diff --git a/rtl/isolde_decoder.sv b/rtl/isolde_decoder.sv
index 4365033c..3d50fb8e 100644
--- a/rtl/isolde_decoder.sv
+++ b/rtl/isolde_decoder.sv
@@ -103,6 +103,8 @@ module isolde_decoder
           read_ptr <= read_ptr + 1;
           case (isolde_opcode_q)
             isolde_opcode_vle32_4: load_quad_word();
+            isolde_opcode_gemm: decode_64b_gemm();
+
           endcase
         end
       endcase
@@ -156,4 +158,38 @@ module isolde_decoder
       end
     end
   endtask
+
+
+
+  task static decode_64b_gemm;
+    /**
+                            (v4i32 QPR:$rd2),  ( IntOp   (  iPTR  GPR:$rd1)
+                                                  ,(  iPTR     GPR:$rs1)
+                                                  ,(  v4i32    QPR:$rs4)
+                                                  ,(  iPTR     GPR:$rs2)
+                                                  ,(  v4i32    QPR:$rs5)
+                                                  ,(  iPTR     GPR:$rs3)
+                                                  ,(  i32       imm:$transA)
+                                                  ,(  i32       imm:$transB)                          
+                          )
+  **/
+    begin
+      if (3'h1 == read_ptr) begin
+        //first 32 bits
+        // isolde_rf_bus.wdata_0[3] <= isolde_decoder_instr_batch_i[1][24:20]; //rs2
+        // isolde_rf_bus.wdata_0[3] <= isolde_decoder_instr_batch_i[1][19:15]; //rs1
+        // isolde_rf_bus.wdata_0[3] <= isolde_decoder_instr_batch_i[1][14:12]; //funct3
+        // isolde_rf_bus.wdata_0[3] <= isolde_decoder_instr_batch_i[1][11:7]; //rd1             
+        // // extension 32 bits
+        // isolde_rf_bus.wdata_0[1] <= isolde_decoder_instr_batch_i[0][61:57]; //rs6
+        isolde_rf_bus.raddr_1 <= isolde_decoder_instr_batch_i[0][56:52];  //rs5
+        isolde_rf_bus.raddr_0 <= isolde_decoder_instr_batch_i[0][51:47];  //rs4
+        // isolde_rf_bus.wdata_0[1] <= isolde_decoder_instr_batch_i[0][46:44]; //_ext_funct3
+        // isolde_rf_bus.wdata_0[1] <= isolde_decoder_instr_batch_i[0][43:39]; //rd2  
+        isolde_decoder_exec_bus.funct2 <= isolde_decoder_instr_batch_i[0][38:37];  //_ext_funct2 
+        // isolde_rf_bus.wdata_0[1] <= isolde_decoder_instr_batch_i[0][36:32]; //rs3
+
+      end
+    end
+  endtask
 endmodule
diff --git a/rtl/isolde_exec_block.sv b/rtl/isolde_exec_block.sv
index ff6d5589..5d62f629 100644
--- a/rtl/isolde_exec_block.sv
+++ b/rtl/isolde_exec_block.sv
@@ -126,9 +126,17 @@ module isolde_exec_block
 `ifndef SYNTHESIS
     $fwrite(log_fh, " ---   %s\n", "isolde_exec_block::start_gemm");
     $fwrite(log_fh, "  func3=%b\n", isolde_exec_from_decoder.func3);
-    $fwrite(log_fh, "     rd=%d\n", isolde_exec_from_decoder.rd);
+    $fwrite(log_fh, "    rd1=%d\n", isolde_exec_from_decoder.rd);
     $fwrite(log_fh, "    rs1=%d\n", isolde_exec_from_decoder.rs1);
     $fwrite(log_fh, "    rs2=%d\n", isolde_exec_from_decoder.rs2);
+    $fwrite(log_fh, "    rs4=%d\n", isolde_rf_bus.raddr_0 );
+    $fwrite(log_fh, "     Q[%d] = [ %d, %d, %d, %d ]\n", isolde_rf_bus.raddr_0, isolde_rf_bus.rdata_0[0], isolde_rf_bus.rdata_0[1],  
+                                                                                isolde_rf_bus.rdata_0[2], isolde_rf_bus.rdata_0[3]);
+    $fwrite(log_fh, "    rs5=%d\n", isolde_rf_bus.raddr_1 );
+    $fwrite(log_fh, "     Q[%d] = [ %d, %d, %d, %d ]\n", isolde_rf_bus.raddr_1, isolde_rf_bus.rdata_1[0], isolde_rf_bus.rdata_1[1],  
+                                                                                isolde_rf_bus.rdata_1[2], isolde_rf_bus.rdata_1[3]);
+    $fwrite(log_fh, "  funct2=%b\n", isolde_exec_from_decoder.funct2 );                                                                                
+
 `endif
     begin
       cnt_max <= 4;  // wait cycles time for completion
diff --git a/rtl/isolde_fetch2exec_if.sv b/rtl/isolde_fetch2exec_if.sv
index d466dfb4..1af80f81 100644
--- a/rtl/isolde_fetch2exec_if.sv
+++ b/rtl/isolde_fetch2exec_if.sv
@@ -13,8 +13,9 @@ interface isolde_fetch2exec_if (
   //
   isolde_decoder_pkg::isolde_opcode_e isolde_opcode;  //decoded instruction
   logic [2:0] func3;  //instr[14-12]
-  logic [4:0] rd;  //register destination vector
-  logic [4:0] rs1;  //register source vector 
-  logic [4:0] rs2;  //register source vector 
-
+  logic [4:0] rd;  //register destination
+  logic [4:0] rs1;  //register source  
+  logic [4:0] rs2;  //register source 
+//
+  logic [1:0] funct2;  
 endinterface