IEEE 1076

The IEEE Standard 1076 defines the VHSIC Hardware Description Language or VHDL. It was originally developed under contract F33615-83-C-1003 from the United States Air Force awarded in 1983 to a team with Intermetrics, Inc. as language experts and prime contractor, with Texas Instruments as chip design experts and IBM as computer system design experts. The language has undergone numerous revisions and has a variety of sub-standards associated with it that augment or extend it in important ways.^{[citation needed]}

1076 was and continues to be a milestone in the design of electronic systems.^{[citation needed]}

Revisions

• 1076-1987 First standardized revision of ver 7.2 of the language from the United States Air Force.
• 1076-1993 (ISBN 1-55937-376-8) Significant improvements resulting from several years of feedback. Probably the most widely used version with the greatest vendor tool support.
• 1076-2000 Minor revision. Introduces the use of protected types.
• 1076-2002 Minor revision of 1076-2000. Rules with regard to buffer ports are relaxed.
• 1076-2008 (previously referred to as 1076-200x) Major revision released on 2009-01-26. Among other changes, this standard introduces the use of external signals.

Related standards

• IEEE 1076.1 VHDL Analog and Mixed-Signal
• IEEE 1076.1.1 VHDL-AMS Standard Packages (stdpkgs)
• IEEE 1076.2 VHDL Math Package (math)
• IEEE 1076.3 VHDL Synthesis Package (vhdlsynth)
• IEEE 1076.3 VHDL Synthesis Package - Floating Point (fphdl)
• IEEE 1076.4 Timing (VHDL Initiative Towards ASIC Libraries: vital)
• IEEE 1076.6 VHDL Synthesis Interoperability
• IEEE 1164 VHDL Multivalue Logic (std_logic_1164) Packages