diff options
Diffstat (limited to 'src/devices/machine/k056230.cpp')
-rw-r--r-- | src/devices/machine/k056230.cpp | 170 |
1 files changed, 120 insertions, 50 deletions
diff --git a/src/devices/machine/k056230.cpp b/src/devices/machine/k056230.cpp index 68f1a718197..487a26da35d 100644 --- a/src/devices/machine/k056230.cpp +++ b/src/devices/machine/k056230.cpp @@ -1,6 +1,6 @@ // license:BSD-3-Clause // copyright-holders:Fabio Priuli -/*************************************************************************** +/************************************************************************************************** Konami IC 056230 (LANC) @@ -12,9 +12,11 @@ Device Notes: -PAL(056787A) for zr107.cpp, gticlub.cpp and thunderh's I/O board -HYC2485S RS485 transceiver -TODO: nearly everything +TODO: +- nearly everything, currently a wrapper to make games happy and don't fail POSTs +- LANC part name for konami/viper.cpp -***************************************************************************/ +**************************************************************************************************/ #include "emu.h" @@ -31,58 +33,53 @@ TODO: nearly everything #include "logmacro.h" DEFINE_DEVICE_TYPE(K056230, k056230_device, "k056230", "K056230 LANC") +DEFINE_DEVICE_TYPE(K056230_VIPER, k056230_viper_device, "k056230_viper", "Konami Viper LANC") - -k056230_device::k056230_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) - : device_t(mconfig, K056230, tag, owner, clock) +k056230_device::k056230_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock) + : device_t(mconfig, type, tag, owner, clock) , m_ram(*this, "lanc_ram", 0x800U * 4, ENDIANNESS_BIG) , m_irq_cb(*this) { } -void k056230_device::device_start() +k056230_device::k056230_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) + : k056230_device(mconfig, K056230, tag, owner, clock) { - m_irq_state = CLEAR_LINE; +} +void k056230_device::device_start() +{ save_item(NAME(m_irq_state)); + save_item(NAME(m_status)); } -u8 k056230_device::regs_r(offs_t offset) +void k056230_device::device_reset() { - u8 data = 0; - - switch (offset) - { - case 0: // Status register - data = 0x08; - LOGMASKED(LOG_REG_READS, "%s: regs_r: Status Register: %02x\n", machine().describe_context(), data); - break; - - case 1: // CRC Error register - data = 0x00; - LOGMASKED(LOG_REG_READS, "%s: regs_r: CRC Error Register: %02x\n", machine().describe_context(), data); - break; - - default: - LOGMASKED(LOG_REG_READS, "%s: regs_r: Unknown Register [%02x]: %02x\n", machine().describe_context(), offset, data); - break; - } - - return data; + m_irq_state = CLEAR_LINE; + m_status = 0x08; } -void k056230_device::regs_w(offs_t offset, u8 data) +void k056230_device::regs_map(address_map &map) { - switch (offset) - { - case 0: // Mode register - LOGMASKED(LOG_REG_WRITES, "%s: regs_w: Mode Register = %02x\n", machine().describe_context(), data); - break; - - case 1: // Control register - { - LOGMASKED(LOG_REG_WRITES, "%s: regs_w: Control Register = %02x\n", machine().describe_context(), data); - // TODO: This is a literal translation of the previous device behaviour, and seems pretty likely to be incorrect. + map(0x00, 0x00).lrw8( + NAME([this] (offs_t offset) { + LOGMASKED(LOG_REG_READS, "%s: Status Register read %02x\n", machine().describe_context(), m_status); + return m_status; + }), + NAME([this] (offs_t offset, u8 data) { + LOGMASKED(LOG_REG_WRITES, "%s: Mode Register read %02x\n", machine().describe_context(), data); + }) + ), + map(0x01, 0x01).lrw8( + NAME([this] (offs_t offset) { + const u8 res = 0x00; + LOGMASKED(LOG_REG_READS, "%s: CRC Error Register read %02x\n", machine().describe_context(), res); + return res; + }), + NAME([this] (offs_t offset, u8 data) { + LOGMASKED(LOG_REG_WRITES, "%s: Control Register write %02x\n", machine().describe_context(), data); + // TODO: This is a literal translation of the previous device behaviour, and is incorrect. + // Namely it can't possibly ping irq state on the fly, needs some transaction from the receiver. const int old_state = m_irq_state; if (BIT(data, 5)) { @@ -98,17 +95,13 @@ void k056230_device::regs_w(offs_t offset, u8 data) { m_irq_cb(m_irq_state); } - break; - } - - case 2: // Sub ID register + }) + ); + map(0x02, 0x02).lw8( + NAME([this] (offs_t offset, u8 data) { LOGMASKED(LOG_REG_WRITES, "%s: regs_w: Sub ID Register = %02x\n", machine().describe_context(), data); - break; - - default: - LOGMASKED(LOG_REG_WRITES | LOG_UNKNOWNS, "%s: regs_w: Unknown Register [%02x] = %02x\n", machine().describe_context(), offset, data); - break; - } + }) + ); } u32 k056230_device::ram_r(offs_t offset, u32 mem_mask) @@ -125,3 +118,80 @@ void k056230_device::ram_w(offs_t offset, u32 data, u32 mem_mask) LOGMASKED(LOG_RAM_WRITES, "%s: Network RAM write [%04x (%03x)] = %08x & %08x\n", machine().describe_context(), offset << 2, (offset & 0x7ff) << 2, data, mem_mask); COMBINE_DATA(&lanc_ram[offset & 0x7ff]); } + +/**************************************** + * + * konami/viper.cpp superset overrides + * + ***************************************/ + +k056230_viper_device::k056230_viper_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) + : k056230_device(mconfig, K056230_VIPER, tag, owner, clock) +{ +} + +void k056230_viper_device::device_reset() +{ + k056230_device::device_reset(); + m_control = 0; + m_irq_enable = false; + m_unk[0] = m_unk[1] = 0; +} + +void k056230_viper_device::regs_map(address_map &map) +{ + map(0x00, 0x00).lw8( + NAME([this] (offs_t offset, u8 data) { + LOGMASKED(LOG_REG_WRITES, "%s: network_id_w = %02x\n", machine().describe_context(), data); + }) + ); + map(0x01, 0x01).lw8( + NAME([this] (offs_t offset, u8 data) { + // HACK: more irq bad juju + if (!BIT(data, 0)) + { + m_status = 0; + m_irq_state = CLEAR_LINE; + } + else + { + if(m_irq_enable) + m_irq_state = ASSERT_LINE; + } + + if (BIT(data, 3)) + m_status = 0x10; + + m_irq_cb(m_irq_state); + + // TODO: is this readback-able? + m_control = data; + LOGMASKED(LOG_REG_WRITES, "%s: control_w: %02x\n", machine().describe_context(), m_control); + }) + ); + map(0x02, 0x02).lr8( + NAME([this] (offs_t offset) { + LOGMASKED(LOG_REG_READS, "%s: status_r: %02x\n", machine().describe_context(), m_status); + return m_status; + }) + ); + // TODO: unknown regs + map(0x03, 0x04).lrw8( + NAME([this] (offs_t offset) { + LOGMASKED(LOG_REG_READS, "%s: unk%d_r\n", machine().describe_context(), offset + 3, m_unk[offset]); + return m_unk[offset]; + }), + NAME([this] (offs_t offset, u8 data) { + LOGMASKED(LOG_REG_WRITES, "%s: unk%d_w %02x\n", machine().describe_context(), offset + 3, m_unk[offset], data); + m_unk[offset] = data; + }) + ); + map(0x05, 0x05).lw8( + NAME([this] (offs_t offset, u8 data) { + // TODO: should sync if an irq is already there + m_irq_enable = bool(BIT(data, 0)); + LOGMASKED(LOG_REG_WRITES, "%s: irq enable: %02x\n", machine().describe_context(), data); + }) + ); +} + |