Compact flash perculiarities

now, I meet the same problem.

when I design the socket between up3 board and compactflash, because the compactflash works in TRUEIDE mode ,so I directly attached the atasel_n pin to GND. rfu and we_n pin to VCC,and I don't allocate pin to the reset,power pin . is it ok????????

and when I masked "

for(ucWrite = 0; ucWrite < 10; ++ucWrite)

{

IOWR_ALTERA_AVALON_CF_IDE_SECTOR_NUMBER(ide_base, ucWrite);

ucRead = IORD_ALTERA_AVALON_CF_IDE_SECTOR_NUMBER(ide_base);

if(ucWrite != ucRead)

{

iGood = 0;

printf("IDE_initialize(): error: verify fail: wrote 0x%X, read 0x%X\n",

ucWrite, ucRead);

}

}

if(iGood)

{

if(IDE_getVerbosity())

{

printf("IDE_initialize(): wrote and verified %d values successfully.\n",

ucWrite);

}

}

else

{

printf("IDE_initialize(): error: failed register write/readback test.\n");

return -1;"

the programme executes until "IOWR_ALTERA_AVALON_CF_IDE_CTL(ctl_base, ALTERA_AVALON_CF_IDE_CTL_IRQ_EN_MSK);" ,then stop.

but when i mask " alt_irq_register(ide_irq, 0, IDETrapHandler);" ,it can continuously execute.

and I don&#39;t know how to set the power_ from the cf_0 pin in sopc