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Altera_Forum
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15 years ago

JFS corrupt data recovery after power loss

In preparation for a Custom board I'm using the Cyclone II Eval board with the Compact Flash to record data. I need a quick boot - which I've accomplished. (5-8 seconds) The next step wa...
Altera_Forum's avatar
Altera_Forum
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15 years ago

If you want to be sure that the slow speed is due to the PIO0 interface, you could hack the driver and add some read/write access counters. Then from your application, read those counters every second. You can therefore measure the read/write transfer speeds. If you are close to the PIO0 theoretical limit, it means that it is the PIO0 interface that limits your speed, and using a higher PIO or DMA should improve it.

There is an IDE controller on Opencores that you could use but I don't know how well it is tested. We use the Evatronix controller in our projects and it works very well, in all PIO and DMA modes.

@Michael: we talked about the industrial compact flash that could recover from a power loss in this thread (http://www.alteraforum.com/forum/showthread.php?t=25702)