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--===========================================================================---- -- -- T E S T B E N C H tesetbench2 - CPU09 Testbench. -- -- www.OpenCores.Org - September 2003 -- This core adheres to the GNU public license -- -- File name : Testbench2.vhd -- -- Purpose : cpu09 Microprocessor Test Bench 2 -- Contains ROM to read sector from -- a none existant Compact Flash module -- -- Dependencies : ieee.Std_Logic_1164 -- ieee.std_logic_unsigned -- ieee.std_logic_arith -- ieee.numeric_std -- -- Uses : cpu09 (cpu09.vhd) CPU core -- -- Author : John E. Kent -- dilbert57@opencores.org -- --===========================================================================---- -- -- Revision History: --===========================================================================-- -- -- Version 0.1 - 12st April 2003 - John Kent -- First version -- -- Version 1.0- 6 Sep 2003 - John Kent -- Initial release to Open Cores -- -- Version 1.1 - 25th Jan 2004 - John Kent -- removed "test_alu" and "test_cc" -- --===========================================================================-- library ieee; use ieee.std_logic_1164.all; use IEEE.STD_LOGIC_ARITH.ALL; use IEEE.STD_LOGIC_UNSIGNED.ALL; use ieee.numeric_std.all; entity my_testbench2 is end my_testbench2; ------------------------------------------------------------------------------- -- Architecture for memio Controller Unit ------------------------------------------------------------------------------- architecture behavior of my_testbench2 is ----------------------------------------------------------------------------- -- Signals ----------------------------------------------------------------------------- -- CPU Interface signals signal SysClk : Std_Logic; signal cpu_reset : Std_Logic; signal cpu_rw : Std_Logic; signal cpu_vma : Std_Logic; signal cpu_addr : Std_Logic_Vector(15 downto 0); signal cpu_data_in : Std_Logic_Vector(7 downto 0); signal cpu_data_out: Std_Logic_Vector(7 downto 0); signal cpu_irq : Std_Logic; signal cpu_nmi : Std_Logic; signal cpu_firq : std_logic; constant width : integer := 8; constant memsize : integer := 128; type rom_array is array(0 to memsize-1) of std_logic_vector(width-1 downto 0); constant rom_data : rom_array := ( "00010000", -- $F800 LDS #$F878 (Point to dummy return to test stack) "11001110", "11111000", "01111000", "10000110", -- $F804 LDA #$E0 *** START "11100000", "00011111", -- $F806 TFR A,DPR "10001011", --------------------------- -- "10001101", -- $F80E BSR WAITRDY $F86A -- "01100000", "10001101", -- $F808 BSR $F874 -- test sub call "01101010", --------------------------- "10000110", -- $F80A LDA #$E0 "11100000", "10010111", -- $F80C STA <$E016 "00010110", --------------------------- -- "10001101", -- $F80E BSR WAITRDY $F86A -- "01011010", "10001101", -- $F80E BSR $F810 "00000000", -------------------------- "10000110", -- $F810 LDA #$01 "00000001", "10010111", -- $F812 STA <$E011 "00010001", "10000110", -- $F814 LDA #$EF "11101111", "10010111", -- $F816 STA <$E017 "00010111", -------------------------- -- "10001101", -- $F818 BSR WAITRDY $F86A -- "01010000", "10001101", -- $F818 BSR $F816 "00000000", -------------------------- "00010000", -- $F81A LDY #$F800 "10001110", "11111000", "00000000", "11000110", -- $F81E LDB #$7C "01111100", "10000110", -- $F820 LDA #$01 *** RDLP1 "00000001", "10010111", -- $F822 STA <$E012 "00010010", "11010111", -- $F824 STB <$E013 "00010011", "10000110", -- $F826 LDA #$F4 "11110100", "10010111", -- $F828 STA <$E014 "00010100", "01001111", -- $F82A CLRA "10010111", -- $F82B STA <$E015 "00010101", "10001110", -- $F82D LDX #512 "00000010", "00000000", "10000110", -- $F830 LDA #$20 "00100000", "10010111", -- $F832 STA <$E017 "00010111", -------------------------- -- "10001101", -- $F834 BSR WAITRDY $F86A -- "00110100", "10001101", -- $F834 BSR * "00000000", -------------------------- "10010110", -- $F836 LDA <$E017 *** WAITDRQ "00010111", "10000101", -- $F838 BITA #$08 "00001000", "00100111", -- $F83A BEQ WAITDRQ "11111010", "10010110", -- $F83C LDA <$E010 "00010000", "10100111", -- $F83E STA ,Y+ "10100000", "00110000", -- $F840 LEAX -1,X "00011111", "10001100", -- $F842 CMPX #$0000 "00000000", "00000000", "00100110", -- $F845 BNE RDLP2 "11110011", -------------------------- -- "10001101", -- $F847 BSR WAITRDY $F86A -- "00100001", "10001101", -- $F847 BSR $F841 "00000000", -------------------------- "01011100", -- $F849 INCB "11000001", -- $F84A CMPB #$80 "10000000", "00100110", -- $F84C BNE RDLP1 "11010110", "10001110", -- $F84E LDX #$FF97 "11111111", "10010111", "00010000", -- $F851 LDY #$F000 "10001110", "11110000", "00000000", "11000110", -- $F855 LDB #$61 "01100001", "10100110", -- $F857 LDA 0,X+ *** MOVELP "10000000", "10100111", -- $F859 STA 0,Y+ "10100000", "01011010", -- $F85B DECB ---------------------------- -- "00100110", -- $F85C BNE MOVELP -- "11111001", "00100110", --$F85C BNE $F861 "00000011", ---------------------------- "01111110", -- $F85E JMP $F000 "11110000", "00000000", "00001111", -- $F861 CLR <$E030 "00110000", "01001111", -- $F863 CLRA "00011111", -- $F864 TFR A,DPR "10001011", "01101110", -- $F866 JMP [$FFFE] "10011111", "11111111", "11111110", -- -- Wait for Ready -- "10010110", -- $F86A LDA <$E017 *** WAITRDY "00010111", "00101011", -- $F86C BMI WAITRDY "11111100", "10010110", -- $F86E LDA <$E017 "00010111", "10000101", -- $F870 BITA #$40 "01000000", "00100111", -- $F872 BNE WAITRQY "11110110", "00111001", -- $F874 RTS "00010010", -- $F875 NOP "11111000", -- $F876 FDB $F80A -- dummy sub return "00001010", "11111000", -- $F878 FDB $F800 "00000000", "11111000", -- $F87A FDB $F800 "00000000", "11111000", -- $F87C FDB $F800 "00000000", "11111000", -- $F87E FDB $F800 "00000000" ); component cpu09 port ( clk: in std_logic; rst: in std_logic; rw: out std_logic; -- Asynchronous memory interface vma: out std_logic; address: out std_logic_vector(15 downto 0); data_in: in std_logic_vector(7 downto 0); data_out: out std_logic_vector(7 downto 0); halt: in std_logic; hold: in std_logic; irq: in std_logic; nmi: in std_logic; firq: in std_logic ); end component cpu09; begin cpu : cpu09 port map ( clk => SysClk, rst => cpu_reset, rw => cpu_rw, vma => cpu_vma, address => cpu_addr(15 downto 0), data_in => cpu_data_in, data_out => cpu_data_out, halt => '0', hold => '0', irq => cpu_irq, nmi => cpu_nmi, firq => cpu_firq ); -- *** Test Bench - User Defined Section *** tb : PROCESS variable count : integer; BEGIN cpu_reset <= '0'; SysClk <= '0'; cpu_irq <= '0'; cpu_nmi <= '0'; cpu_firq <= '0'; for count in 0 to 512 loop SysClk <= '0'; if count = 0 then cpu_reset <= '1'; elsif count = 1 then cpu_reset <= '0'; end if; wait for 100 ns; SysClk <= '1'; wait for 100 ns; end loop; wait; -- will wait forever END PROCESS; -- *** End Test Bench - User Defined Section *** rom : PROCESS( cpu_addr ) begin cpu_data_in <= rom_data(conv_integer(cpu_addr(6 downto 0))); end process; end behavior; --===================== End of architecture =======================--
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