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Altera_Forum
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16 years ago

Nios+PCI doesn't work together, help.

I create Nios+PCI compiler (PCI target 32-bit) system on Cyclone II. When PCI is connected, Nios doesn't load any software, but works good without PCI. I've made PCI in reset, without clk - doesn't h...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Try to localize the problem. For example:

1.Connect SignalTap to PCI IO on fully working FPGA, and compare bus configuration cycle with PCI standard.

2.Disconnect PCI from IO pad, connect to FPGA via JTAG and find out, does PCI IP core is working.

3.Check out the state of master-mode only PCI signals (REQ,GNT and so on).

Or ask this question to mySupport at Altera.