Add opcodes

components/caretaker.py

@@ -9,7 +9,14 @@ class Caretaker:
 			self.objects[reg]=0
 		self.objects["RAM"]=None
 	
-	def __getitem__(self,key): # TODO: Allow MBRU key and adapt its return value
+	def __getitem__(self,key):
+		if key=="MBRU": # If we ask for unsigned
+			return(self.objects["MBR"] & 0x000000FF)
+		elif key=="MBR": # If we ask for signed
+			if self.objects["MBR"]>=0:
+				return(self["MBRU"])
+			else: # Send 2 complement if it's lower than 0
+				return(self.objects["MBR"] & 0xFFFFFFFF)
 		return(self.objects[key])
 
 	def __setitem__(self,key,value):# TODO: Do special treatment for MBR (allow only 2^8 value)

components/microprogram.py

@@ -86,7 +86,7 @@ class Microprogram:
 			self.c["MAR"]=self.c["SP"]
 			self.c["H"]=self.c["TOS"]
 			self.rd()
-			self.c["TOS"]=(self.c["MDR"] and self.c["H"])
+			self.c["TOS"]=(self.c["MDR"] & self.c["H"])
 			self.c["MDR"]=self.c["TOS"]
 			self.wr()
 		elif opcode==ijvm["IOR"]:
@@ -94,7 +94,7 @@ class Microprogram:
 			self.c["MAR"]=self.c["SP"]
 			self.c["H"]=self.c["TOS"]
 			self.rd()
-			self.c["TOS"]=(self.c["MDR"] or self.c["H"])
+			self.c["TOS"]=(self.c["MDR"] | self.c["H"])
 			self.c["MDR"]=self.c["TOS"]
 			self.wr()
 		elif opcode==ijvm["SWAP"]:
@@ -107,6 +107,34 @@ class Microprogram:
 			self.c["MAR"]=self.c["SP"]-1
 			self.wr()
 			self.c["TOS"]=self.c["H"]
+		elif opcode==ijvm["ILOAD"]:
+			self.fetch();self.c["PC"]+=1 # Fetch local variable  to push onto the stack
+			self.c["H"]=self.c["LV"]
+			self.c["MAR"]=self.c["MBRU"]+self.c["H"]
+			self.rd()
+			self.c["SP"]+=1
+			self.c["MAR"]=self.c["SP"]
+			self.wr()
+			self.c["TOS"]=self.c["MDR"]
+		elif opcode==ijvm["ISTORE"]:
+			self.fetch();self.c["PC"]+=1 # Fetch local variable offset where to store
+			self.c["H"]=self.c["LV"]
+			self.c["MAR"]=self.c["MBRU"]+self.c["H"]
+			self.c["MDR"]=self.c["TOS"]
+			self.wr()
+			self.c["SP"]-=1
+			self.c["MAR"]=self.c["SP"]
+			self.rd()
+			self.c["TOS"]=self.c["MDR"]
+		elif opcode==ijvm["IINC"]:
+			self.fetch();self.c["PC"]+=1 # Fetch local variable offset to inc
+			self.c["H"]=self.c["LV"]
+			self.c["MAR"]=self.c["MBRU"]+self.c["H"]
+			self.rd()
+			self.fetch();self.c["PC"]+=1 # Fetch inc value
+			self.c["H"]=self.c["MDR"]
+			self.c["MDR"]=self.c["MBR"]+self.c["H"]
+			self.wr()
 		elif opcode==ijvm["OUT"]:
 			self.fetch();self.c["PC"]+=1 # Fetch byte to push in MBR
 			print(str(chr(self.c["MBR"])),end="")

micsim.py

@@ -14,4 +14,6 @@ mic=Microprogram(c) 			# Create micro program
 mic.run() 						# Run the micro program
 mic.dump() 						# Dump ram
 
+c["MBR"]=-1
+print(c["MBR"])
 

ram.txt

@@ -1,11 +1,14 @@
 BIPUSH
+4
+BIPUSH
 5
+ILOAD
+0
 BIPUSH
 2
 IADD
-BIPUSH
+ISTORE
+1
+IINC
+1
 10
-POP
-HALT
-OUT
-65