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gfx chip faker, hint vector

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@20 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2007-01-14 22:40:03 +00:00
parent ab0607f7e4
commit d1df87866b
5 changed files with 217 additions and 10 deletions
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169
Pico/cd/gfx_cd.c
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@ -2,10 +2,83 @@
#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");
@ -13,18 +86,70 @@ static void gfx_cd_start(void)
}
}
//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;
}
@ -33,10 +158,42 @@ void gfx_cd_write(unsigned int a, unsigned int d)
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;
}
}