first commit

Author: 2xic

.gitignore

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+*.pyc

README.md

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+Basic GB emulator based of https://github.com/trekawek/coffee-gb (used as reference) and http://marc.rawer.de/Gameboy/Docs/GBCPUman.pdf
+
+[http://blog.rekawek.eu/2017/02/09/coffee-gb/](http://blog.rekawek.eu/2017/02/09/coffee-gb/)
+
+Uses
+- sdl2 and sdl2mixer
+  - pysdl2
+  - `sudo apt-get install -y libsdl2-mixer-2.0-0`
+- use `pypy` sicne python c is slow

cartridge.py

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+
+
+
+class cartridgeTypes:
+	types = {
+				"ROM ": 0x00,
+				"ROM_MBC1 ": 0x01,
+				"ROM_MBC1_RAM ": 0x02,
+				"ROM_MBC1_RAM_BATTERY ": 0x03,
+				"ROM_MBC2 ": 0x05,
+				"ROM_MBC2_BATTERY ": 0x06,
+				"ROM_RAM ": 0x08,
+				"ROM_RAM_BATTERY ": 0x09,
+				"ROM_MMM01 ": 0x0b,
+				"ROM_MMM01_SRAM ": 0x0c,
+				"ROM_MMM01_SRAM_BATTERY ": 0x0d,
+				"ROM_MBC3_TIMER_BATTERY ": 0x0f,
+				"ROM_MBC3_TIMER_RAM_BATTERY ": 0x10,
+				"ROM_MBC3 ": 0x11,
+				"ROM_MBC3_RAM ": 0x12,
+				"ROM_MBC3_RAM_BATTERY ": 0x13,
+				"ROM_MBC5 ": 0x19,
+				"ROM_MBC5_RAM ": 0x1a,
+				"ROM_MBC5_RAM_BATTERY ": 0x01b,
+				"ROM_MBC5_RUMBLE ": 0x1c,
+				"ROM_MBC5_RUMBLE_SRAM ": 0x1d,
+				"ROM_MBC5_RUMBLE_SRAM_BATTERY ": 0x1e
+			}
+	gotID = None
+	def getById(self, Typeid):
+		self.gotID = self.types.keys()[self.types.values().index(Typeid)]
+		return self.gotID
+
+	def isType(self, typeName):
+		return  typeName in self.types.keys()[self.types.values().index(Typeid)]
+
+	def getRomBanks(self, romid):
+		if(romid == 0):
+			return 2
+		elif(romid == 1):
+			return 4
+		elif(romid == 2):
+			return 8
+		elif(romid == 3):
+			return 16
+		elif(romid == 4):
+			return 32
+		elif(romid == 5):
+			return 64
+		elif(romid == 6):
+			return 128
+		elif(romid == 0x52):
+			return 72
+		elif(romid == 0x53):
+			return 80
+		elif(romid == 0x54):
+			return 96	
+		else:
+			raise Exception("Bug . defiently")
+
+	def getRamBanks(self, ramid):
+		if(ramid == 0):
+			return 0
+		elif(ramid == 1):
+			return 1
+		elif(ramid == 2):
+			return 1
+		elif(ramid == 3):
+			return 4
+		elif(ramid == 4):
+			return 16
+		else:
+			raise Exception("Bug defiently")
+
+
+
+
+
+
+

controllers.py

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+
+
+
+
+class buttons:
+		avaible = {
+			"RIGHT":(0x01, 0x10), 
+			"LEFT" : (0x02, 0x10), 
+			"UP" : (0x04, 0x10), 
+			"DOWN" : (0x08, 0x10),
+			"A" : (0x01, 0x20), 
+			"B" : (0x02, 0x20), 
+			"SELECT" : (0x04, 0x20), 
+			"START" : (0x08, 0x20)
+		}
+
+
+		line = 0
+		mask = 0
+
+
+		def __init__(self):
+			pass
+
+		def getMask(self):
+			return self.mask
+
+		def getLine(self):
+			return self.line
+
+class joycontrollers:
+	def __init__(self, interruptManager):
+		self.interruptManager = interruptManager
+		self.activeButtons = {}
+		self.p1 = 0
+
+		self.buttonids = buttons()
+
+	def buttonPress(self, buttonID):
+		self.interruptManager.requestInterrupt(self.interruptManager.get("P10_13"))
+		self.activeButtons[buttonID] = self.buttonids.avaible[buttonID]
+
+	def buttonUnPress(self, buttonID):
+		self.activeButtons.pop(buttonID, None)
+
+	
+
+	def setByte(self, address, value):
+		self.p1 = value & 0b00110000;
+
+	def getByte(self, address):
+		result = self.p1 | 0b00001111;
+		for buttonid, buttonvalue  in self.activeButtons.items():
+			if ((buttonvalue[1] & self.p1) == 0):
+				result &=  0xff & ~buttonvalue[0]
+		#print(result)
+		#print("happy")
+		return result
+
+
+
+
+
+
+

counter.py

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+
+
+class Counter:
+	frequency = 0
+	counter = 0
+	clocks = 0
+
+	def __init__(self, frequency):
+		self.frequency = frequency
+
+	def tick(self):
+		self.clocks += 1
+		if (self.clocks == 4194304 / self.frequency):
+			self.clocks = 0
+			self.counter = (self.counter + 1) & 0xff
+			return True
+		else:
+			return False
+
+	def getCounter(self):
+		return self.counter
+
+	def resetCounter(self):
+		self.counter = 0
+
+	def setCounter(self, counter):
+		self.counter = counter
+
+