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4roses: Decrypt main part of program (nw)

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This commit is contained in:
AJR 2018-03-29 21:58:46 -04:00
parent a24c555444
commit 176e322b47
1 changed files with 14 additions and 5 deletions
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19
src/mame/drivers/4roses.cpp
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@ -211,9 +211,13 @@ public:
void _4roses_state::_4roses_map(address_map &map)
{
map(0x0000, 0x07ff).ram(); // AM_SHARE("nvram")
map(0x6000, 0x6fff).ram().w(this, FUNC(_4roses_state::funworld_videoram_w)).share("videoram");
map(0x7000, 0x7fff).ram().w(this, FUNC(_4roses_state::funworld_colorram_w)).share("colorram");
map(0x8000, 0xffff).rom();
map(0x0c00, 0x0c00).r("ay8910", FUNC(ay8910_device::data_r));
map(0x0c00, 0x0c01).w("ay8910", FUNC(ay8910_device::address_data_w));
map(0x0e00, 0x0e00).w("crtc", FUNC(mc6845_device::address_w));
map(0x0e01, 0x0e01).rw("crtc", FUNC(mc6845_device::register_r), FUNC(mc6845_device::register_w));
map(0x4000, 0x4fff).ram().w(this, FUNC(_4roses_state::funworld_videoram_w)).share("videoram");
map(0x5000, 0x5fff).ram().w(this, FUNC(_4roses_state::funworld_colorram_w)).share("colorram");
map(0x6000, 0xffff).rom().region("maincpu", 0x6000);
}
/*
@ -360,7 +364,6 @@ MACHINE_CONFIG_START(_4roses_state::_4roses)
/* basic machine hardware */
MCFG_CPU_ADD("maincpu", M65C02, MASTER_CLOCK/8) /* 2MHz, guess */
MCFG_CPU_PROGRAM_MAP(_4roses_map)
MCFG_CPU_VBLANK_INT_DRIVER("screen", _4roses_state, nmi_line_pulse)
// MCFG_NVRAM_ADD_0FILL("nvram")
@ -380,7 +383,10 @@ MACHINE_CONFIG_START(_4roses_state::_4roses)
MCFG_PALETTE_INIT_OWNER(_4roses_state,funworld)
MCFG_VIDEO_START_OVERRIDE(_4roses_state,funworld)
// MCFG_MC6845_ADD("crtc", MC6845, "screen", MASTER_CLOCK/8) /* 2MHz, guess */
MCFG_MC6845_ADD("crtc", MC6845, "screen", MASTER_CLOCK/8) /* 2MHz, guess */
MCFG_MC6845_SHOW_BORDER_AREA(false)
MCFG_MC6845_CHAR_WIDTH(4)
//MCFG_MC6845_OUT_VSYNC_CB(INPUTLINE("maincpu", INPUT_LINE_NMI))
/* sound hardware */
MCFG_SPEAKER_STANDARD_MONO("mono")
@ -461,6 +467,9 @@ ROM_END
DRIVER_INIT_MEMBER(_4roses_state,4roses)
{
uint8_t *rom = memregion("maincpu")->base();
for (offs_t addr = 0x8000; addr < 0x10000; addr++)
rom[addr] = bitswap<8>(rom[addr] ^ 0xca, 6, 5, 4, 3, 2, 1, 0, 7);
}