69 lines
1.6 KiB
C#
69 lines
1.6 KiB
C#
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using System;
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using BizHawk.Emulation.Common;
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namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
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{
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public partial class Gameboy : ISaveRam
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{
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public bool SaveRamModified
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{
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get
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{
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if (LibGambatte.gambatte_savesavedatalength(GambatteState) == 0)
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return false;
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else
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return true; // need to wire more stuff into the core to actually know this
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}
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}
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public byte[] CloneSaveRam()
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{
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int length = LibGambatte.gambatte_savesavedatalength(GambatteState);
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if (length > 0)
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{
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byte[] ret = new byte[length];
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LibGambatte.gambatte_savesavedata(GambatteState, ret);
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return ret;
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}
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else
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return new byte[0];
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}
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public void StoreSaveRam(byte[] data)
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{
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int expected = LibGambatte.gambatte_savesavedatalength(GambatteState);
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switch (data.Length - expected)
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{
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case 0:
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break;
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default:
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throw new ArgumentException("Size of saveram data does not match expected!");
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case 44:
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data = FixRTC(data, 44);
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break;
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case 40:
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data = FixRTC(data, 40);
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break;
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}
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LibGambatte.gambatte_loadsavedata(GambatteState, data);
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}
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private byte[] FixRTC(byte[] data, int offset)
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{
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// length - offset is the start of the VBA-only data; so
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// length - offset - 4 is the start of the RTC block
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int idx = data.Length - offset - 4;
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byte[] ret = new byte[idx + 4];
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Buffer.BlockCopy(data, 0, ret, 0, idx);
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data[idx] = (byte)zerotime;
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data[idx + 1] = (byte)(zerotime >> 8);
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data[idx + 2] = (byte)(zerotime >> 16);
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data[idx + 3] = (byte)(zerotime >> 24);
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return ret;
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}
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}
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}
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