ref: 3da7cb4231ab12fc937c34405d888bca2bab03c4
dir: /snes/dma.h/
#ifndef DMA_H #define DMA_H #include <stdio.h> #include <stdlib.h> #include <string.h> #include <stdint.h> #include <stdbool.h> typedef struct Dma Dma; #include "snes.h" typedef struct DmaChannel { uint8_t bAdr; uint8_t aBank; uint8_t indBank; // hdma uint8_t repCount; // hdma uint16_t aAdr; uint16_t size; // also indirect hdma adr uint16_t tableAdr; // hdma uint8_t unusedByte; bool dmaActive; bool hdmaActive; uint8_t mode; bool fixed; bool decrement; bool indirect; // hdma bool fromB; bool unusedBit; bool doTransfer; // hdma bool terminated; // hdma uint8_t offIndex; } DmaChannel; struct Dma { Snes* snes; DmaChannel channel[8]; uint16_t hdmaTimer; uint32_t dmaTimer; bool dmaBusy; }; Dma* dma_init(Snes* snes); void dma_free(Dma* dma); void dma_reset(Dma* dma); uint8_t dma_read(Dma* dma, uint16_t adr); // 43x0-43xf void dma_write(Dma* dma, uint16_t adr, uint8_t val); // 43x0-43xf void dma_doDma(Dma* dma); void dma_initHdma(Dma* dma); void dma_doHdma(Dma* dma); bool dma_cycle(Dma* dma); void dma_startDma(Dma* dma, uint8_t val, bool hdma); void dma_saveload(Dma *dma, SaveLoadFunc *func, void *ctx); #endif