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Altera_Forum
Honored Contributor I
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Quartus Prime Error: pin name is an illegal or unsupported format

This is my entity 

entity GCP is port ( -- {ALTERA_IO_BEGIN} DO NOT REMOVE THIS LINE! --spi slave 1 M1_SPI_CLK : in std_logic; M1_SPI_MOSI : in std_logic; M1_SPI_MISO : out std_logic; M1_SPI_CS : in std_logic; --spi slave 0 M0_SPI_CLK : in std_logic; M0_SPI_MOSI : in std_logic; M0_SPI_MISO : out std_logic; M0_CS : in std_logic; CLK : in std_logic -- {ALTERA_IO_END} DO NOT REMOVE THIS LINE! ); -- {ALTERA_ATTRIBUTE_BEGIN} DO NOT REMOVE THIS LINE! -- {ALTERA_ATTRIBUTE_END} DO NOT REMOVE THIS LINE! end GCP;  

I get wornings 

 

Warning (169133): Can't reserve pin M0_CS -- pin name is an illegal or unsupported format Warning (169140): Reserve pin assignment ignored because of existing pin with name "M0_CS" 

 

And so on for each pn.  

Why? 

 

 

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