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Altera_Forum
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15 years ago

TSE MAC catatonic

I've got a real head-scratcher of a problem with the Altera TSE MAC core. Here's the outline: * Altera/Terasic DE2-115 board, Cyclone IV-E FPGA * Full Quartus subscription, but no TSE license...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

While trying to get you a clean capture of the MAC initialization, I found the bug... it was quite embarassing. I missed a ~ operator when masking out the half-duplex enable bit on link-up, so when the link came up the Command_Config register got mistakenly cleared. Oops.

It looks like things are working more now, I have some DMA alignment issues to take care of but the MAC seems to be OK. I did have to switch to Quartus 11.0 after encountering an RX FIFO bug in 9.1sp2 (underflow, most likely).

Thanks for the help though!