X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=pico%2Fmemory.h;h=eb440dd49ea03223dca6ac4c4a49fa63bb6baa0f;hb=fda2f31020bf0d6cf7b5dd70ec01cf390b7e1483;hp=44213714e53c008c29c1bbb3a9eeff06673ff785;hpb=77e58d93fe3fd60f3b0adc4b7364713db714c904;p=picodrive.git

diff --git a/pico/memory.h b/pico/memory.h
index 4421371..eb440dd 100644
--- a/pico/memory.h
+++ b/pico/memory.h
@@ -1,9 +1,11 @@
 // 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
@@ -45,7 +47,8 @@ void cpu68k_map_set(uptr *map, int start_addr, int end_addr,
 void cpu68k_map_all_ram(int start_addr, int end_addr, void *ptr, int is_sub);
 void m68k_map_unmap(int start_addr, int end_addr);
 
-#define map_flag_set(x) ((x) & ((uptr)1 << (sizeof(uptr) * 8 - 1)))
+#define MAP_FLAG ((uptr)1 << (sizeof(uptr) * 8 - 1))
+#define map_flag_set(x) ((x) & MAP_FLAG)
 
 #define MAKE_68K_READ8(name, map)               \
 u32 name(u32 a)                                 \
@@ -132,6 +135,25 @@ void name(u32 a, u32 d)                         \
   }                                             \
 }
 
+#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))