diff --git a/src/mame/machine/segacrp2_device.cpp b/src/mame/machine/segacrp2_device.cpp index b07f735445d..16f3ec0daa7 100644 --- a/src/mame/machine/segacrp2_device.cpp +++ b/src/mame/machine/segacrp2_device.cpp @@ -27,7 +27,7 @@ 315-5162 4D Warriors & used I'm Sorry for k.p.a. Rafflesia & Wonder Boy (set 4) - 315-5176 Wonder Boy (system 2 hardware, set 2) NOT DECRYPTED + 315-5176 Wonder Boy (system 2 hardware, set 2) 315-5177 Astro Flash & Wonder Boy (set 1) 315-5178 Wonder Boy (set 2) unencrypted version available @@ -166,8 +166,45 @@ sega_315_5176_device::sega_315_5176_device(const machine_config &mconfig, const void sega_315_5176_device::decrypt() { - // 315-5176 - // TODO! + static const uint8_t xor_table[128] = + { + 0x44, 0x01, 0x51, 0x15, 0x40, 0x04, 0x54, 0x11, 0x45, 0x00, 0x50, 0x14, + 0x41, 0x05, 0x55, 0x10, 0x44, 0x01, 0x51, 0x15, 0x40, 0x04, 0x54, 0x11, + 0x45, 0x00, 0x50, 0x14, 0x41, 0x05, 0x55, 0x10, 0x44, 0x01, 0x51, 0x15, + 0x40, 0x04, 0x54, 0x11, 0x45, 0x00, 0x50, 0x14, 0x41, 0x05, 0x55, 0x10, + 0x44, 0x01, 0x51, 0x15, 0x40, 0x04, 0x54, 0x11, 0x45, 0x00, 0x50, 0x14, + 0x41, 0x05, 0x55, 0x10, + + 0x44, 0x01, 0x51, 0x15, 0x40, 0x04, 0x54, 0x11, 0x45, 0x00, 0x50, 0x14, + 0x41, 0x05, 0x55, 0x10, 0x44, 0x01, 0x51, 0x15, 0x40, 0x04, 0x54, 0x11, + 0x45, 0x00, 0x50, 0x14, 0x41, 0x05, 0x55, 0x10, 0x44, 0x01, 0x51, 0x15, + 0x40, 0x04, 0x54, 0x11, 0x45, 0x00, 0x50, 0x14, 0x41, 0x05, 0x55, 0x10, + 0x44, 0x01, 0x51, 0x15, 0x40, 0x04, 0x54, 0x11, 0x45, 0x00, 0x50, 0x14, + 0x41, 0x05, 0x55, 0x10, + }; + + static const int swap_table[128] = + { + 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, + 0x01, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x03, + 0x03, 0x03, 0x03, 0x03, 0x04, 0x04, 0x04, 0x04, + 0x04, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x06, + 0x06, 0x06, 0x06, 0x06, 0x07, 0x07, 0x07, 0x07, + 0x07, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x09, + 0x09, 0x09, 0x09, 0x09, 0x0a, 0x0a, 0x0a, 0x0a, + 0x0a, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0c, + + 0x08, 0x08, 0x08, 0x08, 0x09, 0x09, 0x09, 0x09, + 0x09, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0b, + 0x0b, 0x0b, 0x0b, 0x0b, 0x0c, 0x0c, 0x0c, 0x0c, + 0x0c, 0x0d, 0x0d, 0x0d, 0x0d, 0x0d, 0x0d, 0x0e, + 0x0e, 0x0e, 0x0e, 0x0e, 0x0f, 0x0f, 0x0f, 0x0f, + 0x0f, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x11, + 0x11, 0x11, 0x11, 0x11, 0x12, 0x12, 0x12, 0x12, + 0x12, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x14, + }; + + decode(memregion(tag())->base(), m_decrypted, xor_table, swap_table); }