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Altera_Forum
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14 years ago

SOPC builder - connect a custom component to tightly coupled i/f?

Hi, is there any way to get SOPC to accept a custom component instead of the "on-chip RAM" as the tightly coupled instruction memory interface? I've tried everything I can think of but SOPC bui...
Altera_Forum's avatar
Altera_Forum
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14 years ago

Thanks. Up to now I have been running with RO and RW data sections located in DTCM, with alt_load() copying disabled.

However for resilience in-service I need to be able to guarantee that the Nios SW can be re-booted without re-programming the FPGA. So I'm going to use the ITCM like a boot device, copying the RO and RW data sections to DTCM in the alt_load() phase, and protecting it from corruption.

But (I think) I also need to connect the ITCM to the Nios data master in order to allow debugging via JTAG.

The idea then is to protect ITCM from inadvertent writes unless debugging is specifically enabled via an externally programmed register.

I'll try creating the conduit component.