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Altera_Forum's avatar
Altera_Forum
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20 years ago

Timestamp timer problem

Hi , I am having some problems in using the timestamp timer. Basically , when i am measuring the time to perform a single instruction, i occasionally(but not always) get a negative answer.I hav...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

you have to turn on bit31 of the address to uncache the io port access.

or use IORW macro.