diff options
Diffstat (limited to 'src/mess/drivers/gamate.c')
-rw-r--r-- | src/mess/drivers/gamate.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/src/mess/drivers/gamate.c b/src/mess/drivers/gamate.c index c246c790ea7..cc18fa3ba98 100644 --- a/src/mess/drivers/gamate.c +++ b/src/mess/drivers/gamate.c @@ -85,6 +85,7 @@ private: emu_timer *timer1; emu_timer *timer2; UINT8 bank_multi; + UINT8 *m_cart_ptr; }; WRITE8_MEMBER( gamate_state::gamate_cart_protection_w ) @@ -96,7 +97,7 @@ WRITE8_MEMBER( gamate_state::gamate_cart_protection_w ) card_protection.failed= card_protection.failed || ((card_protection.cartridge_byte&0x80)!=0) != ((data&4)!=0); card_protection.bit_shifter++; if (card_protection.bit_shifter>=8) { - card_protection.cartridge_byte=m_cart->get_rom_base()[card_protection.address++]; + card_protection.cartridge_byte=m_cart_ptr[card_protection.address++]; card_protection.bit_shifter=0; } break; @@ -107,7 +108,7 @@ READ8_MEMBER( gamate_state::gamate_cart_protection_r ) UINT8 ret=1; if (card_protection.bit_shifter==7 && card_protection.unprotected) { - ret=m_cart->get_rom_base()[bank_multi*0x4000]; + ret=m_cart_ptr[bank_multi*0x4000]; } else { card_protection.bit_shifter++; if (card_protection.bit_shifter==8) { @@ -132,7 +133,7 @@ WRITE8_MEMBER( gamate_state::protection_reset ) // writes 0x20 card_protection.address=0x6005-0x6001; card_protection.bit_shifter=0; - card_protection.cartridge_byte=m_cart->get_rom_base()[card_protection.address++];//m_cart_rom[card_protection.address++]; + card_protection.cartridge_byte=m_cart_ptr[card_protection.address++];//m_cart_rom[card_protection.address++]; card_protection.failed=false; card_protection.unprotected=false; } @@ -172,12 +173,12 @@ WRITE8_MEMBER( gamate_state::gamate_video_w ) WRITE8_MEMBER( gamate_state::cart_bankswitchmulti_w ) { bank_multi=data; - membank("bankmulti")->set_base(m_cart->get_rom_base()+0x4000*data+1); + membank("bankmulti")->set_base(m_cart_ptr+0x4000*data+1); } WRITE8_MEMBER( gamate_state::cart_bankswitch_w ) { - membank("bank")->set_base(m_cart->get_rom_base()+0x4000*data); + membank("bank")->set_base(m_cart_ptr+0x4000*data); } READ8_MEMBER( gamate_state::gamate_video_r ) @@ -329,8 +330,10 @@ DRIVER_INIT_MEMBER(gamate_state,gamate) void gamate_state::machine_start() { + m_cart_ptr = memregion("maincpu")->base() + 0x6000; if (m_cart->exists()) { // m_maincpu->space(AS_PROGRAM).install_read_handler(0x6000, 0x6000, READ8_DELEGATE(gamate_state, gamate_cart_protection_r)); + m_cart_ptr = m_cart->get_rom_base(); membank("bankmulti")->set_base(m_cart->get_rom_base()+1); membank("bank")->set_base(m_cart->get_rom_base()+0x4000); // bankswitched games in reality no offset } |