When I test my udma33 interface , I write the first sectors with LBA address mode,but the datas I read from the same address are diffrent from which I write in.
- posted
17 years ago
the problem when I design the udma33 interface
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- posted
17 years ago
bjzhangwn schrieb:
I would test things in this order:
PIO identify device ... useful data? PIO write ... PIO read ... same data? PIO write ... UDMA read ... same data? UDMA write ... PIO read ... same data? UDMA write ... UDMA read ... same data?
looks like you started with the most complicated combination ...
bye, Michael
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17 years ago
Thanks,But the design don't have a cpu,the test must be all in FPGA,so the tests are difficult,if I do this ,then the state machine will be very complicate,The only way I can do are to test it under the UDMA mode!