Dominick.Vansevenant/Zorro-LAN-IDE
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Improved clock startup and IDE-ROM-timing

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This commit is contained in:
MHeinrichs
2020-10-09 00:17:40 +02:00
parent 02c04ac3c5
commit 8231b54f78
15 changed files with 3217 additions and 4897 deletions
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Logic/LAN_IDE_V2/LAN_IDE_CP.vhd
+11 -10
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@@ -184,14 +184,14 @@ begin
clock_init: process(reset,CLK_EXT)
begin
if(reset='1')then
if(reset='0')then
--default values
LAN_CS_RST<='0';
LAN_WR_RST<='0';
LAN_RST_SM<=nop;
LAN_A_INIT<="11"&x"FFF";
LAN_D_INIT<= x"0000";
elsif(rising_edge(CLK_EXT))then --reset is low!
elsif(rising_edge(CLK_EXT))then --reset is high!
case LAN_RST_SM is
when nop=>
LAN_CS_RST<='0';
@@ -281,13 +281,13 @@ begin
end if;
end process ADDRESS_Z3_DECODE;
ADDRESS_Z2_DECODE: process(AS,reset)
ADDRESS_Z2_DECODE: process(AMIGA_CLK,reset)
begin
if(reset='0' )then
AUTOCONFIG_Z2_ACCESS <= '0';
IDE_ACCESS <= '0';
CP_ACCESS <= '0';
elsif(falling_edge(AS))then
elsif(rising_edge(AMIGA_CLK))then
if(A(23 downto 16) = x"E8" and AUTO_CONFIG_Z2_DONE /= "111" and CFIN='0' and LAN_ACCESS = '0')then
AUTOCONFIG_Z2_ACCESS <= '1';
else
@@ -618,7 +618,7 @@ begin
-- LAN_CFG <= "ZZZZ";
A_LAN(13 downto 0)<= LAN_A_INIT(13 downto 0) when reset ='0' else
A_LAN(13 downto 0)<= LAN_A_INIT(13 downto 0) when LAN_RST_SM/=done else
Z3_ADR(14 downto 2) & Z3_A_LOW when LAN_ACCESS = '1' else
A(12 downto 1)&"00";
@@ -635,7 +635,7 @@ begin
A(7 downto 1) <= (others => 'Z');
--defined lancp signal that matches both LAN and CP addresses
DQ <= LAN_D_INIT when reset='0' else
DQ <= LAN_D_INIT when LAN_RST_SM/=done else
DQ_DATA(15 downto 0) when RW='0' and FCS='0' and Z3_DS <"1111" and LAN_ACCESS ='1' else
D when RW='0' and AS='0' and CP_ACCESS ='1' else
D when RW='0' and AS='0' and IDE_ACCESS ='1' else
@@ -669,20 +669,21 @@ begin
IDE_ENABLE <= '1';
IDE_R_S <= '1';
IDE_W_S <= '1';
ROM_OE_S <= '1';
ROM_OE_S <= '1';
elsif rising_edge(CLK_EXT) then
--default values
IDE_R_S <= '1';
IDE_W_S <= '1';
ROM_OE_S <= '1';
ROM_OE_S <= '1';
if(IDE_ACCESS='1' and AS='0' and DS='0')then
if(RW='0')then
--the write goes to the hdd!
IDE_ENABLE <= '0'; -- enable IDE on first read
IDE_W_S <= '0';
elsif(IDE_ENABLE ='1')then
ROM_OE_S <='0';
else
IDE_R_S <= IDE_ENABLE; --read from IDE instead from ROM
ROM_OE_S <= not IDE_ENABLE;
IDE_R_S <= '0'; --read from IDE instead from ROM
end if;
end if;
end if;