95 lines
3.2 KiB
VHDL
95 lines
3.2 KiB
VHDL
-- Package standard as defined by IEEE 1076-2008
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package standard is
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-- Predefined enumeration types:
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type BOOLEAN is (FALSE, TRUE);
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type BIT is ('0', '1');
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type CHARACTER is (
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NUL, SOH, STX, ETX, EOT, ENQ, ACK, BEL,
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BS, HT, LF, VT, FF, CR, SO, SI,
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DLE, DC1, DC2, DC3, DC4, NAK, SYN, ETB,
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CAN, EM, SUB, ESC, FSP, GSP, RSP, USP,
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' ', '!', '"', '#', '$', '%', '&', ''',
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'(', ')', '*', '+', ',', '-', '.', '/',
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'0', '1', '2', '3', '4', '5', '6', '7',
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'8', '9', ':', ';', '<', '=', '>', '?',
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'@', 'A', 'B', 'C', 'D', 'E', 'F', 'G',
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'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
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'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
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'X', 'Y', 'Z', '[', '\', ']', '^', '_',
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'`', 'a', 'b', 'c', 'd', 'e', 'f', 'g',
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'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
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'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
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'x', 'y', 'z', '{', '|', '}', '~', DEL,
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C128, C129, C130, C131, C132, C133, C134, C135,
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C136, C137, C138, C139, C140, C141, C142, C143,
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C144, C145, C146, C147, C148, C149, C150, C151,
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C152, C153, C154, C155, C156, C157, C158, C159,
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' ', '¡', '¢', '£', '¤', '¥', '¦', '§',
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'¨', '©', 'ª', '«', '¬', '', '®', '¯',
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'°', '±', '²', '³', '´', 'µ', '¶', '·',
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'¸', '¹', 'º', '»', '¼', '½', '¾', '¿',
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'À', 'Á', 'Â', 'Ã', 'Ä', 'Å', 'Æ', 'Ç',
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'È', 'É', 'Ê', 'Ë', 'Ì', 'Í', 'Î', 'Ï',
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'Ð', 'Ñ', 'Ò', 'Ó', 'Ô', 'Õ', 'Ö', '×',
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'Ø', 'Ù', 'Ú', 'Û', 'Ü', 'Ý', 'Þ', 'ß',
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'à', 'á', 'â', 'ã', 'ä', 'å', 'æ', 'ç',
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'è', 'é', 'ê', 'ë', 'ì', 'í', 'î', 'ï',
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'ð', 'ñ', 'ò', 'ó', 'ô', 'õ', 'ö', '÷',
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'ø', 'ù', 'ú', 'û', 'ü', 'ý', 'þ', 'ÿ');
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type SEVERITY_LEVEL is (NOTE, WARNING, ERROR, FAILURE);
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type INTEGER is range -2147483647 to 2147483647;
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type REAL is range -1.7976931348623157e308 to 1.7976931348623157e308;
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type TIME is range -9223372036854775807 to 9223372036854775807
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units
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fs; -- femtosecond
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ps = 1000 fs; -- picosecond
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ns = 1000 ps; -- nanosecond
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us = 1000 ns; -- microsecond
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ms = 1000 us; -- millisecond
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sec = 1000 ms; -- second
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min = 60 sec; -- minute
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hr= 60 min; -- hour
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end units;
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subtype DELAY_LENGTH is TIME range 0 fs to TIME'HIGH;
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impure function NOW return DELAY_LENGTH;
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subtype NATURAL is INTEGER range 0 to INTEGER'HIGH;
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subtype POSITIVE is INTEGER range 1 to INTEGER'HIGH;
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type STRING is array (POSITIVE range <>) of CHARACTER;
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type BOOLEAN_VECTOR is array (NATURAL range <>) of BOOLEAN;
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type BIT_VECTOR is array (NATURAL range <>) of BIT;
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type INTEGER_VECTOR is array (NATURAL range <>) of INTEGER;
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type REAL_VECTOR is array (NATURAL range <>) of REAL;
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type TIME_VECTOR is array (NATURAL range <>) of TIME;
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type FILE_OPEN_KIND is (READ_MODE,
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WRITE_MODE,
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APPEND_MODE);
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type FILE_OPEN_STATUS is (OPEN_OK,
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STATUS_ERROR,
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NAME_ERROR,
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MODE_ERROR);
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attribute FOREIGN: STRING;
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function RISING_EDGE(signal S: BOOLEAN) return BOOLEAN;
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function RISING_EDGE(signal B: BIT) return BOOLEAN;
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function FALLING_EDGE(signal S: BOOLEAN) return BOOLEAN;
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function FALLING_EDGE(signal B: BIT) return BOOLEAN;
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end package;
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