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Only in .: CVS
diff -ur /home/hpa/hwhacks/t80/rtl/vhdl/T80a.vhd ./T80a.vhd
--- /home/hpa/hwhacks/t80/rtl/vhdl/T80a.vhd 2002-11-24 05:51:28.000000000 -0800
+++ ./T80a.vhd 2003-10-04 21:40:03.000000000 -0700
@@ -83,6 +83,7 @@
RFSH_n : out std_logic;
HALT_n : out std_logic;
BUSAK_n : out std_logic;
+ RETI_n : out std_logic;
A : out std_logic_vector(15 downto 0);
D : inout std_logic_vector(7 downto 0)
);
@@ -156,6 +157,7 @@
RESET_n => Reset_s,
BUSRQ_n => BUSRQ_n,
BUSAK_n => BUSAK_n_i,
+ RETI_n => RETI_n,
CLK_n => CLK_n,
A => A_i,
DInst => D,
diff -ur /home/hpa/hwhacks/t80/rtl/vhdl/T80_MCode.vhd ./T80_MCode.vhd
--- /home/hpa/hwhacks/t80/rtl/vhdl/T80_MCode.vhd 2002-10-20 18:33:45.000000000 -0700
+++ ./T80_MCode.vhd 2003-10-04 21:35:12.000000000 -0700
@@ -118,6 +118,7 @@
I_CPL : out std_logic;
I_CCF : out std_logic;
I_SCF : out std_logic;
+ I_RETI : out std_logic;
I_RETN : out std_logic;
I_BT : out std_logic;
I_BC : out std_logic;
@@ -231,6 +232,7 @@
I_CPL <= '0';
I_CCF <= '0';
I_SCF <= '0';
+ I_RETI <= '0';
I_RETN <= '0';
I_BT <= '0';
I_BC <= '0';
@@ -615,7 +617,7 @@
when 3 =>
Jump <= '1';
IncDec_16 <= "0111";
- I_RETN <= '1';
+ I_RETI <= '1';
SetEI <= '1';
when others => null;
end case;
@@ -1786,7 +1788,8 @@
when 3 =>
Jump <= '1';
IncDec_16 <= "0111";
- I_RETN <= '1';
+ I_RETI <= IR(3);
+ I_RETN <= not IR(3);
when others => null;
end case;
when "01000000"|"01001000"|"01010000"|"01011000"|"01100000"|"01101000"|"01110000"|"01111000" =>
diff -ur /home/hpa/hwhacks/t80/rtl/vhdl/T80_Pack.vhd ./T80_Pack.vhd
--- /home/hpa/hwhacks/t80/rtl/vhdl/T80_Pack.vhd 2002-10-20 18:33:45.000000000 -0700
+++ ./T80_Pack.vhd 2003-10-04 21:40:26.000000000 -0700
@@ -78,6 +78,7 @@
RFSH_n : out std_logic;
HALT_n : out std_logic;
BUSAK_n : out std_logic;
+ RETI_n : out std_logic;
A : out std_logic_vector(15 downto 0);
DInst : in std_logic_vector(7 downto 0);
DI : in std_logic_vector(7 downto 0);
@@ -163,6 +164,7 @@
I_CPL : out std_logic;
I_CCF : out std_logic;
I_SCF : out std_logic;
+ I_RETI : out std_logic;
I_RETN : out std_logic;
I_BT : out std_logic;
I_BC : out std_logic;
diff -ur /home/hpa/hwhacks/t80/rtl/vhdl/T80se.vhd ./T80se.vhd
--- /home/hpa/hwhacks/t80/rtl/vhdl/T80se.vhd 2002-10-20 18:33:45.000000000 -0700
+++ ./T80se.vhd 2003-10-04 21:36:43.000000000 -0700
@@ -86,6 +86,7 @@
RFSH_n : out std_logic;
HALT_n : out std_logic;
BUSAK_n : out std_logic;
+ RETI_n : out std_logic;
A : out std_logic_vector(15 downto 0);
DI : in std_logic_vector(7 downto 0);
DO : out std_logic_vector(7 downto 0)
@@ -122,6 +123,7 @@
RESET_n => RESET_n,
BUSRQ_n => BUSRQ_n,
BUSAK_n => BUSAK_n,
+ RETI_n => RETI_n,
CLK_n => CLK_n,
A => A,
DInst => DI,
diff -ur /home/hpa/hwhacks/t80/rtl/vhdl/T80s.vhd ./T80s.vhd
--- /home/hpa/hwhacks/t80/rtl/vhdl/T80s.vhd 2002-10-20 18:33:45.000000000 -0700
+++ ./T80s.vhd 2003-10-04 21:32:44.000000000 -0700
@@ -91,6 +91,7 @@
RFSH_n : out std_logic;
HALT_n : out std_logic;
BUSAK_n : out std_logic;
+ RETI_n : out std_logic;
A : out std_logic_vector(15 downto 0);
DI : in std_logic_vector(7 downto 0);
DO : out std_logic_vector(7 downto 0)
@@ -130,6 +131,7 @@
RESET_n => RESET_n,
BUSRQ_n => BUSRQ_n,
BUSAK_n => BUSAK_n,
+ RETI_n => RETI_n,
CLK_n => CLK_n,
A => A,
DInst => DI,
diff -ur /home/hpa/hwhacks/t80/rtl/vhdl/T80.vhd ./T80.vhd
--- /home/hpa/hwhacks/t80/rtl/vhdl/T80.vhd 2002-11-24 05:51:28.000000000 -0800
+++ ./T80.vhd 2003-10-04 21:38:52.000000000 -0700
@@ -100,6 +100,7 @@
RFSH_n : out std_logic;
HALT_n : out std_logic;
BUSAK_n : out std_logic;
+ RETI_n : out std_logic;
A : out std_logic_vector(15 downto 0);
DInst : in std_logic_vector(7 downto 0);
DI : in std_logic_vector(7 downto 0);
@@ -227,6 +228,7 @@
signal I_CPL : std_logic;
signal I_CCF : std_logic;
signal I_SCF : std_logic;
+ signal I_RETI : std_logic;
signal I_RETN : std_logic;
signal I_BT : std_logic;
signal I_BC : std_logic;
@@ -292,6 +294,7 @@
I_CPL => I_CPL,
I_CCF => I_CCF,
I_SCF => I_SCF,
+ I_RETI => I_RETI,
I_RETN => I_RETN,
I_BT => I_BT,
I_BC => I_BC,
@@ -974,6 +977,7 @@
Auto_Wait_t1 <= '0';
Auto_Wait_t2 <= '0';
M1_n <= '1';
+ RETI_n <= '1';
elsif CLK_n'event and CLK_n = '1' then
if CEN = '1' then
if T_Res = '1' then
@@ -981,10 +985,11 @@
else
Auto_Wait_t1 <= Auto_Wait or IORQ_i;
end if;
- Auto_Wait_t2 <= Auto_Wait_t1;
+ Auto_Wait_t2 <= Auto_Wait_t1 and not T_Res;
No_BTR <= (I_BT and (not IR(4) or not F(Flag_P))) or
(I_BC and (not IR(4) or F(Flag_Z) or not F(Flag_P))) or
(I_BTR and (not IR(4) or F(Flag_Z)));
+ RETI_n <= not I_RETI;
if TState = 2 then
if SetEI = '1' then
IntE_FF1 <= '1';
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