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Remove unused borrow logic from SBC
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@ -426,11 +426,6 @@ class MPU:
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self.p |= self.OVERFLOW
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self.a = (nibble1 << 4) + nibble0
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else:
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if self.p & self.CARRY:
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borrow = 0
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else:
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borrow = 1
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result = self.a + (~data & self.byteMask) + (self.p & self.CARRY)
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self.p &= ~(self.CARRY | self.ZERO | self.OVERFLOW | self.NEGATIVE)
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if ((self.a ^ data) & (self.a ^ result)) & self.NEGATIVE:
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