Environmental Engineering Reference
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Figure 3. Stages of tools-based FPGA-projects development
c. Placement of physical element and
routing of their interconnections;
d. Timing of circuit delays and bit-stream
generation.
4. Project is verified by simulation when actual
timing values of delays as determined in
the crystal are considered instead of zero
or single values.
5. Crystal programming permits its JTAG,
debugging and PROM file formatting for
programmer.
Quartus II presents a large number of library
functions for design, including buffers, triggers
and latches, I/O registers and logic primitives. A
feature of library functions is low integration level.
Besides, Quartus II presents plenty of architec-
turally optimized macrofunctions that reflect the
specifics of FPGA application. The whole set of
macrofunctions may be presented by such catego-
ries of typical schemes: adders, arithmetic logic
devices, buffers, comparators, cipherers, counters,
decoders, digital filters, error detectors and correc-
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