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Don't need this switch case (nw)

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This commit is contained in:
angelosa 2018-04-25 07:14:18 +02:00
parent 6f4314a305
commit 96b93c78f7
1 changed files with 7 additions and 23 deletions
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30
src/mame/machine/nb1412m2.cpp
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@ -229,29 +229,13 @@ READ8_MEMBER( nb1412m2_device::rom_decrypt_r )
{
uint8_t prot_adj;
// TODO: provided by commands 0x35 & 0x36 (maybe 0x32 too)
switch(m_data[m_adj_address])
{
// common, most games uses this
case 0xff:
prot_adj = 0x44;
break;
// Mighty Guy specific
case 0x86: // SFXs
prot_adj = 0xbd;
break;
case 0x94: // BGM
prot_adj = 0xaf; // 0xef
break;
case 0x00: // DAC
prot_adj = 0x43; // matches address 0x840 at POST (first valid 8-bit data for DAC)
//machine().debug_break();
break;
default:
prot_adj = 0;
popmessage("nb1412m2: prot adjust %02x, contact MAMEdev",m_data[m_adj_address]);
break;
}
// all games but Mighty Guy uses this form as protection:
// 0xff: -> 0x44
// Mighty Guy variants
// 0x86: SFXs -> 0xbd
// 0x94: BGM -> 0xaf
// 0x00: DAC -> 0x43
prot_adj = (0x43 - m_data[m_adj_address]) & 0xff;
// printf("%02x %04x %04x %02x\n",m_data[m_adj_address],m_rom_address,m_adj_address,m_rom_op);