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Altera_Forum's avatar
Altera_Forum
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20 years ago

Reset only the CPU

I have a system with a custom peripheral, a CPU and a dual ported memory which is connected to the PC via PCI interface. The CPU runns from the software stored in the dualported RAM. Now I want...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

Hi Klaus and Fischer,

I've struggled with many of the same issues ... and all related to PCI. In my case however, the

PCI bridge (configured as an adapter) implemented bus mastering. Needless to say, I had many

of those "locked up" moments -- mostly because there isn't an independent "CPU reset" vs. a

System Module reset 8-P

Anyway, the watchdog approach was reliable ... a bit slow ... but reliable. If you have an instruction

cache and you place that busy loop in a single line, you can spin without any bus activity.

Regards,

--Scott