2 replies to this topic

[Robin]

Hi everybody!

I have 3 question, 2 of which is about simulation in modelsim, the last one is about shared memory.
1: I have noticed that Codeveloper doesn't generate the testbench, have we write it myself handly?
If it does, any templates?
2: I am now using Altera's FPGA, and my project using float point, but the files with float library are encrypted by Altera
How to solve these problems if using third-part tools, like: modelsim, synplify?
3: In ImpulseC's document it said: The shared memory is accessed through the use of DMA.
but using function co_memory_ptr in hw files, is it still in the DMA way?
I notice that if use function co_memory_readblock and co_memory_writeblock, it will cost a lot of on-chip memory.

Regards,
Robin

[RalphBodenner]

Hi Robin,

1: I have noticed that Codeveloper doesn't generate the testbench, have we write it myself handly?
If it does, any templates?

As of version 3.50, CoDeveloper can generate a ModelSim testbench, using the new CoValidator tool. These testbenches will currently only work with streams, though support for co_memory will be coming soon.

2: I am now using Altera's FPGA, and my project using float point, but the files with float library are encrypted by Altera
How to solve these problems if using third-part tools, like: modelsim, synplify?

I believe the Altera edition of ModelSim (called ModelSim AE) includes behavioral HDL for the floating-point cores that can be simulated. This edition is available from Altera.

3: In ImpulseC's document it said: The shared memory is accessed through the use of DMA.
but using function co_memory_ptr in hw files, is it still in the DMA way?
I notice that if use function co_memory_readblock and co_memory_writeblock, it will cost a lot of on-chip memory.

The co_memory_ptr function lets you do word-size transactions, which will most likely not be as efficient as block transfers. Block transfers, done with co_memory_*block, are generally more efficient, but as you recognize, they require an on-chip block RAM buffer.

Regards,
Ralph

[Carlos]

How can i get the CoValidator tool??

I requested a 30-day software of that tool, but i have no answer yet