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Altera_Forum's avatar
Altera_Forum
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20 years ago

HALT instruction for NIOSII?

Can the NIOS core be put in a HALT state after initialisation of the system? Basically, I use a DMA controller to transfer data from SDRAM to a small internal dual-port RAM and I want to keep the eff...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

> I want to keep the efficiency of the SDRAM high

If your goal is to keep the instruction master off of the SDRAM while performing

DMA, you can achieve this with an instruction cache or a small on chip ram:

Disable interrupts and jump to a polling loop in the on chip ram. How you break the

loop is up to you, but you could certainly poll the DMA status register.

Regards,

--Scott