diff --git a/erlang/apps/sim/src/sim_boolean.erl b/erlang/apps/sim/src/sim_boolean.erl
index 86551c9..6740868 100644
--- a/erlang/apps/sim/src/sim_boolean.erl
+++ b/erlang/apps/sim/src/sim_boolean.erl
@@ -24,7 +24,8 @@
 
 -module(sim_boolean).
 
--export([ handle_SETZ/4
+-export([ handle_AND/4
+        , handle_SETZ/4
         , handle_SETZB/4
         , handle_SETZM/4
         ]).
@@ -63,6 +64,22 @@ handle_SETZB(Core, Mem, IR, EA) ->
                           fun(Core1, Mem1) -> handle_SETZB(Core1, Mem1, IR, EA) end)
   end.
 
+%% AND - And with AC
+
+-spec handle_AND(#core{}, sim_mem:mem(), IR :: word(), #ea{})
+      -> {#core{}, sim_mem:mem(), {ok, integer()} | {error, {module(), term()}}}.
+handle_AND(Core, Mem, IR, EA) ->
+  case sim_core:c(Core, Mem, EA) of
+    {ok, CE} ->
+      AC = IR band 8#17,
+      CA = sim_core:get_ac(Core, AC),
+      Word = CE band CA,
+      sim_core:next_pc(sim_core:set_ac(Core, AC, Word), Mem);
+    {error, Reason} ->
+      sim_core:page_fault(Core, Mem, ea_address(EA), read, Reason,
+                          fun(Core1, Mem1) -> handle_AND(Core1, Mem1, IR, EA) end)
+  end.
+
 %% Miscellaneous ===============================================================
 
 ea_address(#ea{section = Section, offset = Offset}) ->
diff --git a/erlang/apps/sim/src/sim_core.erl b/erlang/apps/sim/src/sim_core.erl
index e4beffd..e26fb42 100644
--- a/erlang/apps/sim/src/sim_core.erl
+++ b/erlang/apps/sim/src/sim_core.erl
@@ -257,6 +257,7 @@ dispatch(Core, Mem, IR, EA) ->
     8#401 -> sim_boolean:handle_SETZ(Core, Mem, IR, EA); % SETZI = SETZ
     8#402 -> sim_boolean:handle_SETZM(Core, Mem, IR, EA);
     8#403 -> sim_boolean:handle_SETZB(Core, Mem, IR, EA);
+    8#404 -> sim_boolean:handle_AND(Core, Mem, IR, EA);
     _ ->
       PC = (Core#core.pc_section bsl 18) bor Core#core.pc_offset,
       {Core, Mem, {error, {?MODULE, {dispatch, PC, IR, EA}}}}
diff --git a/erlang/apps/sim/test/sim_boolean_tests.erl b/erlang/apps/sim/test/sim_boolean_tests.erl
index 1633b72..940ccf1 100644
--- a/erlang/apps/sim/test/sim_boolean_tests.erl
+++ b/erlang/apps/sim/test/sim_boolean_tests.erl
@@ -47,6 +47,7 @@
 -define(OP_SETZI, 8#401).
 -define(OP_SETZM, 8#402).
 -define(OP_SETZB, 8#403).
+-define(OP_AND, 8#404).
 
 %% 2.4 Boolean Functions =======================================================
 
@@ -94,6 +95,19 @@ setzb_test() ->
          , {#ea{section = 1, offset = 1, islocal = false}, 0} % AC1 = 0
          ]).
 
+%% AND - And with AC
+
+and_test() ->
+  Prog =
+    [ {1, 8#100, ?INSN(?OP_MOVEI, 1, 0, 0, 8#707070)} % 1,,100/ MOVEI 1,707070
+    , {1, 8#101, ?INSN(?OP_AND, 1, 0, 0, 8#200)}      % 1,,101/ AND 1,200
+    , {1, 8#102, ?INSN_INVALID}                       % 1,,102/ <invalid>
+    , {1, 8#200, ?COMMA2(-1, 8#333333)}               % 1,,200/ -1,333333
+    ],
+  expect(Prog, [], {1, 8#102}, ?DEFAULT_FLAGS,
+         [ {#ea{section = 1, offset = 1, islocal = false}, 8#303030} % AC1 = 0,,303030
+         ]).
+
 %% Common code to run short sequences ==========================================
 
 expect(Prog, ACs, ExpectedPC, ExpectedFlags, ExpectedEs) ->