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Altera_Forum
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10 years ago

[2 Questions] How to use keyboard as input means for Cyclone II DE1 Board? and more

Greetings Altera Forum! I've got some problems that's been bugging me for quite some time now. I can't find the answer (or I lack googling skills). Question 1: How can I use a keyboard as a ...
Altera_Forum's avatar
Altera_Forum
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10 years ago

Many development boards include PS2 connectors for keyboards. See the schematics for information on safely hooking a PS2 port to an FPGA. There are multiple references on the internet on the protocol used for PS2 keyboards. Also, these same boards usually include example projects using the PS2 port.

I've never used VHDL attributes for pin assignments. Are these even supported by the Altera tools? I'd recommend that you stick with standard I/O constraints.