A/D converter-FPGA-USB

A couple of suggestions:

1) Look at the 2's compliment data and sign-magnitude data values. Is your conversion logic correct?

2) Create a Modelsim simulation and check your logic.

Cheers,

Dave

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When I want to capture a block of samples from an ADC, I'll typically write my own code to capture to a RAM block or multiple RAM blocks. The RAMs are configured as dual-ported, with one side connected to the ADC, and the other connected to an Avalon-MM system. I then read the captured samples from RAM using the JTAG interface, via the method described in this tutorial

http://www.alterawiki.com/wiki/using...aster_tutorial

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In this tutorial, in "software version" section It is mentioned that:The tutorial was developed using Quartus II 11.1sp1 (full edition) under Windows XP Professional 32-bit.

Quartus II 11.1sp1 (full edition)--> means "Subscription Edition"

am I right? and that means it doesn't work with Web Edition (free) or it also works with web edition?

--- Quote Start ---

In this tutorial, in "software version" section It is mentioned that:The tutorial was developed using Quartus II 11.1sp1 (full edition) under Windows XP Professional 32-bit.

Quartus II 11.1sp1 (full edition)--> means "Subscription Edition"

am I right? and that means it doesn't work with Web Edition (free) or it also works with web edition?

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Read the tutorial - Appendix A lists all the versions I tested the scripts under - including Web Editions.

Cheers,

Dave