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simplify processes

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This commit is contained in:
Markus Fröschle
2016-01-15 08:37:40 +00:00
parent 85b4c0f33d
commit 45894cb3f2
2 changed files with 29 additions and 19 deletions
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26
Video/DDR_CTR.vhd
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@@ -603,25 +603,27 @@ BEGIN
VARIABLE stdVec3: std_logic_vector(2 DOWNTO 0);
BEGIN
FB_REGDDR_d <= FB_REGDDR_q;
(FB_VDOE(0), FB_VDOE(1)) <= std_logic_vector'("00");
(FB_LE(0), FB_LE(1), FB_VDOE(2), FB_LE(2), FB_VDOE(3), FB_LE(3),
VIDEO_DDR_TA, BUS_CYC_END) <= std_logic_vector'("00000000");
fb_vdoe <= (OTHERS => '0');
fb_le <= (OTHERS => '0');
video_ddr_ta <= '0';
bus_cyc_end <= '0';
stdVec3 := FB_REGDDR_q;
CASE stdVec3 IS
WHEN "000" =>
FB_LE(0) <= not nFB_WR;
-- LOS WENN BEREIT ODER IMMER BEI LINE WRITE
IF (BUS_CYC_q or (DDR_SEL and LINE and (not nFB_WR)))='1' THEN
IF (BUS_CYC_q or (DDR_SEL and LINE and (not nFB_WR))) = '1' THEN
FB_REGDDR_d <= "001";
ELSE
FB_REGDDR_d <= "000";
END IF;
WHEN "001" =>
IF (DDR_CS_q)='1' THEN
IF DDR_CS_q = '1' THEN
FB_LE(0) <= not nFB_WR;
VIDEO_DDR_TA <= vcc;
IF (LINE)='1' THEN
IF LINE ='1' THEN
FB_VDOE(0) <= (not nFB_OE) and (not DDR_CONFIG);
FB_REGDDR_d <= "010";
ELSE
@@ -634,7 +636,7 @@ BEGIN
END IF;
WHEN "010" =>
IF (DDR_CS_q)='1' THEN
IF DDR_CS_q = '1' THEN
FB_VDOE(1) <= (not nFB_OE) and (not DDR_CONFIG);
FB_LE(1) <= not nFB_WR;
VIDEO_DDR_TA <= vcc;
@@ -644,12 +646,12 @@ BEGIN
END IF;
WHEN "011" =>
IF (DDR_CS_q)='1' THEN
IF DDR_CS_q ='1' THEN
FB_VDOE(2) <= (not nFB_OE) and (not DDR_CONFIG);
FB_LE(2) <= not nFB_WR;
-- BEI LINE WRITE EVT. WARTEN
IF ((not BUS_CYC_q) and LINE and (not nFB_WR))='1' THEN
IF ((not BUS_CYC_q) and LINE and (not nFB_WR)) = '1' THEN
FB_REGDDR_d <= "011";
ELSE
VIDEO_DDR_TA <= vcc;
@@ -660,7 +662,7 @@ BEGIN
END IF;
WHEN "100" =>
IF (DDR_CS_q)='1' THEN
IF DDR_CS_q = '1' THEN
FB_VDOE(3) <= (not nFB_OE) and (not MAIN_CLK) and (not DDR_CONFIG);
FB_LE(3) <= not nFB_WR;
VIDEO_DDR_TA <= vcc;
@@ -672,7 +674,7 @@ BEGIN
WHEN others =>
END CASE;
stdVec3 := (others=>'0'); -- no storage needed
stdVec3 := (OTHERS => '0'); -- no storage needed
END PROCESS;
-- DDR STEUERUNG -----------------------------------------------------
@@ -690,6 +692,7 @@ BEGIN
nVRAS <= not VRAS;
nVCAS <= not VCAS;
nVWE <= not VWE;
SR_DDR_WR_clk <= DDRCLK0;
SR_DDRWR_D_SEL_clk <= DDRCLK0;
SR_VDMP0_clk_ctrl <= DDRCLK0;
@@ -697,6 +700,7 @@ BEGIN
CPU_AC_clk <= DDRCLK0;
FIFO_AC_clk <= DDRCLK0;
BLITTER_AC_clk <= DDRCLK0;
DDRWR_D_SEL1 <= BLITTER_AC_q;
-- SELECT LOGIC