diff options
Diffstat (limited to 'trunk/src/emu/machine/k056230.c')
-rw-r--r-- | trunk/src/emu/machine/k056230.c | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/trunk/src/emu/machine/k056230.c b/trunk/src/emu/machine/k056230.c new file mode 100644 index 00000000000..4a5ead590b0 --- /dev/null +++ b/trunk/src/emu/machine/k056230.c @@ -0,0 +1,148 @@ +/*************************************************************************** + + Konami IC 056230 (LANC) + +***************************************************************************/ + +#include "emu.h" +#include "k056230.h" +#include "devhelpr.h" + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +// device type definition +const device_type K056230 = &device_creator<k056230_device>; + +//------------------------------------------------- +// k056230_device - constructor +//------------------------------------------------- + +k056230_device::k056230_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) + : device_t(mconfig, K056230, "Konami 056230", tag, owner, clock) +{ + +} + + +//------------------------------------------------- +// device_config_complete - perform any +// operations now that the configuration is +// complete +//------------------------------------------------- + +void k056230_device::device_config_complete() +{ + // inherit a copy of the static data + const k056230_interface *intf = reinterpret_cast<const k056230_interface *>(static_config()); + if (intf != NULL) + { + *static_cast<k056230_interface *>(this) = *intf; + } + + // or initialize to defaults if none provided + else + { + m_cpu_tag = NULL; + m_is_thunderh = false; + } +} + + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void k056230_device::device_start() +{ + if(m_cpu_tag) + { + m_cpu = machine().device(m_cpu_tag); + } + else + { + m_cpu = NULL; + } + + m_ram = auto_alloc_array(machine(), UINT32, 0x2000); + + save_pointer(NAME(m_ram), 0x2000); +} + + +READ8_DEVICE_HANDLER_TRAMPOLINE(k056230, k056230_r) +{ + switch (offset) + { + case 0: // Status register + { + return 0x08; + } + } + +// mame_printf_debug("k056230_r: %d at %08X\n", offset, cpu_get_pc(&space->device())); + + return 0; +} + +TIMER_CALLBACK( k056230_device::network_irq_clear_callback ) +{ + reinterpret_cast<k056230_device*>(ptr)->network_irq_clear(); +} + +void k056230_device::network_irq_clear() +{ + if(m_cpu) + { + device_set_input_line(m_cpu, INPUT_LINE_IRQ2, CLEAR_LINE); + } +} + + +WRITE8_DEVICE_HANDLER_TRAMPOLINE(k056230, k056230_w) +{ + switch(offset) + { + case 0: // Mode register + { + break; + } + case 1: // Control register + { + if(data & 0x20) + { + // Thunder Hurricane breaks otherwise... + if(!m_is_thunderh) + { + if(m_cpu) + { + device_set_input_line(m_cpu, INPUT_LINE_IRQ2, ASSERT_LINE); + } + machine().scheduler().timer_set(attotime::from_usec(10), FUNC(network_irq_clear_callback), 0, (void*)this); + } + } +// else +// device_set_input_line(k056230->cpu, INPUT_LINE_IRQ2, CLEAR_LINE); + break; + } + case 2: // Sub ID register + { + break; + } + } +// mame_printf_debug("k056230_w: %d, %02X at %08X\n", offset, data, cpu_get_pc(&space->device())); +} + +READ32_DEVICE_HANDLER_TRAMPOLINE(k056230, lanc_ram_r) +{ + //mame_printf_debug("LANC_RAM_r: %08X, %08X at %08X\n", offset, mem_mask, cpu_get_pc(&space->device())); + return m_ram[offset & 0x7ff]; +} + +WRITE32_DEVICE_HANDLER_TRAMPOLINE(k056230, lanc_ram_w) +{ + //mame_printf_debug("LANC_RAM_w: %08X, %08X, %08X at %08X\n", data, offset, mem_mask, cpu_get_pc(&space->device())); + COMBINE_DATA(m_ram + (offset & 0x7ff)); +} |