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Altera_Forum
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10 years ago

why nios occupy much more M9K blocks than its on-chip memory size?

hi, everyone. i use max10 08SAE, it has 387.072 bits , 44 M9K i build a nios system, with 20480 bytes on chip memory (20480*8=163840 bits), after compile the project, the report shows the pro...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

Hi,

The On-Chip Ram uses 32M9Ks as Row 46 shows, and as you could see eg in line 39, a 8x64 Fifo-instantiation needs 512 Bits out of one M9K. The rest of the M9K is no longer useable by other functionality, so one more M9K is unavailable.

I hope this helps.