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Altera_Forum's avatar
Altera_Forum
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16 years ago

Stratix II and M4K true dual port memory

Hello, I'm using DSP Builder to create 256 true DPRAM (Dual Port Rams) with size 64x10bits. Compilation process places each of them in a single M4K block and I'm very quick out of memory. Is th...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Yep, TDM is out. There's no reason you can't use M512s. You need to determine if DSP builder is explicitly saying to use M4Ks(I imagine it is if you're getting no-fits, as Quartus should balance resources pretty good.) If that's the case, you need to figure out how to tell it to use M512s, or ideally, just use generic memories and let Quartus figure it out.