URL
https://opencores.org/ocsvn/mlite/mlite/trunk
[/] [mlite/] [trunk/] [vhdl/] [mem_ctrl.vhd] - Diff between revs 43 and 47
Go to most recent revision |
Show entire file |
Details |
Blame |
View Log
| Rev 43 |
Rev 47 |
| Line 145... |
Line 145... |
end if;
|
end if;
|
else
|
else
|
if setup_state = STATE_FETCH then
|
if setup_state = STATE_FETCH then
|
pause := '1';
|
pause := '1';
|
byte_sel_next := "0000";
|
byte_sel_next := "0000";
|
|
if mem_pause = '0' then
|
setup_state_next := STATE_ADDR;
|
setup_state_next := STATE_ADDR;
|
|
end if;
|
elsif setup_state = STATE_ADDR then
|
elsif setup_state = STATE_ADDR then
|
address_next := address_data;
|
address_next := address_data;
|
if write_next ='1' and address_data(31) = '0' then
|
if write_next ='1' and address_data(31) = '0' then
|
pause := '1';
|
pause := '1';
|
byte_sel_next := "0000";
|
byte_sel_next := "0000";
|
|
if mem_pause = '0' then
|
setup_state_next := STATE_WRITE; --4 cycle access
|
setup_state_next := STATE_WRITE; --4 cycle access
|
|
end if;
|
else
|
else
|
if mem_pause = '0' then
|
if mem_pause = '0' then
|
opcode_next := next_opcode_reg;
|
opcode_next := next_opcode_reg;
|
setup_state_next := STATE_FETCH; --2 cycle access
|
setup_state_next := STATE_FETCH; --2 cycle access
|
end if;
|
end if;
|
| Line 168... |
Line 172... |
end if;
|
end if;
|
elsif setup_state = STATE_PAUSE then
|
elsif setup_state = STATE_PAUSE then
|
address_next := address_data;
|
address_next := address_data;
|
byte_sel_next := "0000";
|
byte_sel_next := "0000";
|
opcode_next := next_opcode_reg;
|
opcode_next := next_opcode_reg;
|
|
if mem_pause = '0' then
|
setup_state_next := STATE_FETCH;
|
setup_state_next := STATE_FETCH;
|
end if;
|
end if;
|
end if;
|
end if;
|
|
end if;
|
|
|
if nullify_op = '1' then
|
if nullify_op = '1' then
|
opcode_next := ZERO; --NOP
|
opcode_next := ZERO; --NOP
|
end if;
|
end if;
|
if reset_in = '1' then
|
if reset_in = '1' then
|
© copyright 1999-2024
OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.