RSP HLE plugin. Compile and run on the OpenPandora

[mupen64plus-pandora.git] / source / mupen64plus-rsp-hle / src / cicx105.c

diff --git a/source/mupen64plus-rsp-hle/src/cicx105.c b/source/mupen64plus-rsp-hle/src/cicx105.c
new file mode 100644 (file)
index 0000000..1e89056
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+++ b/source/mupen64plus-rsp-hle/src/cicx105.c
@@ -0,0 +1,55 @@
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ *   Mupen64plus-rsp-hle - cicx105.c                                       *
+ *   Mupen64Plus homepage: http://code.google.com/p/mupen64plus/           *
+ *   Copyright (C) 2012 Bobby Smiles                                       *
+ *   Copyright (C) 2009 Richard Goedeken                                   *
+ *   Copyright (C) 2002 Hacktarux                                          *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.          *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+#include <string.h>
+
+#include "hle.h"
+
+/**
+ * During IPL3 stage of CIC x105 games, the RSP performs some checks and transactions
+ * necessary for booting the game.
+ * 
+ * We only implement the needed DMA transactions for booting.
+ *
+ * Found in Banjo-Tooie, Zelda, Perfect Dark, ...)
+ **/
+void cicx105_ucode()
+{
+    // memcpy is okay to use because access constrains are met (alignment, size)
+    unsigned int i;
+    unsigned char * dst = rsp.RDRAM + 0x2fb1f0;
+    unsigned char * src = rsp.IMEM + 0x120;
+
+    /* dma_read(0x1120, 0x1e8, 0x1e8) */
+    memcpy(rsp.IMEM + 0x120, rsp.RDRAM + 0x1e8, 0x1f0);
+
+    /* dma_write(0x1120, 0x2fb1f0, 0xfe817000) */
+    for (i = 0; i < 24; ++i)
+    {
+        memcpy(dst, src, 8);
+        dst += 0xff0;
+        src += 0x8;
+
+    }
+}
+