-- Florian Bruhin
-- Bildungszentrum Uster
-- 22.05.2012
-- RSFF.vhdl - RS-Flipflop
library ieee;
use ieee.std_logic_1164.all;
entity RSFF is
port (
nSet, nRes: in std_logic;
Q, nQ: out std_logic
);
end entity;
architecture RSFF_behave of RSFF is
signal hQ, hnQ: std_logic;
begin
hQ <= (nSet nand hnQ);
hnQ <= (nRes nand hQ);
Q <= hQ;
nQ <= hnQ;
-- .---.
-- | |
-- nSet --+-| & |o-+----- Q
-- +-| | |
-- | '---' /
-- \ /
-- \ / hQ
-- \ /
-- X
-- / \
-- / \ hnQ
-- / \
-- | .---. \
-- +-| | |
-- nRes --+-| & |o-+----- nQ
-- | |
-- '---'
end architecture;
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