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Hi All,
I have my own custom board with a compact flash interface. Now I am testing it and have some problem I do not know. Here is my testing process. I use Quartus II 5.0 and Nios eval 5.0 with 8M bytes CompactFlash Card. First, no cf card plugged in. I test cf_power5(it is low voltage) and cf_present_n5(pull high). Then, plug cf card, now cf_power5 is also low and cf_present_n5 become low. Third, I download the software(download from forum site) and test cf_power5(become high level) and switch is given 5V output. According to above, I think the hardware connection seems OK. I run debbug as... and execute the programm step by step(cf_test.c). But, when run <div class='quotetop'>QUOTE </div> --- Quote Start --- /* Register write/readback test */[/b] --- Quote End --- , it displays <div class='quotetop'>QUOTE </div> --- Quote Start --- IDE_initialize(): error: verify fail: wrote 0x1, read 0x0 IDE_initialize(): error: verify fail: wrote 0x2, read 0x0 IDE_initialize(): error: verify fail: wrote 0x3, read 0x0 IDE_initialize(): error: verify fail: wrote 0x4, read 0x0 IDE_initialize(): error: verify fail: wrote 0x5, read 0x0 IDE_initialize(): error: verify fail: wrote 0x6, read 0x0 IDE_initialize(): error: verify fail: wrote 0x7, read 0x0 IDE_initialize(): error: verify fail: wrote 0x8, read 0x0 IDE_initialize(): error: verify fail: wrote 0x9, read 0x0 IDE_initialize(): error: failed register write/readback test. Cannot initialize IDE device.[/b] --- Quote End --- I have searched the forum and followed Jesse's paste. I tie the ATASEL_n to pull-down resistor and add delay after main() of cf_test.c file. But, still verify fail. Can help me? Thank you, LiangYiLink Copied
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Hi All,
I have solved my problem. Here I want to say that if you use cf card and appear the problem above, pls use Jesse'method in hardware and Andrew's method in software. They are both helpful. Thank you, LiangYi
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