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Altera_Forum
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16 years ago

What do these warning mean?(VHDL)

Warning: Synthesized away the following node(s): Warning: Synthesized away the following LCELL buffer node(s): Warning (14320): Synthesized away node "lpm_mult:Mult2|mult_v6t:auto_generated|l...
Altera_Forum's avatar
Altera_Forum
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16 years ago

No, I mean that Quartus most likely reports bits, that have been discarded intentionally, by design. E.g. you have an 16x16 multiply. According to your number format, you scale the result to 16 bit, apply saturation logic to the 8 upper and cut 8 lower bits. The latter causes a warning.