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. */ |
bdec53c9 |
10 | static unsigned int carthw_12in1_baddr = 0; |
11 | |
12 | static carthw_state_chunk carthw_12in1_state[] = |
13 | { |
14 | { CHUNK_CARTHW, sizeof(carthw_12in1_baddr), &carthw_12in1_baddr }, |
15 | { 0, 0, NULL } |
16 | }; |
17 | |
757f8dae |
18 | static unsigned int carthw_12in1_read16(unsigned int a, int realsize) |
19 | { |
20 | // ?? |
21 | elprintf(EL_UIO, "12-in-1: read [%06x] @ %06x", a, SekPc); |
22 | return 0; |
23 | } |
24 | |
25 | static void carthw_12in1_write8(unsigned int a, unsigned int d, int realsize) |
26 | { |
27 | int len; |
28 | |
29 | if (a < 0xA13000 || a >= 0xA13040) { |
a12b1b29 |
30 | /* 4-in-1 has Real Deal Boxing, which uses serial eeprom, |
31 | * but I really doubt that pirate cart had it */ |
32 | if (a != 0x200001) |
33 | elprintf(EL_ANOMALY, "12-in-1: unexpected write [%06x] %02x @ %06x", a, d, SekPc); |
34 | return; |
757f8dae |
35 | } |
36 | |
bdec53c9 |
37 | carthw_12in1_baddr = a; |
757f8dae |
38 | a &= 0x3f; a <<= 16; |
39 | len = Pico.romsize - a; |
40 | if (len <= 0) { |
41 | elprintf(EL_ANOMALY, "12-in-1: missing bank @ %06x", a); |
42 | return; |
43 | } |
44 | |
a12b1b29 |
45 | memcpy(Pico.rom, Pico.rom + Pico.romsize + a, len); |
757f8dae |
46 | } |
47 | |
48 | static void carthw_12in1_reset(void) |
49 | { |
50 | carthw_12in1_write8(0xA13000, 0, 0); |
51 | } |
52 | |
bdec53c9 |
53 | static void carthw_12in1_statef(void) |
54 | { |
55 | carthw_12in1_write8(carthw_12in1_baddr, 0, 0); |
56 | } |
57 | |
757f8dae |
58 | void carthw_12in1_startup(void) |
59 | { |
60 | void *tmp; |
61 | |
62 | elprintf(EL_STATUS, "12-in-1 mapper detected"); |
63 | |
a12b1b29 |
64 | tmp = realloc(Pico.rom, Pico.romsize * 2); |
757f8dae |
65 | if (tmp == NULL) |
66 | { |
67 | elprintf(EL_STATUS, "OOM"); |
68 | return; |
69 | } |
a12b1b29 |
70 | Pico.rom = tmp; |
71 | memcpy(Pico.rom + Pico.romsize, Pico.rom, Pico.romsize); |
757f8dae |
72 | |
73 | PicoRead16Hook = carthw_12in1_read16; |
74 | PicoWrite8Hook = carthw_12in1_write8; |
75 | PicoResetHook = carthw_12in1_reset; |
bdec53c9 |
76 | PicoLoadStateHook = carthw_12in1_statef; |
77 | carthw_chunks = carthw_12in1_state; |
757f8dae |
78 | } |
79 | |
a12b1b29 |
80 | |
81 | /* Realtec, based on TascoDLX doc |
82 | * http://www.sharemation.com/TascoDLX/REALTEC%20Cart%20Mapper%20-%20description%20v1.txt |
83 | */ |
84 | static int realtec_bank = 0x80000000, realtec_size = 0x80000000; |
85 | static int realtec_romsize = 0; |
86 | |
87 | static void carthw_realtec_write8(unsigned int a, unsigned int d, int realsize) |
88 | { |
89 | int i, bank_old = realtec_bank, size_old = realtec_size; |
90 | |
91 | if (a == 0x400000) |
92 | { |
93 | realtec_bank &= 0x0e0000; |
94 | realtec_bank |= 0x300000 & (d << 19); |
95 | if (realtec_bank != bank_old) |
96 | elprintf(EL_ANOMALY, "write [%06x] %02x @ %06x", a, d, SekPc); |
97 | } |
98 | else if (a == 0x402000) |
99 | { |
100 | realtec_size = (d << 17) & 0x3e0000; |
101 | if (realtec_size != size_old) |
102 | elprintf(EL_ANOMALY, "write [%06x] %02x @ %06x", a, d, SekPc); |
103 | } |
104 | else if (a == 0x404000) |
105 | { |
106 | realtec_bank &= 0x300000; |
107 | realtec_bank |= 0x0e0000 & (d << 17); |
108 | if (realtec_bank != bank_old) |
109 | elprintf(EL_ANOMALY, "write [%06x] %02x @ %06x", a, d, SekPc); |
110 | } |
111 | else |
112 | elprintf(EL_ANOMALY, "realtec: unexpected write [%06x] %02x @ %06x", a, d, SekPc); |
113 | |
114 | if (realtec_bank >= 0 && realtec_size >= 0 && |
115 | (realtec_bank != bank_old || realtec_size != size_old)) |
116 | { |
117 | elprintf(EL_ANOMALY, "realtec: new bank %06x, size %06x", realtec_bank, realtec_size, SekPc); |
118 | if (realtec_size > realtec_romsize - realtec_bank || realtec_bank >= realtec_romsize) |
119 | { |
120 | elprintf(EL_ANOMALY, "realtec: bank too large / out of range?"); |
121 | return; |
122 | } |
123 | |
124 | for (i = 0; i < 0x400000; i += realtec_size) |
125 | memcpy(Pico.rom + i, Pico.rom + 0x400000 + realtec_bank, realtec_size); |
126 | } |
127 | } |
128 | |
129 | void carthw_realtec_reset(void) |
130 | { |
131 | int i; |
132 | /* map boot code */ |
133 | for (i = 0; i < 0x400000; i += 0x2000) |
134 | memcpy(Pico.rom + i, Pico.rom + 0x400000 + realtec_romsize - 0x2000, 0x2000); |
135 | realtec_bank = realtec_size = 0x80000000; |
136 | } |
137 | |
138 | void carthw_realtec_startup(void) |
139 | { |
140 | void *tmp; |
141 | |
142 | elprintf(EL_STATUS, "Realtec mapper detected"); |
143 | |
144 | realtec_romsize = Pico.romsize; |
145 | Pico.romsize = 0x400000; |
146 | tmp = realloc(Pico.rom, 0x400000 + realtec_romsize); |
147 | if (tmp == NULL) |
148 | { |
149 | elprintf(EL_STATUS, "OOM"); |
150 | return; |
151 | } |
152 | Pico.rom = tmp; |
153 | memcpy(Pico.rom + 0x400000, Pico.rom, realtec_romsize); |
154 | |
155 | PicoWrite8Hook = carthw_realtec_write8; |
156 | PicoResetHook = carthw_realtec_reset; |
157 | } |
158 | |