NES - mapper 231 - optimize the ReadPRG() method
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@ -86,12 +86,12 @@ namespace BizHawk.Emulation.Consoles.Nintendo
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if (low)
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{
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int bank = prg_reg & 0x1E;
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return ROM[(bank * 0x4000) + addr];
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return ROM[(bank << 14) + addr];
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}
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else
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{
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int bank = prg_reg;
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return ROM[(bank * 0x4000) + addr - 0x4000];
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return ROM[(bank << 14) + addr - 0x4000];
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}
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}
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