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Diffstat (limited to 'DMA.h')
-rw-r--r-- | DMA.h | 56 |
1 files changed, 56 insertions, 0 deletions
@@ -0,0 +1,56 @@ +/* + 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 |