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Revert "Revert "Add support for optionally tracing execution""
This reverts commit fab1174abb
.
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parent
fab1174abb
commit
8b9cf7db69
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@ -1,6 +1,6 @@
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from py65.utils.conversions import itoa
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from py65.utils.devices import make_instruction_decorator
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from py65 import disassembler
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class MPU:
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# vectors
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@ -41,6 +41,8 @@ class MPU:
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self.memory = memory
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self.start_pc = pc
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self.disassembler = disassembler.Disassembler(self)
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# init
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self.reset()
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@ -55,8 +57,11 @@ class MPU:
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return self.reprformat() % (indent, self.name, self.pc, self.a,
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self.x, self.y, self.sp, flags)
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def step(self):
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def step(self, trace=False):
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instructCode = self.memory[self.pc]
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if trace:
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print self, "$%04X: %s" % (
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self.pc, self.disassembler.instruction_at(self.pc)[1])
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self.pc = (self.pc + 1) & self.addrMask
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self.excycles = 0
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self.addcycles = self.extracycles[instructCode]
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@ -8,11 +8,11 @@ class MPU(mpu6502.MPU):
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self.name = '65C02'
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self.waiting = False
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def step(self):
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def step(self, trace=False):
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if self.waiting:
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self.processorCycles += 1
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else:
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mpu6502.MPU.step(self)
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mpu6502.MPU.step(self, trace)
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return self
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# Make copies of the lists
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