Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-20 23:42:22 +03:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

jungleyo.cpp: corrections to the preliminary decryption routine

Browse Source
This commit is contained in:
Ivan Vangelista 2020-10-20 20:18:43 +02:00
parent 993da932f2
commit f714c4bc0c
1 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/mame/drivers/jungleyo.cpp
View File

@ -151,8 +151,8 @@ void jungleyo_state::jungleyo(machine_config &config)
ROM_START( jungleyo )
ROM_REGION( 0x40000, "maincpu", 0 ) // 68000 code, encrypted
ROM_LOAD16_BYTE( "jungle_=record=_rom3_vi3.02.u15", 0x00001, 0x20000, CRC(7c9f431e) SHA1(fb3f90c4fe59c938f36b30c5fa3af227031e7d7a) )
ROM_LOAD16_BYTE( "jungle_=record=_rom2_vi3.02.u14", 0x00000, 0x20000, CRC(f6a71260) SHA1(8e48cbb9d701ad968540244396820359afe97c28) )
ROM_LOAD16_BYTE( "jungle_=record=_rom3_vi3.02.u15", 0x00000, 0x20000, CRC(7c9f431e) SHA1(fb3f90c4fe59c938f36b30c5fa3af227031e7d7a) )
ROM_LOAD16_BYTE( "jungle_=record=_rom2_vi3.02.u14", 0x00001, 0x20000, CRC(f6a71260) SHA1(8e48cbb9d701ad968540244396820359afe97c28) )
ROM_REGION( 0x040000, "oki", 0 )
ROM_LOAD( "jungle_rom1.u99", 0x00000, 0x40000, CRC(05ef5b85) SHA1(ca7584646271c6adc7880eca5cf43a412340c522) )
@ -173,7 +173,7 @@ void jungleyo_state::init_jungleyo() // TODO: just a start, gives correct (?) st
uint16_t *src = (uint16_t *)memregion("maincpu")->base();
for (int i = 0x00000; i < 0x40000 / 2; i++)
src[i] = bitswap<16>(src[i] ^ 0xff00, 14, 12, 10, 15, 11, 8, 9, 13, 0, 2, 7, 3, 1, 6, 4, 5); // TODO: possibly the bitswap and XOR are applied per byte and not per word, verify when more is discovered
src[i] = bitswap<16>(src[i] ^ 0x00ff, 8, 10, 15, 11, 9, 14, 12, 13, 6, 4, 2, 7, 3, 0, 1, 5); // TODO: possibly the bitswap and XOR are applied per byte and not per word, verify when more is discovered
/*char filename[256];
sprintf(filename,"p_decrypted_%s", machine().system().name);