Add source code

1 files changed, 66 insertions, 0 deletions

diff --git a/components/ram.py b/components/ram.py
new file mode 100644
index 0000000..c6d05bb
--- /dev/null
+++ b/components/ram.py
@@ -0,0 +1,66 @@
+from components.ijvm import ijvm
+
+class Ram:
+	
+	def __init__(self,components,size):
+		self.data=dict()
+		self.lastAddr=size-1
+		self.c=components
+	
+	def loadRamFile(self,filepath):
+		data=dict()
+		addr=0
+		f=open(filepath,"r")
+		for line in f.readlines():
+			line=line.rstrip() # remove \n
+			if line in ijvm:
+				data[addr]=int(ijvm[line])
+			else:
+				data[addr]=int(line,0)
+			addr+=1
+		f.close()
+		self.data=data
+	
+	def write(self):
+		addr=self.c["MAR"]
+		if addr>self.lastAddr:
+			raise ValueError("You get out of the ram by trying to set a value at address {}, max address is {}".format(addr,self.lastAddr))
+		self.data[addr]=self.c["MDR"]
+	
+	def read(self):
+		addr=self.c["MAR"]
+		value=None
+		try:
+			value=self.data[addr]
+		except:
+			if addr>self.lastAddr:
+				raise ValueError("You get out of the ram by trying to get value at address {}, max address is {}".format(addr,self.lastAddr))
+		if(value==None):
+			return(0)
+		return(value)
+		
+	def fetch(self):
+		addr=self.c["PC"]
+		value=None
+		try:
+			value=self.data[addr]
+		except:
+			if addr>self.lastAddr:
+				raise ValueError("You get out of the ram by trying to get value at address {}, max address is {}".format(addr,self.lastAddr))
+		if(value==None):
+			return(0)
+		return(value)
+		
+	def dump(self):
+		print("------- RAM --------")
+		for key,value in self.data.items():
+			#print("{}:{}".format(key,bin(value)[2:]))
+			print("{}:{}".format(key,value))
+		print("--------------------")
+		
+	def dump(self,start,end):
+		for i in range(start,end+1):
+			try:
+				print("{}:{}".format(i,self.data[i]))
+			except:
+				print("{}:0".format(i))