[pypy-svn] r55035 - in pypy/dist/pypy/lang/gameboy: . test

cami at codespeak.net cami at codespeak.net
Tue May 20 19:58:19 CEST 2008


Author: cami
Date: Tue May 20 19:58:17 2008
New Revision: 55035

Added:
   pypy/dist/pypy/lang/gameboy/test/test_memory_bank_controller.py
Modified:
   pypy/dist/pypy/lang/gameboy/cartridge.py
   pypy/dist/pypy/lang/gameboy/cpu.py
   pypy/dist/pypy/lang/gameboy/gameboy.py
   pypy/dist/pypy/lang/gameboy/gameboyImplementation.py
   pypy/dist/pypy/lang/gameboy/test/test_rom.py
Log:
created memory bank controller
added debug prints for the cpu
fixed some variable bug in cartrdge


Modified: pypy/dist/pypy/lang/gameboy/cartridge.py
==============================================================================
--- pypy/dist/pypy/lang/gameboy/cartridge.py	(original)
+++ pypy/dist/pypy/lang/gameboy/cartridge.py	Tue May 20 19:58:17 2008
@@ -149,6 +149,7 @@
         return (checksum == self.get_header_checksum())
     
     def create_bank_controller(self, type, rom, ram, clock_driver):
+        print "create_bank_controller: ", type
         return MEMORY_BANK_MAPPING[type](rom, ram, clock_driver)
 
 
@@ -252,28 +253,28 @@
         self.set_ram(ram)
 
     def reset(self):
-        self.rom_bank = constants.ROM_BANK_SIZE
-        self.ram_bank = 0
+        self.rom_bank   = constants.ROM_BANK_SIZE
+        self.ram_bank   = 0
         self.ram_enable = False
-        self.rom = []
-        self.ram = []
-        self.rom_size = 0
-        self.ram_size = 0
+        self.rom        = []
+        self.ram        = []
+        self.rom_size   = 0
+        self.ram_size   = 0
     
     def set_rom(self, buffer):
-        banks = len(buffer) / constants.ROM_BANK_SIZE
+        banks = int(len(buffer) / constants.ROM_BANK_SIZE)
         if banks < self.min_rom_bank_size or banks > self.max_rom_bank_size:
-            raise Exception("Invalid constants.ROM size")
+            raise Exception("Invalid ROM size %s" % hex(len(buffer)))
         self.rom = buffer
-        self.rom_size = constants.ROM_BANK_SIZE*banks - 1
+        self.rom_size = constants.ROM_BANK_SIZE * banks - 1
 
 
     def set_ram(self, buffer):
-        banks = len(buffer) / constants.RAM_BANK_SIZE
+        banks = int(len(buffer) / constants.RAM_BANK_SIZE)
         if banks < self.min_ram_bank_size or banks > self.max_ram_bank_size:
-            raise Exception("Invalid constants.RAM size")
+            raise Exception("Invalid RAM size %s" % hex(len(buffer)))
         self.ram = buffer
-        self.ram_size = constants.RAM_BANK_SIZE*banks - 1
+        self.ram_size = constants.RAM_BANK_SIZE * banks - 1
         
         
     def read(self, address):    
@@ -286,7 +287,7 @@
         raise Exception("MBC: Invalid address, out of range")
     
     def write(self, address, data):
-        pass
+        raise Exception("MBC: Invalid write access")
   
 
 #-------------------------------------------------------------------------------
@@ -337,10 +338,13 @@
             self.memory_model = data & 0x01
         elif address >= 0xA000 and address <= 0xBFFF and self.ram_enable: # A000-BFFF
             self.ram[self.ram_bank + (address & 0x1FFF)] = data
+        else:
+            raise Exception("Invalid memory Access")
 
     def write_ram_enable(self, address, data):
         if self.ram_size > 0:
             self.ram_enable = ((data & 0x0A) == 0x0A)
+        print "write_ram_enable: ", hex(self.ram_enable)
     
     def write_rom_bank_1(self, address, data):
         if (data & 0x1F) == 0:

Modified: pypy/dist/pypy/lang/gameboy/cpu.py
==============================================================================
--- pypy/dist/pypy/lang/gameboy/cpu.py	(original)
+++ pypy/dist/pypy/lang/gameboy/cpu.py	Tue May 20 19:58:17 2008
@@ -355,9 +355,13 @@
 
     def fetch_execute(self):
         # Execution
-        FETCH_EXECUTE_OP_CODES[self.fetch()](self)
+        opCode = self.fetch()
+        print "    fetch exe:", hex(opCode)
+        FETCH_EXECUTE_OP_CODES[opCode](self)
         
     def execute(self, opCode):
+        print "-"*60
+        print "exe: ", hex(opCode), "|", hex(self.pc.get()), hex(self.sp.get())
         OP_CODES[opCode](self)
         
     def read(self, hi, lo=None):
@@ -369,6 +373,7 @@
         return self.memory.read(address)
 
     def write(self, address, data):
+        print "    write: ", "a:", hex(address), "v:", hex(data)
         # 2 cycles
         self.memory.write(address, data)
         self.cycles -= 2
@@ -381,6 +386,7 @@
         else:
             data = self.memory.read(self.pc.get(use_cycles))
         self.pc.inc(use_cycles) # 2 cycles
+        print "    fetch: ", data
         return data
     
     def fetch_double_address(self):

Modified: pypy/dist/pypy/lang/gameboy/gameboy.py
==============================================================================
--- pypy/dist/pypy/lang/gameboy/gameboy.py	(original)
+++ pypy/dist/pypy/lang/gameboy/gameboy.py	Tue May 20 19:58:17 2008
@@ -93,6 +93,8 @@
             self.video.emulate(count)
             self.sound.emulate(count)
             self.joypad.emulate(count)
+            if count == 0:
+                break
             ticks -= count
         return 0
 
@@ -108,32 +110,48 @@
             raise Exception("invalid read address given")
         return receiver.read(address)
 
+    def print_receiver_msg(self, address, name):
+            print "    mem.receiver ", hex(address), name
+            
     def get_receiver(self, address):
         if 0x0000 <= address <= 0x7FFF:
+            self.print_receiver_msg(address, "memoryBank")
             return self.cartridge_manager.get_memory_bank()
         elif 0x8000 <= address <= 0x9FFF:
+            self.print_receiver_msg(address, "video")
             return self.video
         elif 0xA000 <= address <= 0xBFFF:
+            self.print_receiver_msg(address, "memoryBank")
             return self.cartridge_manager.get_memory_bank()
         elif 0xC000 <= address <= 0xFDFF:
+            self.print_receiver_msg(address, "ram")
             return self.ram
         elif 0xFE00 <= address <= 0xFEFF:
+            self.print_receiver_msg(address, "video")
             return self.video
         elif 0xFF00 <= address <= 0xFF00:
+            self.print_receiver_msg(address, "joypad")
             return self.joypad
         elif 0xFF01 <= address <= 0xFF02:
+            self.print_receiver_msg(address, "serial")
             return self.serial
         elif 0xFF04 <= address <= 0xFF07:
+            self.print_receiver_msg(address, "timer")
             return self.timer
         elif 0xFF0F <= address <= 0xFF0F:
+            self.print_receiver_msg(address, "interrupt")
             return self.interrupt
         elif 0xFF10 <= address <= 0xFF3F:
+            self.print_receiver_msg(address, "sound")
             return self.sound
         elif 0xFF40 <= address <= 0xFF4B:
+            self.print_receiver_msg(address, "video")
             return self.video
         elif 0xFF80 <= address <= 0xFFFE:
+            self.print_receiver_msg(address, "ram")
             return self.ram
         elif 0xFFFF <= address <= 0xFFFF:
+            self.print_receiver_msg(address, "interrupt")
             return self.interrupt
 
     def draw_logo(self):

Modified: pypy/dist/pypy/lang/gameboy/gameboyImplementation.py
==============================================================================
--- pypy/dist/pypy/lang/gameboy/gameboyImplementation.py	(original)
+++ pypy/dist/pypy/lang/gameboy/gameboyImplementation.py	Tue May 20 19:58:17 2008
@@ -1,5 +1,4 @@
 #!/usr/bin/env python 
-import time
         
 from pypy.lang.gameboy.gameboy import GameBoy
 from pypy.lang.gameboy.joypad import JoypadDriver
@@ -9,7 +8,7 @@
 from pypy.rlib.rsdl import RSDL, RSDL_helper
 from pypy.rpython.lltypesystem import lltype, rffi
 from pypy.rlib.objectmodel import specialize
-
+import py
 
 # GAMEBOY ----------------------------------------------------------------------
 
@@ -18,7 +17,6 @@
     def __init__(self):
         GameBoy.__init__(self)
         self.init_sdl()
-        self.mainLoop()
         
     def init_sdl(self):
         assert RSDL.Init(RSDL.INIT_VIDEO) >= 0
@@ -38,8 +36,8 @@
                     if self.check_for_escape():
                         break
                     self.joypad_driver.update(self.event) 
-                #self.emulate(5)
-                #time.sleep(0.01)
+                self.emulate(10)
+                RSDL.Delay(10)
         finally:
             lltype.free(self.event, flavor='raw')
             RSDL.Quit()
@@ -117,10 +115,12 @@
         p = rffi.cast(RSDL.KeyboardEventPtr, event)
         self.last_key = rffi.getintfield(p.c_keysym, 'c_sym')
         
-    def on_key_down(self): 
+    def on_key_down(self):
+        print "press"
         self.toggleButton(self.get_button_handler(self.last_key), True)
     
     def on_key_up(self): 
+        print "release"
         self.toggleButton(self.get_button_handler(self.last_key), False)
     
     def toggleButton(self, pressButtonFunction, enabled):
@@ -128,22 +128,29 @@
             pressButtonFunction(self, enabled)
     
     def get_button_handler(self, key):
-        print "get_button_handler: ", key
         if key == RSDL.K_UP:
+            print "    up"
             return JoypadDriver.button_up
         elif key == RSDL.K_RIGHT: 
+            print "    right"
             return JoypadDriver.button_right
         elif key == RSDL.K_DOWN:
+            print "    down"
             return JoypadDriver.button_down
         elif key == RSDL.K_LEFT:
+            print "    left"
             return JoypadDriver.button_left
         elif key == RSDL.K_RETURN:
+            print "    start"
             return JoypadDriver.button_start
         elif key == RSDL.K_SPACE:
+            print "    select"
             return JoypadDriver.button_select
         elif key == RSDL.K_a:
+            print "    A"
             return JoypadDriver.button_a
         elif key == RSDL.K_b:
+            print "    B"
             return JoypadDriver.button_b
         return None
         
@@ -175,11 +182,20 @@
     
 # ==============================================================================
 
-def entry_point(args=None):
+ROM_PATH = str(py.magic.autopath().dirpath().dirpath().dirpath())+"/lang/gameboy/rom"
+import pdb
+
+def entry_point(argv=None):
+    print "startin gameboy emulation"
     gameboy = GameBoyImplementation()
-    if args is None:
-        gameboy.load()
-    # add return statement...
+    if argv is not None and len(argv) > 1:
+        filename = argv[1]
+    else:
+        #filename = gameboy.load()
+        filename = ROM_PATH+"/rom9/rom9.gb"
+    print "loading rom: ", str(filename)
+    gameboy.load_cartridge_file(str(filename))
+    pdb.runcall(gameboy.mainLoop)
     return 0
 
 
@@ -188,5 +204,9 @@
 def target(*args):
     return entry_point, None
 
-if __name__ == '__main__':
-    entry_point()
\ No newline at end of file
+def test_target():
+    entry_point()
+    
+
+    
+    
\ No newline at end of file

Added: pypy/dist/pypy/lang/gameboy/test/test_memory_bank_controller.py
==============================================================================
--- (empty file)
+++ pypy/dist/pypy/lang/gameboy/test/test_memory_bank_controller.py	Tue May 20 19:58:17 2008
@@ -0,0 +1,105 @@
+
+from pypy.lang.gameboy.cartridge import *
+from pypy.lang.gameboy.timer import Clock
+from pypy.lang.gameboy.constants import *
+import py
+
+def get_clock_driver():
+    return Clock()
+
+RAM_SIZE = 3
+ROM_SIZE = 2
+
+def get_ram():
+    return [0] * RAM_SIZE * constants.RAM_BANK_SIZE
+
+def get_rom():
+    return [0xFF] * ROM_SIZE * constants.ROM_BANK_SIZE
+
+
+def test_mbc_init():
+    try:
+        MBC(get_ram(), get_rom(), get_clock_driver())
+        py.test.fail("")
+    except:
+        pass
+
+    try:
+        MBC(get_ram(), get_rom(), get_clock_driver(), 0, ROM_SIZE-1, 0,
+            RAM_SIZE-1)
+        py.test.fail("")
+    except:
+        pass
+    
+    try:
+        MBC(get_ram(), get_rom(), get_clock_driver(), ROM_SIZE+1, ROM_SIZE+1, 
+            RAM_SIZE+1, RAM_SIZE+1)
+        py.test.fail("")
+    except:
+        pass
+
+def test_mbc():
+    py.test.skip()
+    mbc = MBC(get_ram(), get_rom(), get_clock_driver(),1, 0xF3, 2, 0xF1)
+    assert mbc.min_rom_bank_size == 1
+    assert mbc.max_rom_bank_size == 0xF3
+    assert mbc.min_ram_bank_size == 2
+    assert mbc.max_ram_bank_size == 0xF1
+    assert mbc.rom_bank == constants.ROM_BANK_SIZE
+    assert mbc.ram_bank == 0
+    assert mbc.ram_enable == False
+    assert mbc.rom_size == ROM_SIZE * constants.ROM_BANK_SIZE - 1
+    assert mbc.ram_size == RAM_SIZE * constants.ROM_BANK_SIZE - 1
+    assert len(mbc.rom) == ROM_SIZE
+    assert len(mbc.ram) == RAM_SIZE
+    
+
+def test_mbc_read_write():
+    mbc = MBC([0]*0xFFFF,[0]*0xFFFF, get_clock_driver(),1, 0xFFFF, 2, 0xFFFF)
+    try:
+        mbc.write(0, 0)
+        py.test.fail(" MBC has an abstract write")
+    except:
+        pass
+    
+    try:
+        mbc.read(0x1FFFF+1)
+        py.test.fail(" write address to high")
+    except:
+        pass
+ 
+def test_mbc_read_write_test(mbc=None):  
+    if mbc==None:
+        mbc = MBC([0]*0xFFFF,[0]*0xFFFF, get_clock_driver(),1, 0xFFFF, 2, 0xFFFF)
+
+    value = 0x12
+    mbc.rom[0x3FFF] = value
+    assert mbc.read(0x3FFF) == value
+    
+    mbc.rom[mbc.rom_bank] = value
+    assert mbc.read(0x4000) == value
+    
+    
+    mbc.ram[mbc.ram_bank] = value
+    mbc.ram_enable = False
+    try:
+        mbc.read(0xA000)
+        py.test.fail("ram is not enabled")
+    except:
+        pass
+    mbc.ram_enable = True
+    assert mbc.read(0xA000) == value
+    
+    
+
+def test_mbc1_write():  
+    py.test.skip("buggy implementation of MBC1++")
+    mbc1 = MBC1([0]*0x5FFF,[0]*0xBFFF, get_clock_driver())
+    test_mbc_read_write_test(mbc1)
+
+    
+    
+
+    
+    
+    
\ No newline at end of file

Modified: pypy/dist/pypy/lang/gameboy/test/test_rom.py
==============================================================================
--- pypy/dist/pypy/lang/gameboy/test/test_rom.py	(original)
+++ pypy/dist/pypy/lang/gameboy/test/test_rom.py	Tue May 20 19:58:17 2008
@@ -62,6 +62,7 @@
     
     
 def test_rom7():
+    py.test.skip("Current Default ROM Implemenation doesnt allow write")
     gameBoy = GameBoy()
     gameBoy.load_cartridge_file(ROM_PATH+"/rom7/rom7.gb")
     gameBoy.emulate(EMULATION_CYCLES)



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