diff --git a/src/frontend/decoder/thumb1.h b/src/frontend/decoder/thumb1.h
index d5c30ed7..76039d2b 100644
--- a/src/frontend/decoder/thumb1.h
+++ b/src/frontend/decoder/thumb1.h
@@ -56,7 +56,7 @@ private:
 };
 
 template <typename V>
-static const std::array<Thumb1Matcher<V>, 18> g_thumb1_instruction_table {{
+static const std::array<Thumb1Matcher<V>, 19> g_thumb1_instruction_table {{
 
 #define INST(fn, name, bitstring) detail::detail<Thumb1Matcher, u16, 16>::GetMatcher<decltype(fn), fn>(name, bitstring)
 
@@ -79,7 +79,7 @@ static const std::array<Thumb1Matcher<V>, 18> g_thumb1_instruction_table {{
     { INST(&V::thumb1_LSL_reg,        "LSL (reg)",                "0100000010mmmddd") },
     { INST(&V::thumb1_LSR_reg,        "LSR (reg)",                "0100000011mmmddd") },
     { INST(&V::thumb1_ASR_reg,        "ASR (reg)",                "0100000100mmmddd") },
-    //{ INST(&V::thumb1_ADCS_rr,        "ADCS (rr)",                "0100000101mmmddd") },
+    { INST(&V::thumb1_ADC_reg,        "ADC (reg)",                "0100000101mmmddd") },
     //{ INST(&V::thumb1_SBCS_rr,        "SBCS (rr)",                "0100000110mmmddd") },
     //{ INST(&V::thumb1_RORS_rr,        "RORS (rr)",                "0100000111sssddd") },
     //{ INST(&V::thumb1_TST_rr,         "TST (rr)",                 "0100001000mmmnnn") },
diff --git a/src/frontend/disassembler_thumb.cpp b/src/frontend/disassembler_thumb.cpp
index 032f4e31..c39aef55 100644
--- a/src/frontend/disassembler_thumb.cpp
+++ b/src/frontend/disassembler_thumb.cpp
@@ -166,6 +166,10 @@ public:
         return Common::StringFromFormat("asrs %s, %s", RegStr(d_n), RegStr(m));
     }
 
+    std::string thumb1_ADC_reg(Reg m, Reg d_n) {
+        return Common::StringFromFormat("adcs %s, %s", RegStr(d_n), RegStr(m));
+    }
+
     std::string thumb1_ADD_reg_t2(bool d_n_hi, Reg m, Reg d_n_lo) {
         Reg d_n = d_n_hi ? (d_n_lo + 8) : d_n_lo;
         return Common::StringFromFormat("add %s, %s", RegStr(d_n), RegStr(m));
diff --git a/src/frontend/translate_thumb.cpp b/src/frontend/translate_thumb.cpp
index 38974815..a87e114f 100644
--- a/src/frontend/translate_thumb.cpp
+++ b/src/frontend/translate_thumb.cpp
@@ -213,6 +213,19 @@ struct TranslatorVisitor final {
         ir.SetCFlag(result.carry);
         return true;
     }
+    bool thumb1_ADC_reg(Reg m, Reg d_n) {
+        Reg d = d_n, n = d_n;
+        // ADCS <Rdn>, <Rm>
+        // Note that it is not possible to encode Rd == R15.
+        auto aspr_c = ir.GetCFlag();
+        auto result = ir.AddWithCarry(ir.GetRegister(n), ir.GetRegister(m), aspr_c);
+        ir.SetRegister(d, result.result);
+        ir.SetNFlag(ir.MostSignificantBit(result.result));
+        ir.SetZFlag(ir.IsZero(result.result));
+        ir.SetCFlag(result.carry);
+        ir.SetVFlag(result.overflow);
+        return true;
+    }
 
     bool thumb1_ADD_reg_t2(bool d_n_hi, Reg m, Reg d_n_lo) {
         Reg d_n = d_n_hi ? (d_n_lo + 8) : d_n_lo;