Hey guys I'm trying to exchange 2 pairs of INOUT signals, but without much sucess so far.
I have two PS/2 controlers and I would like to exchange the PS2(1) to PS2(2) signals and at same time PS2(2) to PS2(1) signals.
Perhaps it's simpler to explain with the actual (sniped) code.
As you can see, I would like to exchage the signals between a mouse and a keyboard, using the control signal "ps2_mode_s". If this signal is '0', I need the keyboard on the first port and the mouse on the second. If it's '1', the oposite, mouse on first port and keyboard on second.
I already tried some variations, but I didn't found a proper solution.
Can anyone help, please?
I have two PS/2 controlers and I would like to exchange the PS2(1) to PS2(2) signals and at same time PS2(2) to PS2(1) signals.
Perhaps it's simpler to explain with the actual (sniped) code.
Code:
-- external ports
ps2_clk_io : inout std_logic := 'Z';
ps2_data_io : inout std_logic := 'Z';
ps2_mouse_clk_io : inout std_logic := 'Z';
ps2_mouse_data_io : inout std_logic := 'Z';
-- signals
signal ps2_mode_s : std_logic := '0';
signal PS2K_DAT_IN : std_logic;
signal PS2K_DAT_OUT : std_logic;
signal PS2K_CLK_IN : std_logic;
signal PS2K_CLK_OUT : std_logic;
signal PS2M_DAT_IN : std_logic;
signal PS2M_DAT_OUT : std_logic;
signal PS2M_CLK_IN : std_logic;
signal PS2M_CLK_OUT : std_logic;
signal ps2_data_out : std_logic;
signal ps2_clk_out : std_logic;
signal ps2_mouse_data_out : std_logic;
signal ps2_mouse_clk_out : std_logic;
-- LOGIC BLOCK
-- PS/2 keyboard
PS2K_DAT_IN <= ps2_data_io when ps2_mode_s = '0' else ps2_mouse_data_io;
PS2K_CLK_IN <= ps2_clk_io when ps2_mode_s = '0' else ps2_mouse_clk_io;
ps2_data_out <= PS2K_DAT_OUT when ps2_mode_s = '0' else PS2M_DAT_OUT;
ps2_clk_out <= PS2K_CLK_OUT when ps2_mode_s = '0' else PS2M_CLK_OUT;
ps2_data_io <= '0' when ps2_data_out = '0' else 'Z';
ps2_clk_io <= '0' when ps2_clk_out = '0' else 'Z';
-- PS/2 Mouse
PS2M_DAT_IN <= ps2_mouse_data_io when ps2_mode_s = '0' else ps2_data_io;
PS2M_CLK_IN <= ps2_mouse_clk_io when ps2_mode_s = '0' else ps2_clk_io;
ps2_mouse_data_out <= PS2M_DAT_OUT when ps2_mode_s = '0' else PS2K_DAT_OUT;
ps2_mouse_clk_out <= PS2M_CLK_OUT when ps2_mode_s = '0' else PS2K_CLK_OUT;
ps2_mouse_data_io <= '0' when ps2_mouse_data_out = '0' else 'Z';
ps2_mouse_clk_io <= '0' when ps2_mouse_clk_out = '0' else 'Z';As you can see, I would like to exchage the signals between a mouse and a keyboard, using the control signal "ps2_mode_s". If this signal is '0', I need the keyboard on the first port and the mouse on the second. If it's '1', the oposite, mouse on first port and keyboard on second.
I already tried some variations, but I didn't found a proper solution.
Can anyone help, please?