blob: cb33811fb2fed27bdd41521cd01b9b2702e22552 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
/*===================================================================*/
/* */
/* Mapper 202 (150-in-1) */
/* */
/*===================================================================*/
/*-------------------------------------------------------------------*/
/* Initialize Mapper 202 */
/*-------------------------------------------------------------------*/
void Map202_Init()
{
/* Initialize Mapper */
MapperInit = Map202_Init;
/* Write to Mapper */
MapperWrite = Map202_Write;
/* Write to SRAM */
MapperSram = Map0_Sram;
/* Write to APU */
MapperApu = Map202_Apu;
/* Read from APU */
MapperReadApu = Map0_ReadApu;
/* Callback at VSync */
MapperVSync = Map0_VSync;
/* Callback at HSync */
MapperHSync = Map0_HSync;
/* Callback at PPU */
MapperPPU = Map0_PPU;
/* Callback at Rendering Screen ( 1:BG, 0:Sprite ) */
MapperRenderScreen = Map0_RenderScreen;
/* Set SRAM Banks */
SRAMBANK = SRAM;
/* Set ROM Banks */
ROMBANK0 = ROMPAGE( 12 );
ROMBANK1 = ROMPAGE( 13 );
ROMBANK2 = ROMPAGE( 14 );
ROMBANK3 = ROMPAGE( 15 );
/* Set PPU Banks */
if ( NesHeader.byVRomSize > 0 ) {
for ( int nPage = 0; nPage < 8; ++nPage )
PPUBANK[ nPage ] = VROMPAGE( nPage );
InfoNES_SetupChr();
}
/* Set up wiring of the interrupt pin */
K6502_Set_Int_Wiring( 1, 1 );
}
/*-------------------------------------------------------------------*/
/* Mapper 202 Write to APU Function */
/*-------------------------------------------------------------------*/
void Map202_Apu( WORD wAddr, BYTE byData )
{
Map202_WriteSub( wAddr, byData );
}
/*-------------------------------------------------------------------*/
/* Mapper 202 Write Function */
/*-------------------------------------------------------------------*/
void Map202_Write( WORD wAddr, BYTE byData )
{
Map202_WriteSub( wAddr, byData );
}
/*-------------------------------------------------------------------*/
/* Mapper 202 Write Sub Function */
/*-------------------------------------------------------------------*/
void Map202_WriteSub( WORD wAddr, BYTE byData )
{
int bank = (wAddr>>1) & 0x07;
/* Set ROM Banks */
ROMBANK0 = ROMPAGE(((bank<<1)+0) % (NesHeader.byRomSize<<1));
ROMBANK1 = ROMPAGE(((bank<<1)+1) % (NesHeader.byRomSize<<1));
if ((wAddr&0x0c) == 0x0c) {
ROMBANK2 = ROMPAGE((((bank+1)<<1)+0) % (NesHeader.byRomSize<<1));
ROMBANK3 = ROMPAGE((((bank+1)<<1)+1) % (NesHeader.byRomSize<<1));
} else {
ROMBANK2 = ROMPAGE((((bank+0)<<1)+0) % (NesHeader.byRomSize<<1));
ROMBANK3 = ROMPAGE((((bank+0)<<1)+1) % (NesHeader.byRomSize<<1));
}
/* Set PPU Banks */
PPUBANK[0] = VROMPAGE(((bank<<3)+0) % (NesHeader.byVRomSize<<3));
PPUBANK[1] = VROMPAGE(((bank<<3)+1) % (NesHeader.byVRomSize<<3));
PPUBANK[2] = VROMPAGE(((bank<<3)+2) % (NesHeader.byVRomSize<<3));
PPUBANK[3] = VROMPAGE(((bank<<3)+3) % (NesHeader.byVRomSize<<3));
PPUBANK[4] = VROMPAGE(((bank<<3)+4) % (NesHeader.byVRomSize<<3));
PPUBANK[5] = VROMPAGE(((bank<<3)+5) % (NesHeader.byVRomSize<<3));
PPUBANK[6] = VROMPAGE(((bank<<3)+6) % (NesHeader.byVRomSize<<3));
PPUBANK[7] = VROMPAGE(((bank<<3)+7) % (NesHeader.byVRomSize<<3));
InfoNES_SetupChr();
if ( wAddr & 0x01 ) {
InfoNES_Mirroring( 0 );
} else {
InfoNES_Mirroring( 1 );
}
}
|
