X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=cpu%2Fsrc%2Falu_b.vhd;h=746fbc3489e85f38a74e287224d97e8e7f481b9d;hb=0ba0c7effbaf554ad42db51334581859a0570bfa;hp=c170ce6351bee19ccb8ed4b7e2b8a2c344188b6e;hpb=afedb369e2082b0e887941faa4326f3c11eff20d;p=calu.git

diff --git a/cpu/src/alu_b.vhd b/cpu/src/alu_b.vhd
index c170ce6..746fbc3 100755
--- a/cpu/src/alu_b.vhd
+++ b/cpu/src/alu_b.vhd
@@ -122,19 +122,19 @@ begin
 	case op_group is
 	when ADDSUB_OP =>
 		result_v := add_result;
-		addr(DATA_ADDR_WIDTH + 2) <= '0';
+		addr(DATA_ADDR_WIDTH + 3) <= '0';
 	when AND_OP =>
 		result_v := and_result;
-		addr(DATA_ADDR_WIDTH + 2) <= '0';
+		addr(DATA_ADDR_WIDTH + 3) <= '0';
 	when OR_OP =>
 		result_v := or_result;
-		addr(DATA_ADDR_WIDTH + 2) <= '0';
+		addr(DATA_ADDR_WIDTH + 3) <= '0';
 	when XOR_OP =>
 		result_v := xor_result;
-		addr(DATA_ADDR_WIDTH + 2) <= '0';
+		addr(DATA_ADDR_WIDTH + 3) <= '0';
 	when SHIFT_OP =>
 		result_v := shift_result;
-		addr(DATA_ADDR_WIDTH + 2) <= '0';
+		addr(DATA_ADDR_WIDTH + 3) <= '0';
    when LDST_OP =>
                 res_prod := '0';
                 mem_op := '1';
@@ -155,7 +155,7 @@ begin
 
                         res_prod := '1';
                         mem_op := '0';
-								addr(DATA_ADDR_WIDTH + 2) <= '0';
+								addr(DATA_ADDR_WIDTH + 3) <= '0';
                 end if;
                 if op_detail(ST_OPT) = '1' then
                         mem_en := '1';
@@ -188,15 +188,15 @@ begin
 		end if;
 	when STACK_OP =>
 		mem_op := '1';
-		pwr_en_v := '1';
+		pwr_en_v := op_detail(PWREN_OPT);
 		if op_detail(PUSH_OPT) = '1' then
 			mem_en := '1';
 			pinc_v := '1';
 			res_prod := '0';
-			addr <= pval_nxt;
+			addr <= pval;
 			data <= left_operand;
 		else
-			addr <= std_logic_vector(unsigned(pval_nxt)-4);
+			addr <= pval_nxt;
 		end if;
 		
 	end case;