PPU upgrades, move Memory to own dir

src/app/emu/memory/dma.h

@@ -0,0 +1,59 @@
+#ifndef YAZE_APP_EMU_MEMORY_DMA_H
+#define YAZE_APP_EMU_MEMORY_DMA_H
+
+#include <cstdint>
+
+namespace yaze {
+namespace app {
+namespace emu {
+
+// Direct Memory Address
+class DMA {
+ public:
+  DMA() {
+    // Initialize DMA and HDMA channels
+    for (int i = 0; i < 8; ++i) {
+      channels[i].DMAPn = 0;
+      channels[i].BBADn = 0;
+      channels[i].UNUSEDn = 0;
+      channels[i].A1Tn = 0xFFFFFF;
+      channels[i].DASn = 0xFFFF;
+      channels[i].A2An = 0xFFFF;
+      channels[i].NLTRn = 0xFF;
+    }
+  }
+
+  // DMA Transfer Modes
+  enum class DMA_TRANSFER_TYPE {
+    OAM,
+    PPUDATA,
+    CGDATA,
+    FILL_VRAM,
+    CLEAR_VRAM,
+    RESET_VRAM
+  };
+
+  // Functions for handling DMA and HDMA transfers
+  void StartDMATransfer(uint8_t channels);
+  void EnableHDMATransfers(uint8_t channels);
+
+  // Structure for DMA and HDMA channel registers
+  struct Channel {
+    uint8_t DMAPn;    // DMA/HDMA parameters
+    uint8_t BBADn;    // B-bus address
+    uint8_t UNUSEDn;  // Unused byte
+    uint32_t A1Tn;    // DMA Current Address / HDMA Table Start Address
+    uint16_t DASn;    // DMA Byte-Counter / HDMA indirect table address
+    uint16_t A2An;    // HDMA Table Current Address
+    uint8_t NLTRn;    // HDMA Line-Counter
+  };
+  Channel channels[8];
+
+  uint8_t MDMAEN = 0;  // Start DMA transfer
+  uint8_t HDMAEN = 0;  // Enable HDMA transfers
+};
+}  // namespace emu
+}  // namespace app
+}  // namespace yaze
+
+#endif  // YAZE_APP_EMU_MEMORY_DMA_H