VHDL Historical view VHDL: VHISC Hardware Description Language - - PowerPoint PPT Presentation

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Oct 01, 2023 347 likes •410 views

VHDL Historical view VHDL: VHISC Hardware Description Language VHISC: Very High Speed Integrated Circuits Hardware languages are expected to model functionalities that once synthesized will produce physical processing devices,

SLIDE 1

VHDL – Historical view

SLIDE 2

VHDL: VHISC Hardware Description Language
VHISC: Very High Speed Integrated Circuits
Hardware languages are expected to model

functionalities that once synthesized will produce physical processing devices,

while software languages describe functions that
nce compiled will produce code for specific

processors.

J.-P. Deschamps et al., Digital Systems, DOI 10.1007/978-3-319-41198-9

SLIDE 3

Beginning 1980s
Lack of documentation for

behavior and functionality of ASIC

Standardization work initiated by

US DoD together with Intermetrics, Texas Instrument, IBM (1983)

1985: First release of VHDL
Success convinced IEEE* to

formalize it into a standard

1987: IEEE 1076-1987 released
Revised: 1993, 2000, 2002, 2007, 2008, 2019

DOI: 10.1109/IEEESTD.1988.122645

*IEEE: Institute of Electrical and Electronics Engineers

SLIDE 4

The IEEE library contains a number of packages and the std_logic_1164 is the standard that describes the definitions of logic values and basic logic operations.

SLIDE 5

Initially a specification and modeling

language - documenting behavior of ASICs

Simulation was the natural next

development and logic simulators where developed in the late 1980s.

Finally development of logic synthesis