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請問我利用DE1光碟的DE1_SD_Card_Audio範例9 e$ P( Y0 V, _" e
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並利用NIOS II IDE執行MemoryTest' o/ f/ F) V9 [ _3 R; A
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可以成功執行SDRAM測試
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/ N! Q# S+ `% u但我用Quartus 7.0 的SOPC Builder重新Build後; A; M; E% j. X8 t+ j) a& \9 ~
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再Quartus II Compiler重作同樣實驗* d+ ~/ _2 j8 Y( T6 y9 l4 o
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卻會出現下列錯誤:: h( Z V$ T3 s2 f# i
; N! l; b9 n) N' w8 w! S$ BUsing cable "USB-Blaster [USB-0]", device 1, instance 0x00
& p9 x! V, x9 E7 ]8 fPausing target processor: not responding.
p# l' N* ^, n$ vResetting and trying again: OK
5 ~6 u- o( n- m7 `9 s# cInitializing CPU cache (if present)
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* Y# U3 {, L4 c5 I/ G* w r5 Z1 nDownloading 00800020 ( 0%)! A) v3 ^& F$ ^1 `
Downloading 00810000 (67%)
# k. ^5 L+ g+ E" t+ k4 x( c- xDownloaded 95KB in 1.1s (86.3KB/s)* e6 R! y/ I1 x3 G/ c# o5 _* q: l# k
4 c, k1 @; T6 l1 A- ~ d5 cVerifying 00800020 ( 0%)
5 r5 @6 f- N9 l* |0 B8 |* Q! f9 x& ?Verify failed between address 0x800020 and 0x80FFFF
3 R5 J) c, X" L3 _2 V: sLeaving target processor paused
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; R y4 y& r& T( W7 T' `( {很多文章說明PLL設-3 ns,也有專家說要改成-11ns~-18ns
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我試過還是不行' y. P: q' }2 H9 M9 U
: A. C2 g; T$ c( x5 Y; ^6 N9 v$ I可否請問是軟體問題? |
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