diff options
Diffstat (limited to 'bbc_micro_de1.vhd')
| -rw-r--r-- | bbc_micro_de1.vhd | 40 |
1 files changed, 1 insertions, 39 deletions
diff --git a/bbc_micro_de1.vhd b/bbc_micro_de1.vhd index 03e5a65..3cdb112 100644 --- a/bbc_micro_de1.vhd +++ b/bbc_micro_de1.vhd @@ -282,32 +282,6 @@ port ( );
end component;
--------------
--- MOS ROM
--------------
-
-component os12 IS
- PORT
- (
- address : IN STD_LOGIC_VECTOR (13 DOWNTO 0);
- clock : IN STD_LOGIC ;
- q : OUT STD_LOGIC_VECTOR (7 DOWNTO 0)
- );
-end component;
-
---------------
--- Test ROM
---------------
-
-component ehbasic IS
- PORT
- (
- address : IN STD_LOGIC_VECTOR (13 DOWNTO 0);
- clock : IN STD_LOGIC ;
- q : OUT STD_LOGIC_VECTOR (7 DOWNTO 0)
- );
-end component;
-
--------------
-- 6522 VIA
--------------
@@ -616,9 +590,6 @@ signal ttxt_g : std_logic; signal ttxt_b : std_logic;
signal ttxt_y : std_logic;
--- MOS ROM signals
-signal mos_d : std_logic_vector(7 downto 0);
-
-- System VIA signals
signal sys_via_do : std_logic_vector(7 downto 0);
signal sys_via_do_oe_n : std_logic;
@@ -827,15 +798,6 @@ begin ttxt_r, ttxt_g, ttxt_b, ttxt_y
);
- -- MOS ROM
- mos : os12 port map (
- cpu_a(13 downto 0),
- clock,
- mos_d );
--- test_rom : ehbasic port map (
--- cpu_a(13 downto 0),
--- clock, mos_d );
-
-- System VIA
system_via : m6522 port map (
cpu_a(3 downto 0),
@@ -1094,7 +1056,7 @@ begin cpu_di <=
SRAM_DQ(7 downto 0) when ram_enable = '1' else
FL_DQ when rom_enable = '1' else
- mos_d when mos_enable = '1' else
+ FL_DQ when mos_enable = '1' else
crtc_do when crtc_enable = '1' else
"00000010" when acia_enable = '1' else
sys_via_do when sys_via_enable = '1' else
|