// TODO...
+// #include <string.h>
#include "../PicoInt.h"
+#define rot_comp Pico_mcd->rot_comp
+
+static int Table_Rot_Time[] =
+{
+ 0x00054000, 0x00048000, 0x00040000, 0x00036000, //; 008-032 ; briefing - sprite
+ 0x0002E000, 0x00028000, 0x00024000, 0x00022000, //; 036-064 ; arbre souvent
+ 0x00021000, 0x00020000, 0x0001E000, 0x0001B800, //; 068-096 ; map thunderstrike
+ 0x00019800, 0x00017A00, 0x00015C00, 0x00013E00, //; 100-128 ; logo défoncé
+
+ 0x00012000, 0x00011800, 0x00011000, 0x00010800, //; 132-160 ; briefing - map
+ 0x00010000, 0x0000F800, 0x0000F000, 0x0000E800, //; 164-192
+ 0x0000E000, 0x0000D800, 0x0000D000, 0x0000C800, //; 196-224
+ 0x0000C000, 0x0000B800, 0x0000B000, 0x0000A800, //; 228-256 ; batman visage
+
+ 0x0000A000, 0x00009F00, 0x00009E00, 0x00009D00, //; 260-288
+ 0x00009C00, 0x00009B00, 0x00009A00, 0x00009900, //; 292-320
+ 0x00009800, 0x00009700, 0x00009600, 0x00009500, //; 324-352
+ 0x00009400, 0x00009300, 0x00009200, 0x00009100, //; 356-384
+
+ 0x00009000, 0x00008F00, 0x00008E00, 0x00008D00, //; 388-416
+ 0x00008C00, 0x00008B00, 0x00008A00, 0x00008900, //; 420-448
+ 0x00008800, 0x00008700, 0x00008600, 0x00008500, //; 452-476
+ 0x00008400, 0x00008300, 0x00008200, 0x00008100, //; 480-512
+};
+
+
+#if 1*0
+typedef struct
+{
+ unsigned int Reg_58; // Stamp_Size
+ unsigned int Reg_5A;
+ unsigned int Reg_5C;
+ unsigned int Reg_5E;
+ unsigned int Reg_60;
+ unsigned int Reg_62;
+ unsigned int Reg_64; // V_Dot
+ unsigned int Reg_66;
+
+ unsigned int Stamp_Map_Adr;
+ unsigned int Buffer_Adr;
+ unsigned int Vector_Adr;
+ unsigned int Jmp_Adr;
+ unsigned int Float_Part;
+ unsigned int Draw_Speed;
+
+ unsigned int XS;
+ unsigned int YS;
+ unsigned int DXS;
+ unsigned int DYS;
+ unsigned int XD;
+ unsigned int YD;
+ unsigned int XD_Mul;
+ unsigned int H_Dot;
+} Rot_Comp;
+#endif
static void gfx_cd_start(void)
{
- dprintf("gfx_cd_start()");
+ int upd_len;
+
+ dprintf("gfx_cd_start()");
+
+ upd_len = (rot_comp.Reg_62 >> 3) & 0x3f;
+ upd_len = Table_Rot_Time[upd_len];
+
+ rot_comp.Draw_Speed = rot_comp.Float_Part = upd_len;
+
+ rot_comp.Reg_58 |= 0x8000; // Stamp_Size, we start a new GFX operation
+
+ gfx_cd_update();
+}
+
+
+static void gfx_completed(void)
+{
+ rot_comp.Reg_58 &= 0x7fff; // Stamp_Size
+ rot_comp.Reg_64 = 0;
if (Pico_mcd->s68k_regs[0x33] & (1<<1))
{
dprintf("gfx_cd irq 1");
}
}
+
+//static void gfx_do(void)
+//{
+//}
+
+
void gfx_cd_update(void)
{
+ unsigned char *V_Dot = (unsigned char *) &rot_comp.Reg_64;
+ int jobs;
+
+ dprintf("gfx_cd_update, Reg_64 = %04x", rot_comp.Reg_64);
+
+ if (!*V_Dot)
+ {
+ // ...
+ gfx_completed();
+ return;
+ }
+
+ jobs = rot_comp.Float_Part >> 16;
+
+ if (!jobs)
+ {
+ rot_comp.Float_Part += rot_comp.Draw_Speed;
+ return;
+ }
+
+ rot_comp.Float_Part &= 0xffff;
+ rot_comp.Float_Part += rot_comp.Draw_Speed;
+
+ while (jobs--)
+ {
+ // jmp [Jmp_Adr]:
+ (*V_Dot)--; // dec byte [V_Dot]
+
+ if (!*V_Dot)
+ {
+ // GFX_Completed:
+ gfx_completed();
+ return;
+ }
+ }
}
unsigned int gfx_cd_read(unsigned int a)
{
- dprintf("gfx_cd_read(%x)", a);
+ unsigned int d = 0;
+
+ switch (a) {
+ case 0x58: d = rot_comp.Reg_58; break;
+ case 0x5A: d = rot_comp.Reg_5A; break;
+ case 0x5C: d = rot_comp.Reg_5C; break;
+ case 0x5E: d = rot_comp.Reg_5E; break;
+ case 0x60: d = rot_comp.Reg_60; break;
+ case 0x62: d = rot_comp.Reg_62; break;
+ case 0x64: d = rot_comp.Reg_64; break;
+ case 0x66: break;
+ default: dprintf("gfx_cd_read: unexpected address: %02x", a); break;
+ }
+
+ dprintf("gfx_cd_read(%02x) = %04x", a, d);
-// switch (a) {
-// case 2:
-// return;
return 0;
}
dprintf("gfx_cd_write(%x, %04x)", a, d);
switch (a) {
- case 0x66:
+ case 0x58: // .Reg_Stamp_Size
+ rot_comp.Reg_58 = d & 7;
+ return;
+
+ case 0x5A: // .Reg_Stamp_Adr
+ rot_comp.Reg_5A = d & 0xffe0;
+ return;
+
+ case 0x5C: // .Reg_IM_VCell_Size
+ rot_comp.Reg_5C = d & 0x1f;
+ return;
+
+ case 0x5E: // .Reg_IM_Adr
+ rot_comp.Reg_5E = d & 0xFFF8;
+ return;
+
+ case 0x60: // .Reg_IM_Offset
+ rot_comp.Reg_60 = d & 0x3f;
+ return;
+
+ case 0x62: // .Reg_IM_HDot_Size
+ rot_comp.Reg_62 = d & 0x1ff;
+ return;
+
+ case 0x64: // .Reg_IM_VDot_Size
+ rot_comp.Reg_64 = d & 0xff; // V_Dot, must be 32bit?
+ return;
+
+ case 0x66: // .Reg_Vector_Adr
+ rot_comp.Reg_66 = d & 0xfffe;
if (Pico_mcd->s68k_regs[3]&4) return; // can't do tanformations in 1M mode
gfx_cd_start();
return;
+
+ default: dprintf("gfx_cd_write: unexpected address: %02x", a); return;
}
}
+
+void gfx_cd_reset(void)
+{
+ memset(&rot_comp.Reg_58, 0, 0/*sizeof(Pico_mcd->rot_comp)*/);
+}
+
notaz.gp2x.de / picodrive.git / blobdiff