URL
https://opencores.org/ocsvn/System11/System11/trunk
[/] [System11/] [trunk/] [rtl/] [vhdl/] [datram.vhd] - Diff between revs 2 and 4
Go to most recent revision |
Show entire file |
Details |
Blame |
View Log
| Rev 2 |
Rev 4 |
| Line 89... |
Line 89... |
--
|
--
|
---------------------------------
|
---------------------------------
|
|
|
dat_write : process( clk, rst, addr_lo, cs, rw, data_in )
|
dat_write : process( clk, rst, addr_lo, cs, rw, data_in )
|
begin
|
begin
|
if clk'event and clk = '0' then
|
|
if rst = '1' then
|
if rst = '1' then
|
dat_reg0 <= "00000000";
|
dat_reg0 <= "00000000";
|
dat_reg1 <= "00000001";
|
dat_reg1 <= "00000001";
|
dat_reg2 <= "00000010";
|
dat_reg2 <= "00000010";
|
dat_reg3 <= "00000011";
|
dat_reg3 <= "00000011";
|
| Line 107... |
Line 106... |
dat_reg11 <= "00001011";
|
dat_reg11 <= "00001011";
|
dat_reg12 <= "00001100";
|
dat_reg12 <= "00001100";
|
dat_reg13 <= "00001101";
|
dat_reg13 <= "00001101";
|
dat_reg14 <= "00001110";
|
dat_reg14 <= "00001110";
|
dat_reg15 <= "00001111";
|
dat_reg15 <= "00001111";
|
else
|
elsif clk'event and clk = '0' then
|
if cs = '1' and rw = '0' then
|
if cs = '1' and rw = '0' then
|
case addr_lo is
|
case addr_lo is
|
when "0000" =>
|
when "0000" =>
|
dat_reg0 <= data_in;
|
dat_reg0 <= data_in;
|
when "0001" =>
|
when "0001" =>
|
| Line 147... |
Line 146... |
when others =>
|
when others =>
|
null;
|
null;
|
end case;
|
end case;
|
end if;
|
end if;
|
end if;
|
end if;
|
end if;
|
|
end process;
|
end process;
|
|
|
dat_read : process( addr_hi,
|
dat_read : process( addr_hi,
|
dat_reg0, dat_reg1, dat_reg2, dat_reg3,
|
dat_reg0, dat_reg1, dat_reg2, dat_reg3,
|
dat_reg4, dat_reg5, dat_reg6, dat_reg7,
|
dat_reg4, dat_reg5, dat_reg6, dat_reg7,
|
© copyright 1999-2025
OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.