melonDS/DMA.h

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2017-01-18 00:33:06 +00:00
/*
Copyright 2016-2017 StapleButter
This file is part of melonDS.
melonDS is free software: you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation, either version 3 of the License, or (at your option)
any later version.
melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with melonDS. If not, see http://www.gnu.org/licenses/.
*/
#ifndef DMA_H
#define DMA_H
#include "types.h"
class DMA
{
public:
DMA(u32 cpu, u32 num);
~DMA();
void Reset();
void WriteCnt(u32 val);
void Start();
void StartIfNeeded(u32 mode)
{
if ((mode == StartMode) && (Cnt & 0x80000000))
Start();
}
u32 SrcAddr;
u32 DstAddr;
u32 Cnt;
private:
u32 CPU, Num;
u32 StartMode;
u32 CurSrcAddr;
u32 CurDstAddr;
u32 RemCount;
u32 SrcAddrInc;
u32 DstAddrInc;
};
#endif