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1 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
2 | * Mupen64plus-rsp-hle - cicx105.c * |
3 | * Mupen64Plus homepage: http://code.google.com/p/mupen64plus/ * |
4 | * Copyright (C) 2012 Bobby Smiles * |
5 | * Copyright (C) 2009 Richard Goedeken * |
6 | * Copyright (C) 2002 Hacktarux * |
7 | * * |
8 | * This program is free software; you can redistribute it and/or modify * |
9 | * it under the terms of the GNU General Public License as published by * |
10 | * the Free Software Foundation; either version 2 of the License, or * |
11 | * (at your option) any later version. * |
12 | * * |
13 | * This program is distributed in the hope that it will be useful, * |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
16 | * GNU General Public License for more details. * |
17 | * * |
18 | * You should have received a copy of the GNU General Public License * |
19 | * along with this program; if not, write to the * |
20 | * Free Software Foundation, Inc., * |
21 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * |
22 | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
23 | |
24 | #include <string.h> |
25 | |
26 | #include "hle.h" |
27 | |
28 | /** |
29 | * During IPL3 stage of CIC x105 games, the RSP performs some checks and transactions |
30 | * necessary for booting the game. |
31 | * |
32 | * We only implement the needed DMA transactions for booting. |
33 | * |
34 | * Found in Banjo-Tooie, Zelda, Perfect Dark, ...) |
35 | **/ |
36 | void cicx105_ucode() |
37 | { |
38 | // memcpy is okay to use because access constrains are met (alignment, size) |
39 | unsigned int i; |
40 | unsigned char * dst = rsp.RDRAM + 0x2fb1f0; |
41 | unsigned char * src = rsp.IMEM + 0x120; |
42 | |
43 | /* dma_read(0x1120, 0x1e8, 0x1e8) */ |
44 | memcpy(rsp.IMEM + 0x120, rsp.RDRAM + 0x1e8, 0x1f0); |
45 | |
46 | /* dma_write(0x1120, 0x2fb1f0, 0xfe817000) */ |
47 | for (i = 0; i < 24; ++i) |
48 | { |
49 | memcpy(dst, src, 8); |
50 | dst += 0xff0; |
51 | src += 0x8; |
52 | |
53 | } |
54 | } |
55 | |