Revision 188
Added by markw almost 11 years ago
| de1/gpio.vhd | ||
|---|---|---|
|
use ieee.numeric_std.all;
|
||
|
|
||
|
entity gpio is
|
||
|
generic
|
||
|
(
|
||
|
cartridge_cycle_length : in integer := 32
|
||
|
);
|
||
|
port
|
||
|
(
|
||
|
clk : in std_logic;
|
||
|
reset_n : in std_logic;
|
||
|
|
||
|
gpio_enable : in std_logic;
|
||
|
|
||
| ... | ... | |
|
|
||
|
read_write_n <= not(pbi_write_enable);
|
||
|
|
||
|
cart_complete <= cart_request; -- TODO!
|
||
|
cart_delay : entity work.delay_line
|
||
|
generic map (COUNT=>cartridge_cycle_length-1)
|
||
|
port map(clk=>clk,sync_reset=>'0',data_in=>cart_request,enable=>'1',reset_n=>reset_n,data_out=>cart_complete);
|
||
|
|
||
|
rd4_async <= gpio_enable and GPIO_0_IN(22);
|
||
|
cart_rd4_synchronizer : synchronizer
|
||
Also available in: Unified diff
Reconnected the cartrige adaptor - frogger works, nothing else tested!