Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

ROM in VHDL

Hi All, I'm using DE2 FPGA to play something from a microphone pass it through DE2, do some filtering and play it back through de2. So far, I was successful on playing mic back from speakers. ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

--- Quote Start ---

If you want a ROM, then you cannot write any data to it. You cant write data into it in the code because ADC_array was declared constant, so it cannot be modified. You'll have to make it a signal (and therefore it wont be a rom anymore.)

--- Quote End ---

Thanks for the prompt response.

I don't think I can use signals to store the samples though, right? Cause I need to store my data coming from the microphone into a memory, say like 8 samples of 32 bits. Then Call each sample, apply a filter and then read them back to the speakers when the specified control signals in the audio codec is set to high.