Honored Contributor
Honored ContributorKazu,
Yes the 32 GByte SwissBit Series 320 (UDMA/66) or 64 GByte SanDisk (UDMA7) DO USE THE SAME INTERRUPT. HERE IS WHAT I KNOW NOW after working on this more: 1. The ata driver enables interrupts during boot process to identify the device as it is going through the identification of "what is out there" process. 2. The Compact Flashes that WORK generate their first interrupt approximately 25 msec later than the 64 GByte Swiss Bit. (We have hooked a logic analyzer up to our Terasic Board with our PCB daughter card with CF) - SO SOME CRITIAL BOOT SETUP HAS NOT HAPPENED AND the OS does not indicate that this interrupt has been ENABLED -- so eventually the error -- irq 5: nobody cared (try booting with the "irqpoll" option) I have asked the firmware designer to "hold off" the first interrupt for 30 msec to see if we can at least get the system to boot. Hopefully we'll look at that today. 3. The 64 GByte SwissBit 440 Series default setting IS LBA48. I'm not sure that will be a problem IF we can get through the boot process. IF ANYONE HAS ANY INSIGHT INTO WHETHER the nios2 can handle devices with LBA48 enabled I'd apprecate it. I'm thinking this will be a problem. ANY OTHER insight is welcome - Thanks in Advance
