diff --git a/erlang/apps/sim/src/sim_boolean.erl b/erlang/apps/sim/src/sim_boolean.erl
index f926cb9..79afe7f 100644
--- a/erlang/apps/sim/src/sim_boolean.erl
+++ b/erlang/apps/sim/src/sim_boolean.erl
@@ -32,6 +32,7 @@
         , handle_ANDCAM/4
         , handle_ANDCM/4
         , handle_ANDCMI/4
+        , handle_ANDCMM/4
         , handle_ANDI/4
         , handle_ANDM/4
         , handle_SETMB/4
@@ -259,6 +260,20 @@ handle_ANDCMI(Core, Mem, IR, EA) ->
   Word = CA band bnot EA#ea.offset,
   sim_core:next_pc(sim_core:set_ac(Core, AC, Word), Mem).
 
+-spec handle_ANDCMM(#core{}, sim_mem:mem(), IR :: word(), #ea{})
+      -> {#core{}, sim_mem:mem(), {ok, integer()} | {error, {module(), term()}}}.
+handle_ANDCMM(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 = CA band bnot CE,
+      handle_ANDM_1(Core, Mem, EA, Word);
+    {error, Reason} ->
+      sim_core:page_fault(Core, Mem, ea_address(EA), read, Reason,
+                          fun(Core1, Mem1) -> handle_ANDCMM(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 097cd67..20512a4 100644
--- a/erlang/apps/sim/src/sim_core.erl
+++ b/erlang/apps/sim/src/sim_core.erl
@@ -271,6 +271,7 @@ dispatch(Core, Mem, IR, EA) ->
     8#417 -> sim_boolean:handle_SETMB(Core, Mem, IR, EA);
     8#420 -> sim_boolean:handle_ANDCM(Core, Mem, IR, EA);
     8#421 -> sim_boolean:handle_ANDCMI(Core, Mem, IR, EA);
+    8#422 -> sim_boolean:handle_ANDCMM(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 e7e3f49..618ef42 100644
--- a/erlang/apps/sim/test/sim_boolean_tests.erl
+++ b/erlang/apps/sim/test/sim_boolean_tests.erl
@@ -62,6 +62,7 @@
 -define(OP_SETMB, 8#417).
 -define(OP_ANDCM, 8#420).
 -define(OP_ANDCMI, 8#421).
+-define(OP_ANDCMM, 8#422).
 
 %% 2.4 Boolean Functions =======================================================
 
@@ -309,6 +310,17 @@ andcmi_test() ->
          [ {#ea{section = 1, offset = 1, islocal = false}, 8#030303} % AC1 = 0,,030303
          ]).
 
+andcmm_test() ->
+  Prog =
+    [ {1, 8#100, ?INSN(?OP_MOVEI, 1, 0, 0, 8#333333)} % 1,,100/ MOVEI 1,333333
+    , {1, 8#101, ?INSN(?OP_ANDCMM, 1, 0, 0, 8#200)}   % 1,,101/ ANDCMM 1,200
+    , {1, 8#102, ?INSN_INVALID}                       % 1,,102/ <invalid>
+    , {1, 8#200, ?COMMA2(0, 8#707070)}                % 1,,200/ 0,,707070
+    ],
+  expect(Prog, [], {1, 8#102}, ?DEFAULT_FLAGS,
+         [ {#ea{section = 1, offset = 8#200, islocal = false}, ?COMMA2(0, 8#030303)} % C(1,,200) = 0,,030303
+         ]).
+
 %% Common code to run short sequences ==========================================
 
 expect(Prog, ACs, ExpectedPC, ExpectedFlags, ExpectedEs) ->