ELLA (programming language)

ELLA is a hardware description language and support toolset, developed in the United Kingdom by the Royal Signals and Radar Establishment during the 1980s and 1990s, which also developed the compiler for the programming language, ALGOL 68RS, used to write ELLA.
ELLA has tools to perform:

ELLA is a winner of the 1989 Queen's Award for Technological Achievement.

Sample

Sample originally from ftp://ftp.dra.hmg.gb/pub/ella, public release.
Code for matrix multiplication hardware design verification:


MAC ZIP = -> t:
 .
 
MAC TRANSPOSE = -> t:
 matrix.
MAC INNER_PRODUCT
 = -> s:
 IF n = 1 THEN *vector
 ELSE *vector + INNER_PRODUCT vector
 FI.
MAC MATRIX_MULT =
 -> s:
BEGIN
 LET transposed_matrix2 = TRANSPOSE matrix2.
OUTPUT 
 INNER_PRODUCTZIP
END.
TYPE element = NEW elt/,
 product = NEW prd/.
FN PLUS = -> product:
 ARITH integer1 + integer2.
FN MULT = -> product:
 ARITH integer1 * integer2.
FN MULT_234 = ->
 product: 
 MATRIX_MULT.
FN TEST = -> product:
,
 ), 
 m2 =, 
,
 ).
 OUTPUT
 MULT_234 
).
COM test: just displaysignal MOC