a12b1b29 |
1 | /* |
2 | * should better do some pointer stuff here. But as none of these bankswitch |
3 | * while the game runs, memcpy will suffice. |
4 | */ |
5 | |
757f8dae |
6 | #include "../PicoInt.h" |
7 | |
a12b1b29 |
8 | |
9 | /* 12-in-1 and 4-in-1. Assuming 2MB ROMs here. */ |
757f8dae |
10 | static unsigned int carthw_12in1_read16(unsigned int a, int realsize) |
11 | { |
12 | // ?? |
13 | elprintf(EL_UIO, "12-in-1: read [%06x] @ %06x", a, SekPc); |
14 | return 0; |
15 | } |
16 | |
17 | static void carthw_12in1_write8(unsigned int a, unsigned int d, int realsize) |
18 | { |
19 | int len; |
20 | |
21 | if (a < 0xA13000 || a >= 0xA13040) { |
a12b1b29 |
22 | /* 4-in-1 has Real Deal Boxing, which uses serial eeprom, |
23 | * but I really doubt that pirate cart had it */ |
24 | if (a != 0x200001) |
25 | elprintf(EL_ANOMALY, "12-in-1: unexpected write [%06x] %02x @ %06x", a, d, SekPc); |
26 | return; |
757f8dae |
27 | } |
28 | |
29 | a &= 0x3f; a <<= 16; |
30 | len = Pico.romsize - a; |
31 | if (len <= 0) { |
32 | elprintf(EL_ANOMALY, "12-in-1: missing bank @ %06x", a); |
33 | return; |
34 | } |
35 | |
a12b1b29 |
36 | memcpy(Pico.rom, Pico.rom + Pico.romsize + a, len); |
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37 | } |
38 | |
39 | static void carthw_12in1_reset(void) |
40 | { |
41 | carthw_12in1_write8(0xA13000, 0, 0); |
42 | } |
43 | |
44 | void carthw_12in1_startup(void) |
45 | { |
46 | void *tmp; |
47 | |
48 | elprintf(EL_STATUS, "12-in-1 mapper detected"); |
49 | |
a12b1b29 |
50 | tmp = realloc(Pico.rom, Pico.romsize * 2); |
757f8dae |
51 | if (tmp == NULL) |
52 | { |
53 | elprintf(EL_STATUS, "OOM"); |
54 | return; |
55 | } |
a12b1b29 |
56 | Pico.rom = tmp; |
57 | memcpy(Pico.rom + Pico.romsize, Pico.rom, Pico.romsize); |
757f8dae |
58 | |
59 | PicoRead16Hook = carthw_12in1_read16; |
60 | PicoWrite8Hook = carthw_12in1_write8; |
61 | PicoResetHook = carthw_12in1_reset; |
62 | } |
63 | |
a12b1b29 |
64 | |
65 | /* Realtec, based on TascoDLX doc |
66 | * http://www.sharemation.com/TascoDLX/REALTEC%20Cart%20Mapper%20-%20description%20v1.txt |
67 | */ |
68 | static int realtec_bank = 0x80000000, realtec_size = 0x80000000; |
69 | static int realtec_romsize = 0; |
70 | |
71 | static void carthw_realtec_write8(unsigned int a, unsigned int d, int realsize) |
72 | { |
73 | int i, bank_old = realtec_bank, size_old = realtec_size; |
74 | |
75 | if (a == 0x400000) |
76 | { |
77 | realtec_bank &= 0x0e0000; |
78 | realtec_bank |= 0x300000 & (d << 19); |
79 | if (realtec_bank != bank_old) |
80 | elprintf(EL_ANOMALY, "write [%06x] %02x @ %06x", a, d, SekPc); |
81 | } |
82 | else if (a == 0x402000) |
83 | { |
84 | realtec_size = (d << 17) & 0x3e0000; |
85 | if (realtec_size != size_old) |
86 | elprintf(EL_ANOMALY, "write [%06x] %02x @ %06x", a, d, SekPc); |
87 | } |
88 | else if (a == 0x404000) |
89 | { |
90 | realtec_bank &= 0x300000; |
91 | realtec_bank |= 0x0e0000 & (d << 17); |
92 | if (realtec_bank != bank_old) |
93 | elprintf(EL_ANOMALY, "write [%06x] %02x @ %06x", a, d, SekPc); |
94 | } |
95 | else |
96 | elprintf(EL_ANOMALY, "realtec: unexpected write [%06x] %02x @ %06x", a, d, SekPc); |
97 | |
98 | if (realtec_bank >= 0 && realtec_size >= 0 && |
99 | (realtec_bank != bank_old || realtec_size != size_old)) |
100 | { |
101 | elprintf(EL_ANOMALY, "realtec: new bank %06x, size %06x", realtec_bank, realtec_size, SekPc); |
102 | if (realtec_size > realtec_romsize - realtec_bank || realtec_bank >= realtec_romsize) |
103 | { |
104 | elprintf(EL_ANOMALY, "realtec: bank too large / out of range?"); |
105 | return; |
106 | } |
107 | |
108 | for (i = 0; i < 0x400000; i += realtec_size) |
109 | memcpy(Pico.rom + i, Pico.rom + 0x400000 + realtec_bank, realtec_size); |
110 | } |
111 | } |
112 | |
113 | void carthw_realtec_reset(void) |
114 | { |
115 | int i; |
116 | /* map boot code */ |
117 | for (i = 0; i < 0x400000; i += 0x2000) |
118 | memcpy(Pico.rom + i, Pico.rom + 0x400000 + realtec_romsize - 0x2000, 0x2000); |
119 | realtec_bank = realtec_size = 0x80000000; |
120 | } |
121 | |
122 | void carthw_realtec_startup(void) |
123 | { |
124 | void *tmp; |
125 | |
126 | elprintf(EL_STATUS, "Realtec mapper detected"); |
127 | |
128 | realtec_romsize = Pico.romsize; |
129 | Pico.romsize = 0x400000; |
130 | tmp = realloc(Pico.rom, 0x400000 + realtec_romsize); |
131 | if (tmp == NULL) |
132 | { |
133 | elprintf(EL_STATUS, "OOM"); |
134 | return; |
135 | } |
136 | Pico.rom = tmp; |
137 | memcpy(Pico.rom + 0x400000, Pico.rom, realtec_romsize); |
138 | |
139 | PicoWrite8Hook = carthw_realtec_write8; |
140 | PicoResetHook = carthw_realtec_reset; |
141 | } |
142 | |