// memory map related stuff
+#include "pico_port.h"
+
typedef unsigned char u8;
typedef unsigned short u16;
typedef unsigned int u32;
-typedef unsigned long uptr; // unsigned pointer-sized int
+typedef uintptr_t uptr; // unsigned pointer-sized int
#define M68K_MEM_SHIFT 16
// minimum size we can map
} \
}
+#ifdef NEED_DMA_SOURCE // meh
+
+static __inline void *m68k_dma_source(u32 a)
+{
+ u8 *base;
+ uptr v;
+ v = m68k_read16_map[a >> M68K_MEM_SHIFT];
+ if (map_flag_set(v)) {
+ if (a >= Pico.romsize) // Rom
+ return NULL;
+ base = Pico.rom;
+ }
+ else
+ base = (void *)(v << 1);
+ return base + (a & 0xfe0000);
+}
+
+#endif
+
// 32x
typedef struct {
uptr addr; // stores (membase >> 1) or ((handler >> 1) | (1<<31))