Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

Quartus Prime Lite: Error in WHEN conditional

This question is very basic, but I just started learning VHDL, and I can't figure out the error.So, I'm using Quartus Prime Lite, and getting error error (10500): vhdl syntax error at p...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

"when" can only be used in procedural code in VHDL 2008. Otherwise it is limited to architecture bodies outside of processes only.

Dont cares are perfectly synthesisable, it tells the compiler you really dont care, and allows it to chose what value to take.