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fix #672
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@ -1078,7 +1078,7 @@ void A_QDADD(ARM* cpu)
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u32 rm = cpu->R[cpu->CurInstr & 0xF];
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u32 rn = cpu->R[(cpu->CurInstr >> 16) & 0xF];
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if (rn & 0x40000000)
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if (OVERFLOW_ADD(rn, rn, rn<<1))
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{
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rn = (rn & 0x80000000) ? 0x80000000 : 0x7FFFFFFF;
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cpu->CPSR |= 0x08000000; // CHECKME
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@ -1104,7 +1104,7 @@ void A_QDSUB(ARM* cpu)
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u32 rm = cpu->R[cpu->CurInstr & 0xF];
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u32 rn = cpu->R[(cpu->CurInstr >> 16) & 0xF];
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if (rn & 0x40000000)
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if (OVERFLOW_ADD(rn, rn, rn<<1))
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{
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rn = (rn & 0x80000000) ? 0x80000000 : 0x7FFFFFFF;
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cpu->CPSR |= 0x08000000; // CHECKME
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