6502/py65
1
0
Fork 0
mirror of https://github.com/mnaberez/py65.git synced 2024-09-06 10:54:32 +00:00
Code Issues Projects Releases Wiki Activity

Added WAI operation

Browse Source 
Signed-off-by: Mike Naberezny <mike@naberezny.com>
This commit is contained in:
Oscar Lindberg 2009-04-13 08:59:58 +08:00 committed by Mike Naberezny
parent cba7990d29
commit af11a3722a
1 changed files with 20 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
src/py65/devices/mpu65c02.py
View File

@ -1,15 +1,24 @@
from py65.devices.mpu6502 import MPU as NMOS6502
from py65.devices import mpu6502
from py65.utils.devices import make_instruction_decorator
class MPU(NMOS6502):
class MPU(mpu6502.MPU):
def __init__(self, *args, **kwargs):
NMOS6502.__init__(self, *args, **kwargs)
mpu6502.MPU.__init__(self, *args, **kwargs)
self.name = '65C02'
self.waiting = False
instruct = NMOS6502.instruct[:]
cycletime = NMOS6502.cycletime[:]
extracycles = NMOS6502.extracycles[:]
disassemble = NMOS6502.disassemble[:]
def step(self):
if self.waiting:
self.processorCycles += 1
else:
mpu6502.MPU.step(self)
return self
# Make copies of the lists
instruct = mpu6502.MPU.instruct[:]
cycletime = mpu6502.MPU.cycletime[:]
extracycles = mpu6502.MPU.extracycles[:]
disassemble = mpu6502.MPU.disassemble[:]
instruction = make_instruction_decorator(instruct, disassemble,
cycletime, extracycles)
@ -243,6 +252,10 @@ class MPU(NMOS6502):
def inst_0x80(self):
self.BranchRelAddr()
@instruction(name="WAI", mode='imp', cycles=3)
def inst_0xCB(self):
self.waiting = True
@instruction(name="SBC", mode="zpi", cycles=5)
def inst_0xf2(self):
self.opSBC(self.ZeroPageIndirectAddr)