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Altera_Forum's avatar
Altera_Forum
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17 years ago

unrecognised objects in Quartus

hi everyone, i'm experimenting with my DE1 board and i've come across something strange. When coding (VHDL) I first use modelsim for simulation and syntax checking. Then the code goes straight ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

Hi DotS,

obvious error is here: (obj_counter DOWNTO obj_counter+1) means, for example ( 0 downto 1). It's incorrect. You should write (obj_counter TO obj_counter+1) or (obj_counter DOWNTO obj_counter-1).

Therefore syntesis accepts only one part of expression: obj_reg(word_counter)(obj_counter+1);