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nice big refactor
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@ -43,10 +43,10 @@ public class SubImmFromRm16Handler : InstructionHandler
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}
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// Extract the fields from the ModR/M byte
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var (mod, reg, rm, operand) = ModRMDecoder.ReadModRM();
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var (mod, reg, rm, destOperand) = ModRMDecoder.ReadModRM();
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// Check if this is a SUB instruction (reg field must be 5)
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if (reg != 5)
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if (reg != RegisterIndex.Di)
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{
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return false;
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}
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@ -54,9 +54,6 @@ public class SubImmFromRm16Handler : InstructionHandler
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// Set the mnemonic
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instruction.Mnemonic = "sub";
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// Update the decoder position
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Decoder.SetPosition(position);
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// For mod == 3, the r/m field specifies a register
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string destination;
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if (mod == 3)
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@ -66,11 +63,8 @@ public class SubImmFromRm16Handler : InstructionHandler
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}
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else
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{
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// Get the memory operand string
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destination = ModRMDecoder.DecodeModRM(mod, rm, false);
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// Replace "dword" with "word" in the memory operand
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destination = destination.Replace("dword", "word");
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destination = destOperand.Replace("dword", "word");
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}
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// Get the current position after processing the ModR/M byte
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