diff --git a/lib/CPUs/JCpu/asm/opc.list b/lib/CPUs/JCpu/asm/opc.list
new file mode 100644
index 0000000..47635a8
--- /dev/null
+++ b/lib/CPUs/JCpu/asm/opc.list
@@ -0,0 +1,64 @@
+0 NOP         
+1 HALT        
+2 MOV|R|R     
+3 MOV|R|K     
+4 MOVX|R|Ri   
+5 MOVX|R|Ki   
+6 MOVX|Ri|R   
+7 MOVX|Ri|K   
+8 MOVX|Ki|R   
+9 MOVC|R|Ri   
+10 MOVC|R|Ki   
+11 MOVC|Ri|R   
+12 MOVC|Ri|K   
+13 MOVC|Ki|R   
+14 CMP|R|R     
+15 CMP|R|K     
+16 ADD|R|R     
+17 ADD|R|K     
+18 ADDC|R|R    
+19 ADDC|R|K    
+20 SUB|R|R     
+21 SUB|R|K     
+22 SUBC|R|R    
+23 SUBC|R|K    
+24 AND|R|R     
+25 AND|R|K     
+26 OR|R|R      
+27 OR|R|K      
+28 XOR|R|R     
+29 XOR|R|K     
+30 SHL|R       
+31 SHR|R       
+32 ROL|R       
+33 ROR|R       
+34 ROLC|R      
+35 RORC|R      
+36 XOUT|Ki|R   
+37 XOUT|Ri|K   
+38 COUT|Ki|R   
+39 COUT|Ri|K   
+40 XIN|R|Ki    
+41 CIN|R|Ki    
+42 SWAP|R      
+43 SETC        
+44 UNDEF       
+45 UNDEF       
+46 SUB|K|R     
+47 SUBC|K|R    
+48 JMP|K       
+49 JZ|K        
+50 JNZ|K       
+51 JC|K        
+52 JNC|K       
+53 JLT|K       
+54 JGT|K       
+55 JLE|K       
+56 JGE|K       
+57 JEQ|K       
+58 JNE|K       
+59 CALL|K      
+60 PUSH|R      
+61 POP|R       
+62 RET         
+63 RETI