diff options
Diffstat (limited to 'src/devices/bus/neogeo/prot_fatfury2.cpp')
-rw-r--r-- | src/devices/bus/neogeo/prot_fatfury2.cpp | 86 |
1 files changed, 24 insertions, 62 deletions
diff --git a/src/devices/bus/neogeo/prot_fatfury2.cpp b/src/devices/bus/neogeo/prot_fatfury2.cpp index bd7af9247db..c8e7151e6e8 100644 --- a/src/devices/bus/neogeo/prot_fatfury2.cpp +++ b/src/devices/bus/neogeo/prot_fatfury2.cpp @@ -11,14 +11,18 @@ DEFINE_DEVICE_TYPE(NG_FATFURY2_PROT, fatfury2_prot_device, "ng_fatfury_prot", "N fatfury2_prot_device::fatfury2_prot_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : device_t(mconfig, NG_FATFURY2_PROT, tag, owner, clock), - m_prot_data(0) + m_pro_ct0(*this, "pro_ct0") { } +void fatfury2_prot_device::device_add_mconfig(machine_config &config) +{ + ALPHA_8921(config, m_pro_ct0, 0); // PRO-CT0 or SNK-9201 +} + void fatfury2_prot_device::device_start() { - save_item(NAME(m_prot_data)); } void fatfury2_prot_device::device_reset() @@ -33,69 +37,27 @@ void fatfury2_prot_device::device_reset() /* 0x2xxxxx range. There are several checks all around the code. */ uint16_t fatfury2_prot_device::protection_r(offs_t offset) { - uint16_t res = m_prot_data >> 24; - - switch (offset) - { - case 0x55550/2: - case 0xffff0/2: - case 0x00000/2: - case 0xff000/2: - case 0x36000/2: - case 0x36008/2: - return res; - - case 0x36004/2: - case 0x3600c/2: - return ((res & 0xf0) >> 4) | ((res & 0x0f) << 4); - - default: - logerror("unknown protection read at %s, offset %08x\n", machine().describe_context(), offset << 1); - return 0; - } + m_pro_ct0->even_w(BIT(offset, 1)); + m_pro_ct0->h_w(BIT(offset, 2)); + u8 gad = m_pro_ct0->gad_r(); + u8 gbd = m_pro_ct0->gbd_r(); + return (BIT(gbd, 0, 2) << 6) | (BIT(gbd, 2, 2) << 4) | (BIT(gad, 0, 2) << 6) | (BIT(gad, 2, 2) << 4); } void fatfury2_prot_device::protection_w(offs_t offset, uint16_t data) { - switch (offset) - { - case 0x11112/2: /* data == 0x1111; expects 0xff000000 back */ - m_prot_data = 0xff000000; - break; - - case 0x33332/2: /* data == 0x3333; expects 0x0000ffff back */ - m_prot_data = 0x0000ffff; - break; - - case 0x44442/2: /* data == 0x4444; expects 0x00ff0000 back */ - m_prot_data = 0x00ff0000; - break; - - case 0x55552/2: /* data == 0x5555; read back from 55550, ffff0, 00000, ff000 */ - m_prot_data = 0xff00ff00; - break; - - case 0x56782/2: /* data == 0x1234; read back from 36000 *or* 36004 */ - m_prot_data = 0xf05a3601; - break; - - case 0x42812/2: /* data == 0x1824; read back from 36008 *or* 3600c */ - m_prot_data = 0x81422418; - break; - - case 0x55550/2: - case 0xffff0/2: - case 0xff000/2: - case 0x36000/2: - case 0x36004/2: - case 0x36008/2: - case 0x3600c/2: - m_prot_data <<= 8; - break; - - default: - logerror("unknown protection write at %s, offset %08x, data %02x\n", machine().describe_context(), offset, data); - break; - } + // /PORTOEL connected into PRO-CT0 CLK pin + m_pro_ct0->clk_w(true); + + m_pro_ct0->load_w(BIT(offset, 0)); // A1 + m_pro_ct0->even_w(BIT(offset, 1)); // A2 + m_pro_ct0->h_w(BIT(offset, 2)); // A3 + + // C16-31 = A4-A19, C0-C15 = D0-D15 + m_pro_ct0->c_w((u32(bitswap<16>(BIT(offset, 3, 16), 15, 13, 11, 9, 14, 12, 10, 8, 7, 5, 3, 1, 6, 4, 2, 0)) << 16) | + bitswap<16>(data, 15, 13, 11, 9, 14, 12, 10, 8, 7, 5, 3, 1, 6, 4, 2, 0)); + + // release /PORTOEL + m_pro_ct0->clk_w(false); } |