Antminer S9 - Vivado and EMIO

The second project was to learn how to work with EMIO. This ended up being both simpler and much more powerful than I realized, but it was a long path getting to a simple and elegant solution.

It boils down to this. You can take Vivado, pull in a Zynq block, enable as many EMIO pin as you want, then just declare that they all connect to external ports. Write a constraint file that connects the signals to the device pins and you are done.

For the Antminer S9, we have four onboard LEDs and 54 pins in the 9 connectors J1 through J9. 58 pins in all (and we have 64 EMIO signals available).

• Board files
• Vivado refresher
• Vivado - blink board LEDs (fail)
• Vivado - other ideas about EMIO
• Vivado - blink board LEDs - round 2
• Vivado - more ideas about EMIO
• Vivado - future work