URL
https://opencores.org/ocsvn/storm_core/storm_core/trunk
Subversion Repositories storm_core
Compare Revisions
- This comparison shows the changes necessary to convert path
/
- from Rev 33 to Rev 34
- ↔ Reverse comparison
Rev 33 → Rev 34
/storm_core/trunk/rtl/ALU.vhd
3,7 → 3,7
-- # *************************************************** # |
-- # Arithmetical/Logical/MCR_Access Unit # |
-- # *************************************************** # |
-- # Last modified: 26.03.2012 # |
-- # Last modified: 04.04.2012 # |
-- ####################################################### |
|
library IEEE; |
130,7 → 130,7
ALU_OUT <= OP_A xor OP_B; |
when L_NOT => -- NOT: result = not(OP_A AND OP_B) |
if (STORM_MODE = TRUE) then |
ALU_OUT <= not(OP_A and OP_B); |
ALU_OUT <= not(OP_A and OP_B); -- STORM_OP: NOT |
else |
ALU_OUT <= not OP_B; -- ARM_OP: MVN |
end if; |
231,12 → 231,18
FLAG_O(1) <= is_xor_zero_v; |
FLAG_O(2) <= OP_A(31) xor OP_B(31); |
FLAG_O(3) <= MS_OVFL_REG; |
-- Arithmetical Operations & Compares -- |
when others => |
FLAG_O(0) <= CARRY_OUT; |
-- Arithmetical Sub Operations & Compare -- |
when A_SUB | A_RSB | A_SBC | A_RSC | A_CMP => |
FLAG_O(0) <= not CARRY_OUT; -- borrow flag |
FLAG_O(1) <= is_add_zero_v; |
FLAG_O(2) <= ADDER_RES(31); |
FLAG_O(3) <= MS_OVFL_REG or OVFL_OUT; --(ADDER_RES(31) and (OP_A(31) xnor OP_B(31))) or MS_OVFL_REG |
-- Arithmetical Add Operations & Compare -- |
when others => -- A_ADD | A_ADC | A_CMN |
FLAG_O(0) <= CARRY_OUT; -- carry flag |
FLAG_O(1) <= is_add_zero_v; |
FLAG_O(2) <= ADDER_RES(31); |
FLAG_O(3) <= MS_OVFL_REG or OVFL_OUT; --(ADDER_RES(31) and (OP_A(31) xnor OP_B(31))) or MS_OVFL_REG |
end case; |
end process ALU_FLAG_LOGIC; |
|
/storm_core/trunk/rtl/STORM_TOP.vhd
37,10 → 37,10
-- ## System Architecture Configuration ## |
-- ############################################################################################### |
|
I_CACHE_PAGES : natural := 4; -- number of pages in I cache |
I_CACHE_PAGES : natural := 8; -- number of pages in I cache |
I_CACHE_PAGE_SIZE : natural := 32; -- page size in I cache |
D_CACHE_PAGES : natural := 8; -- number of pages in D cache |
D_CACHE_PAGE_SIZE : natural := 1; -- page size in D cache |
D_CACHE_PAGE_SIZE : natural := 32; -- page size in D cache |
BOOT_VECTOR : STD_LOGIC_VECTOR(31 downto 0) := x"00000000"; -- boot address |
IO_UC_BEGIN : STD_LOGIC_VECTOR(31 downto 0) := x"00000000"; -- io begin address |
IO_UC_END : STD_LOGIC_VECTOR(31 downto 0) := x"00000000" -- io end address |