e1 v# A9 r; _! JInitializing CPU cache (if present)- A! d0 L& h% G0 f3 }( c8 L. N
OK, S @$ A/ a. q7 N( v
! ]1 e2 x Z- m5 rDownloading 00800020 ( 0%)
. N9 s) B& t7 ]1 @Downloading 00810000 (67%)
& V3 i& B5 f* D; FDownloaded 95KB in 1.1s (86.3KB/s)
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& P( j) a) A! O# a: pVerifying 00800020 ( 0%)
" L8 K& u: F$ K! \' cVerify failed between address 0x800020 and 0x80FFFF& }9 S; Z( g0 f1 q! K0 [
Leaving target processor paused$ Q, U( f# r6 u+ D& t
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0 ^' Y4 d1 s+ P/ t9 z很多文章說明PLL設-3 ns,也有專家說要改成-11ns~-18ns% Z8 N3 V& Z/ _4 c
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我試過還是不行6 h4 E* X9 d8 E( g$ k E
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可否請問是軟體問題? |
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