From 6bd540721ca35f01d9276b31f23a80846436faf5 Mon Sep 17 00:00:00 2001 From: Ivan Vangelista Date: Tue, 19 Jan 2021 16:53:23 +0100 Subject: astrcorp.cpp: added preliminary decryption for dinodino --- src/mame/drivers/astrcorp.cpp | 63 ++++++++++++++++++++++++++++++++++++------- 1 file changed, 54 insertions(+), 9 deletions(-) diff --git a/src/mame/drivers/astrcorp.cpp b/src/mame/drivers/astrcorp.cpp index 41e68138c6d..08e62a88a1e 100644 --- a/src/mame/drivers/astrcorp.cpp +++ b/src/mame/drivers/astrcorp.cpp @@ -34,11 +34,11 @@ TODO: - Find source of level 2 interrupt (sprite DMA end?); - magibomb: fix timings; -- astoneag, magibombd: currently stop during with 'ROM error'. The first few hundred bytes don't decrypt correctly, - it it suspected there's a ROM overlay provided by the protection device; +- astoneag, magibombd: currently stop with 'ROM error'. The first few hundred bytes don't decrypt correctly, + it is suspected there's a ROM overlay provided by the protection device; - winbingo and clones, zulu: these should be at the same state of the two above, but don't show anything on screen; - magibomba, westvent: need a redump of one of the program ROMs; -- dinodino: not decrypted yet. +- dinodino: decryption should be on par with the others but code jumps early into the weeds after RTE. *************************************************************************************************************/ @@ -154,6 +154,7 @@ public: void astoneage(machine_config &config); void magibombd(machine_config &config); void init_astoneage(); + void init_dinodino(); void init_magibombd(); void init_winbingo(); void init_zulu(); @@ -185,6 +186,7 @@ private: }; static const decryption_info astoneag_table; + static const decryption_info dinodino_table; static const decryption_info magibombd_table; static const decryption_info winbingo_table; static const decryption_info zulu_table; @@ -1757,6 +1759,49 @@ void astoneage_state::init_zulu() rom[0x006/2] = 0x0400; } +const astoneage_state::decryption_info astoneage_state::dinodino_table = { + { + { + { 8, 11, 9 }, + { + { { 7, 5, 4, 6, 0, 3, 2, 1 }, 0x00 }, + { { 1, 4, 6, 0, 2, 5, 3, 7 }, 0xd0 }, + { { 1, 7, 4, 3, 6, 5, 0, 2 }, 0x88 }, + { { 6, 5, 2, 3, 7, 1, 0, 4 }, 0xd1 }, + { { 6, 1, 7, 2, 4, 0, 3, 5 }, 0x64 }, + { { 1, 7, 2, 6, 5, 4, 3, 0 }, 0x83 }, + { { 6, 7, 4, 2, 5, 0, 1, 3 }, 0x81 }, + { { 7, 5, 1, 0, 2, 4, 6, 3 }, 0xea }, + } + }, + { + { 12, 11, 10 }, + { + { { 6, 5, 4, 3, 2, 1, 0, 7 }, 0x90 }, + { { 2, 4, 0, 7, 5, 6, 3, 1 }, 0x32 }, + { { 7, 1, 0, 6, 5, 2, 3, 4 }, 0xa9 }, + { { 2, 0, 3, 5, 1, 4, 6, 7 }, 0xa2 }, + { { 3, 0, 6, 5, 2, 1, 4, 7 }, 0x02 }, + { { 0, 1, 6, 4, 5, 2, 7, 3 }, 0x30 }, + { { 3, 5, 2, 7, 6, 1, 4, 0 }, 0x0a }, + { { 0, 6, 4, 2, 7, 3, 1, 5 }, 0x81 }, + } + }, + }, + { 12, 9, 8, 10, 11, 7, 2, 6, 3, 5, 4 } // 3, 4, 5, 6 ok +}; + +void astoneage_state::init_dinodino() +{ + decrypt_rom(dinodino_table); + + // TODO: There's more stuff happening for addresses < 0x400... + // override reset vector for now + u16 *rom = (u16 *)memregion("maincpu")->base(); + rom[0x004/2] = 0x0000; + rom[0x006/2] = 0x0446; +} + void magibomb_state::init_magibomb() { // decrypt data @@ -1808,11 +1853,11 @@ GAME( 2001, magibombc, magibomb, magibombb, magibomb, magibomb_state, init_mag GAME( 2001?, magibombe, magibomb, magibombb, magibomb, magibomb_state, init_magibomb, ROT0, "Astro Corp.", "Magic Bomb (Ver. A3.1A)", MACHINE_NOT_WORKING | MACHINE_SUPPORTS_SAVE ) // Heavier encryption -GAME( 2003?, dinodino, 0, skilldrp, skilldrp, astrocorp_state, empty_init, ROT0, "Astro Corp.", "Dino Dino", MACHINE_NOT_WORKING | MACHINE_SUPPORTS_SAVE ) -GAME( 2004?, astoneag, 0, astoneage, skilldrp, astoneage_state, init_astoneage, ROT0, "Astro Corp.", "Stone Age (Astro, Ver. ENG.03.A)", MACHINE_NOT_WORKING | MACHINE_SUPPORTS_SAVE ) +GAME( 2005, dinodino, 0, magibombd, skilldrp, astoneage_state, init_dinodino, ROT0, "Astro Corp.", "Dino Dino (Ver. A1.1)", MACHINE_NOT_WORKING | MACHINE_SUPPORTS_SAVE ) // 13/01.2005 10:59 +GAME( 2005, astoneag, 0, astoneage, skilldrp, astoneage_state, init_astoneage, ROT0, "Astro Corp.", "Stone Age (Astro, Ver. ENG.03.A)", MACHINE_NOT_WORKING | MACHINE_SUPPORTS_SAVE ) // 2005/02/21 GAME( 2005, magibombd, magibomb, magibombd, skilldrp, astoneage_state, init_magibombd, ROT0, "Astro Corp.", "Magic Bomb (Ver. AA.72D, 14/11/05)", MACHINE_NOT_WORKING | MACHINE_SUPPORTS_SAVE ) -GAME( 2006, winbingo, 0, astoneage, skilldrp, astoneage_state, init_winbingo, ROT0, "Astro Corp.", "Win Win Bingo (set 1)", MACHINE_NOT_WORKING | MACHINE_SUPPORTS_SAVE ) // 15:47:48 Feb 23 2006 -GAME( 2006, winbingoa, winbingo, astoneage, skilldrp, astoneage_state, init_winbingo, ROT0, "Astro Corp.", "Win Win Bingo (set 2)", MACHINE_NOT_WORKING | MACHINE_SUPPORTS_SAVE ) // 11:02:07 May 11 2006 -GAME( 2005, hacher, winbingo, astoneage, skilldrp, astoneage_state, init_winbingo, ROT0, "bootleg (Gametron)", "Hacher (hack of Win Win Bingo)", MACHINE_NOT_WORKING | MACHINE_SUPPORTS_SAVE ) // 14:25:46 Mar 10 2005 -GAME( 2004, zulu, 0, astoneage, skilldrp, astoneage_state, init_zulu, ROT0, "Astro Corp.", "Zulu (Ver. ZO.02.D)", MACHINE_NOT_WORKING | MACHINE_SUPPORTS_SAVE ) // 10:53:44 Aug 27 2004 +GAME( 2006, winbingo, 0, magibombd, skilldrp, astoneage_state, init_winbingo, ROT0, "Astro Corp.", "Win Win Bingo (set 1)", MACHINE_NOT_WORKING | MACHINE_SUPPORTS_SAVE ) // 15:47:48 Feb 23 2006 +GAME( 2006, winbingoa, winbingo, magibombd, skilldrp, astoneage_state, init_winbingo, ROT0, "Astro Corp.", "Win Win Bingo (set 2)", MACHINE_NOT_WORKING | MACHINE_SUPPORTS_SAVE ) // 11:02:07 May 11 2006 +GAME( 2005, hacher, winbingo, magibombd, skilldrp, astoneage_state, init_winbingo, ROT0, "bootleg (Gametron)", "Hacher (hack of Win Win Bingo)", MACHINE_NOT_WORKING | MACHINE_SUPPORTS_SAVE ) // 14:25:46 Mar 10 2005 +GAME( 2004, zulu, 0, magibombd, skilldrp, astoneage_state, init_zulu, ROT0, "Astro Corp.", "Zulu (Ver. ZO.02.D)", MACHINE_NOT_WORKING | MACHINE_SUPPORTS_SAVE ) // 10:53:44 Aug 27 2004 GAME( 2007?, westvent, 0, skilldrp, skilldrp, astrocorp_state, empty_init, ROT0, "Astro Corp.", "Western Venture (Ver. AA.02.D)", MACHINE_NOT_WORKING | MACHINE_SUPPORTS_SAVE ) -- cgit v1.2.3