sms wip: initial graphics support

[picodrive.git] / pico / pico_int.h

diff --git a/pico/pico_int.h b/pico/pico_int.h
index 9841b18..6aea7de 100644 (file)
--- a/pico/pico_int.h
+++ b/pico/pico_int.h
@@ -272,7 +272,7 @@ struct PicoMisc
 struct Pico\r
 {\r
   unsigned char ram[0x10000];  // 0x00000 scratch ram\r
-  union {\r
+  union {                      // vram is byteswapped for easier reads when drawing\r
     unsigned short vram[0x8000];  // 0x10000\r
     unsigned char  vramb[0x4000]; // VRAM in SMS mode\r
   };\r
@@ -415,6 +415,7 @@ int CM_compareRun(int cyc, int is_sub);
 // draw.c\r
 PICO_INTERNAL void PicoFrameStart(void);\r
 void PicoDrawSync(int to, int blank_last_line);\r
+void BackFill(int reg7, int sh);\r
 extern int DrawScanline;\r
 #define MAX_LINE_SPRITES 29\r
 extern unsigned char HighLnSpr[240][3 + MAX_LINE_SPRITES];\r
@@ -422,6 +423,11 @@ extern unsigned char HighLnSpr[240][3 + MAX_LINE_SPRITES];
 // draw2.c\r
 PICO_INTERNAL void PicoFrameFull();\r
 \r
+// mode4.c\r
+void PicoFrameStartMode4(void);\r
+void PicoLineMode4(int line);\r
+void PicoDoHighPal555M4(void);\r
+\r
 // memory.c\r
 PICO_INTERNAL void PicoInitPc(unsigned int pc);\r
 PICO_INTERNAL unsigned int PicoCheckPc(unsigned int pc);\r