diff --git a/target/e2k/helper.h b/target/e2k/helper.h
index ccc98784ec..e31911e174 100644
--- a/target/e2k/helper.h
+++ b/target/e2k/helper.h
@@ -17,6 +17,7 @@ DEF_HELPER_2(setwd, void, env, i32)
 DEF_HELPER_2(probe_read_access, int, env, tl)
 DEF_HELPER_2(probe_write_access, int, env, tl)
 DEF_HELPER_3(packed_shuffle_i64, i64, i64, i64, i64)
+DEF_HELPER_2(pcmpeqb, i64, i64, i64)
 DEF_HELPER_4(set_aad_i64, void, env, i64, int, int)
 DEF_HELPER_4(set_aad_i32, void, env, i32, int, int)
 DEF_HELPER_3(set_aasti_i64, void, env, i64, int)
diff --git a/target/e2k/helper_vec.c b/target/e2k/helper_vec.c
index 7700db564f..0523dc4e0c 100644
--- a/target/e2k/helper_vec.c
+++ b/target/e2k/helper_vec.c
@@ -87,3 +87,23 @@ uint64_t HELPER(packed_shuffle_i64)(uint64_t src1, uint64_t src2, uint64_t src3)
 
     return ret.n;
 }
+
+// FIXME: not tested
+uint64_t HELPER(pcmpeqb)(uint64_t src1, uint64_t src2)
+{
+    unsigned int i;
+    u8x8 s1, s2, ret;
+
+    s1.n = src1;
+    s2.n = src2;
+
+    for (i = 0; i < 8; i++) {
+        if (s1.s[i] == s2.s[i]) {
+            ret.s[i] = 0xff;
+        } else {
+            ret.s[i] = 0;
+        }
+    }
+
+    return ret.n;
+}
diff --git a/target/e2k/translate/alc.c b/target/e2k/translate/alc.c
index 0441b52814..4029035e25 100644
--- a/target/e2k/translate/alc.c
+++ b/target/e2k/translate/alc.c
@@ -1600,6 +1600,13 @@ static void execute_ext_01(DisasContext *dc, int chan)
             e2k_tr_gen_exception(dc, E2K_EXCP_ILLOPC);
         }
         break;
+    case 0x18:
+        if (chan == 0 || chan == 3) {
+            gen_alopf1_i64(dc, chan, gen_helper_pcmpeqb);
+        } else {
+            e2k_tr_gen_exception(dc, E2K_EXCP_ILLOPC);
+        }
+        break;
     case 0x20:
         if (is_cmp_chan(chan)) {
             gen_alopf1_i32(dc, chan, tcg_gen_mul_i32); /* muls */