220.127.116.11. VHDL Standard Libraries and Packages
The STD library is part of the VHDL language standard and includes the packages standard (included in every project by default) and textio. For compatibility with older designs, the Intel® Quartus® Prime software also supports the following vendor-specific packages and libraries:
- Synopsys* packages such as std_logic_arith and std_logic_unsigned in the IEEE library.
- Mentor Graphics* packages such as std_logic_arith in the ARITHMETIC library.
- Primitive packages altera_primitives_components (for primitives such as GLOBAL and DFFE) and maxplus2 in the ALTERA library.
- IP core packages altera_mf_components in the ALTERA_MF library for specific IP cores including LCELL. In addition, lpm_components in the LPM library for library of parameterized modules (LPM) functions.
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