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finally fixed multiple drivers problem

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This commit is contained in:
Markus Fröschle
2016-07-28 11:48:10 +00:00
parent 69d3f17a8b
commit 3cddba74a6
9 changed files with 760 additions and 907 deletions
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8
DSP/DSP.vhd
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@@ -49,7 +49,8 @@ ENTITY dsp IS
nSROE : OUT std_logic;
DSP_INT : OUT std_logic;
DSP_TA : OUT std_logic;
FB_AD : INOUT std_logic_vector(31 DOWNTO 0);
fb_ad_in : in std_logic_vector(31 downto 0);
fb_ad_out : out std_logic_vector(31 downto 0);
IO : INOUT std_logic_vector(17 DOWNTO 0);
SRD : INOUT std_logic_vector(15 DOWNTO 0)
);
@@ -72,6 +73,7 @@ BEGIN
DSP_INT <= '0';
DSP_TA <= '0';
IO(17 DOWNTO 0) <= FB_ADR(18 DOWNTO 1);
SRD(15 DOWNTO 0) <= FB_AD(31 DOWNTO 16) WHEN nFB_WR = '0' AND nSRCS = '0' ELSE "ZZZZZZZZZZZZZZZZ";
FB_AD(31 DOWNTO 16) <= SRD(15 DOWNTO 0) WHEN nFB_OE = '0' AND nSRCS = '0' ELSE "ZZZZZZZZZZZZZZZZ";
SRD(15 DOWNTO 0) <= fb_ad_in(31 DOWNTO 16) WHEN nFB_WR = '0' AND nSRCS = '0' ELSE (others => 'Z');
-- fb_ad_out(31 DOWNTO 16) <= SRD(15 DOWNTO 0) WHEN nFB_OE = '0' AND nSRCS = '0' ELSE (others => 'Z');
fb_ad_out(31 downto 0) <= (others => 'Z'); -- otherwise we get a constant driver error
END rtl;