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authorrodri <rgl@antares-labs.eu>2020-02-15 15:52:57 +0000
committerrodri <rgl@antares-labs.eu>2020-02-15 15:52:57 +0000
commit18b3eed7f80a100c31b2b92c9e53c781102e0e90 (patch)
tree2b421b2ed0ed882967c12a29e77182ae24b3ef21
parent7d4a68fb777f3562c3ef87ce2130aef4bbc36b2b (diff)
downloadgbadev-master.tar.gz
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add display i/o registers and some display control values.HEADmaster
-rw-r--r--main.c4
-rw-r--r--regs.h72
2 files changed, 65 insertions, 11 deletions
diff --git a/main.c b/main.c
index caa0e59..265cf02 100644
--- a/main.c
+++ b/main.c
@@ -1,7 +1,7 @@
#include "dat.h"
#include "regs.h"
-uint *ioram = (uint*)IORAM;
+ushort *ioram = (ushort*)IORAM;
ushort *vram = (ushort*)VRAM;
Point
@@ -33,7 +33,7 @@ main()
{
int i, c;
- *ioram = 0x0403;
+ ioram[DISPCNT] = BGMODE3|DISPBG2;
for(i = 0; i < SCRH; i++){
c = 31*i/SCRH;
drawpixel(Pt(i,i), rgb(c,c,c));
diff --git a/regs.h b/regs.h
index 2c93048..ae35acc 100644
--- a/regs.h
+++ b/regs.h
@@ -1,9 +1,63 @@
-#define SYSROM 0x00000000UL
-#define EWRAM 0x02000000UL
-#define IWRAM 0x03000000UL
-#define IORAM 0x04000000UL
-#define PALRAM 0x05000000UL
-#define VRAM 0x06000000UL
-#define OAM 0x07000000UL
-#define PAKROM 0x08000000UL
-#define CART 0x0E000000UL
+/* memory map */
+enum {
+ SYSROM = 0x00000000,
+ EWRAM = 0x02000000,
+ IWRAM = 0x03000000,
+ IORAM = 0x04000000,
+ PALRAM = 0x05000000,
+ VRAM = 0x06000000,
+ OAM = 0x07000000,
+ PAKROM = 0x08000000,
+ CART = 0x0E000000
+};
+/* i/o registers */
+enum {
+ DISPCNT = 0x00, /* LCD control */
+ BGMODE0 = 0x0000,
+ BGMODE1 = 0x0001,
+ BGMODE2 = 0x0002,
+ BGMODE3 = 0x0003,
+ BGMODE4 = 0x0004,
+ BGMODE5 = 0x0005,
+ DISPBG0 = 0x0100,
+ DISPBG1 = 0x0200,
+ DISPBG2 = 0x0400,
+ DISPBG3 = 0x0800,
+ DISPOBJ = 0x1000,
+ DISPSTAT = 0x04, /* general LCD status */
+ VCOUNT = 0x06,
+ BG0CNT = 0x08,
+ BG1CNT = 0x0A,
+ BG2CNT = 0x0C,
+ BG3CNT = 0x0E,
+ BG0HOFS = 0x10,
+ BG0VOFS = 0x12,
+ BG1HOFS = 0x14,
+ BG1VOFS = 0x16,
+ BG2HOFS = 0x18,
+ BG2VOFS = 0x1A,
+ BG3HOFS = 0x1C,
+ BG3VOFS = 0x1E,
+ BG2PA = 0x20, /* BG2 Rotation/Scaling Parameter A (dx) */
+ BG2PB = 0x22, /* BG2 Rotation/Scaling Parameter B (dmx) */
+ BG2PC = 0x24, /* BG2 Rotation/Scaling Parameter C (dy) */
+ BG2PD = 0x26, /* BG2 Rotation/Scaling Parameter D (dmy) */
+ BG2X = 0x28, /* BG2 Reference Point X-Coordinate */
+ BG2Y = 0x2C, /* BG2 Reference Point X-Coordinate */
+ BG3PA = 0x30, /* BG3 Rotation/Scaling Parameter A (dx) */
+ BG3PB = 0x32, /* BG3 Rotation/Scaling Parameter B (dmx) */
+ BG3PC = 0x34, /* BG3 Rotation/Scaling Parameter C (dy) */
+ BG3PD = 0x36, /* BG3 Rotation/Scaling Parameter D (dmy) */
+ BG3X = 0x38, /* BG3 Reference Point X-Coordinate */
+ BG3Y = 0x3C, /* BG3 Reference Point Y-Coordinate */
+ WIN0H = 0x40, /* Window 0 Horizontal Dimensions */
+ WIN1H = 0x42, /* Window 1 Horizontal Dimensions */
+ WIN0V = 0x44, /* Window 0 Vertical Dimensions */
+ WIN1V = 0x46, /* Window 1 Vertical Dimensions */
+ WININ = 0x48, /* Inside of Window 0 and 1 */
+ WINOUT = 0x4A, /* Inside of OBJ Window & Outside of Windows */
+ MOSAIC = 0x4C, /* Mosaic Size */
+ BLDCNT = 0x50, /* Color Special Effects Selection */
+ BLDALPHA = 0x52, /* Alpha Blending Coefficients */
+ BLDY = 0x54 /* Brightness (Fade-In/Out) Coefficient */
+};