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Altera_Forum
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14 years ago

On-Chip FIFO crashes FPGA

I'm using the DE2 board with a NIOS II system. I have on-chip RAM and FIFO and a PS/2 controller attached. The FIFO is single clocked, input and output Avalon MM. I have to write the code for the ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Kevin,

The design is the On-Chip FIFO core that comes with Quartus. Im building a small system in SOPC builder. I looked at the C api and tried to copy that, however, when I try to write to any of the control registers, the registers do not take any value, nor do they have any value. They always appear in the Monitor Program Memory Viewer as question marks, where all the other memory components that I've implemented contain data, whether it is zero's or sets of FF.

Thanks,

Max Gardner