diff options
Diffstat (limited to 'src/devices/cpu/h8/gt913.cpp')
-rw-r--r-- | src/devices/cpu/h8/gt913.cpp | 123 |
1 files changed, 63 insertions, 60 deletions
diff --git a/src/devices/cpu/h8/gt913.cpp b/src/devices/cpu/h8/gt913.cpp index 6819ecb400f..e32ad3f679e 100644 --- a/src/devices/cpu/h8/gt913.cpp +++ b/src/devices/cpu/h8/gt913.cpp @@ -1,6 +1,7 @@ // license:BSD-3-Clause // copyright-holders:Devin Acker /*************************************************************************** + Casio GT913 (uPD913) This chip powers several late-90s/early-2000s Casio keyboards. @@ -25,19 +26,18 @@ DEFINE_DEVICE_TYPE(GT913, gt913_device, "gt913", "Casio GT913F") -gt913_device::gt913_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : +gt913_device::gt913_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) : h8_device(mconfig, GT913, tag, owner, clock, address_map_constructor(FUNC(gt913_device::map), this)), device_mixer_interface(mconfig, *this, 2), m_rom(*this, DEVICE_SELF), - data_config("data", ENDIANNESS_BIG, 16, 22, 0), + m_data_config("data", ENDIANNESS_BIG, 16, 22, 0), m_intc(*this, "intc"), m_sound(*this, "gt_sound"), m_kbd(*this, "kbd"), m_io_hle(*this, "io_hle"), - m_sci(*this, "sci%u", 0), m_port(*this, "port%u", 1) { - has_hc = false; + m_has_hc = false; } std::unique_ptr<util::disasm_interface> gt913_device::create_disassembler() @@ -50,6 +50,12 @@ void gt913_device::map(address_map &map) map(0x0000, 0x7fff).rom(); map(0x8000, 0xbfff).rw(FUNC(gt913_device::data_r), FUNC(gt913_device::data_w)); map(0xc000, 0xf7ff).rom(); + + /* ctk530 writes here to latch LED matrix data, which generates an active high strobe on pin 99 (PLE/P16) + there's otherwise no external address decoding (or the usual read/write strobes) used for the LED latches. + just treat as a 16-bit write-only port for now */ + map(0xe000, 0xe001).lw16(NAME([this](u16 data) { do_write_port(h8_device::PORT_4, data, ~0); })); + map(0xfac0, 0xffbf).ram(); /* ffc0-ffcb: sound */ @@ -82,7 +88,7 @@ void gt913_device::map(address_map &map) map(0xfff0, 0xfff0).rw(m_port[0], FUNC(h8_port_device::ddr_r), FUNC(h8_port_device::ddr_w)); // port 2 DDR - ctk601 and gz70sp both seem to use only bit 0 to indicate either all inputs or all outputs // map(0xfff1, 0xfff1).rw(m_port[1], FUNC(h8_port_device::ddr_r), FUNC(h8_port_device::ddr_w)); - map(0xfff1, 0xfff1).lw8(NAME([this](uint8_t data) { m_port[1]->ddr_w(BIT(data, 0) ? 0xff : 0x00); })); + map(0xfff1, 0xfff1).lw8(NAME([this](u8 data) { m_port[1]->ddr_w(BIT(data, 0) ? 0xff : 0x00); })); map(0xfff2, 0xfff2).rw(m_port[0], FUNC(h8_port_device::port_r), FUNC(h8_port_device::dr_w)); map(0xfff3, 0xfff3).rw(m_port[1], FUNC(h8_port_device::port_r), FUNC(h8_port_device::dr_w)); map(0xfff4, 0xfff4).rw(m_port[2], FUNC(h8_port_device::port_r), FUNC(h8_port_device::dr_w)); @@ -91,7 +97,7 @@ void gt913_device::map(address_map &map) void gt913_device::device_add_mconfig(machine_config &config) { - GT913_INTC(config, "intc"); + GT913_INTC(config, m_intc, *this); GT913_SOUND(config, m_sound, DERIVED_CLOCK(1, 1)); m_sound->set_device_rom_tag(m_rom); @@ -99,24 +105,23 @@ void gt913_device::device_add_mconfig(machine_config &config) m_sound->add_route(1, *this, 1.0, AUTO_ALLOC_INPUT, 1); GT913_KBD_HLE(config, m_kbd, 0); - m_kbd->irq_cb().set([this] (int val) - { - if (val) - m_intc->internal_interrupt(5); - else - m_intc->clear_interrupt(5); - }); - GT913_IO_HLE(config, m_io_hle, "intc", 6, 7); - H8_SCI(config, m_sci[0], "intc", 8, 9, 10, 0); - H8_SCI(config, m_sci[1], "intc", 11, 12, 13, 0); - - H8_PORT(config, m_port[0], h8_device::PORT_1, 0x00, 0x00); - H8_PORT(config, m_port[1], h8_device::PORT_2, 0x00, 0x00); - H8_PORT(config, m_port[2], h8_device::PORT_3, 0x00, 0x00); + m_kbd->irq_cb().set([this] (int val) { + if(val) + m_intc->internal_interrupt(5); + else + m_intc->clear_interrupt(5); + }); + GT913_IO_HLE(config, m_io_hle, *this, m_intc, 6, 7); + H8_SCI(config, m_sci[0], 0, *this, m_intc, 8, 9, 10, 0); + H8_SCI(config, m_sci[1], 1, *this, m_intc, 11, 12, 13, 0); + + H8_PORT(config, m_port[0], *this, h8_device::PORT_1, 0x00, 0x00); + H8_PORT(config, m_port[1], *this, h8_device::PORT_2, 0x00, 0x00); + H8_PORT(config, m_port[2], *this, h8_device::PORT_3, 0x00, 0x00); } -void gt913_device::uart_rate_w(uint8_t data) +void gt913_device::uart_rate_w(u8 data) { // TODO: how is SCI1 baud rate actually selected? // gz70sp writes 0x7e to ffe4 to select 31250 baud for MIDI, which doesn't seem right @@ -124,7 +129,7 @@ void gt913_device::uart_rate_w(uint8_t data) m_sci[1]->brr_w(data >> 2); } -void gt913_device::uart_control_w(offs_t offset, uint8_t data) +void gt913_device::uart_control_w(offs_t offset, u8 data) { const unsigned num = BIT(offset, 2); /* @@ -135,42 +140,41 @@ void gt913_device::uart_control_w(offs_t offset, uint8_t data) m_sci[num]->scr_w((data & 0x0f) << 4); } -uint8_t gt913_device::uart_control_r(offs_t offset) +u8 gt913_device::uart_control_r(offs_t offset) { const unsigned num = BIT(offset, 2); return (m_sci[num]->ssr_r() & 0xf0) | (m_sci[num]->scr_r() >> 4); } -void gt913_device::syscr_w(uint8_t data) +void gt913_device::syscr_w(u8 data) { - if (BIT(m_syscr ^ data, 2)) - // NMI active edge has changed - m_intc->set_input(INPUT_LINE_NMI, CLEAR_LINE); + // NMI active edge + m_intc->set_nmi_edge(BIT(data, 2)); m_syscr = data; } -uint8_t gt913_device::syscr_r() +u8 gt913_device::syscr_r() { return m_syscr; } -void gt913_device::data_w(offs_t offset, uint8_t data) +void gt913_device::data_w(offs_t offset, u8 data) { m_data.write_byte(offset | (m_banknum & 0xff) << 14, data); } -uint8_t gt913_device::data_r(offs_t offset) +u8 gt913_device::data_r(offs_t offset) { return m_data.read_byte(offset | (m_banknum & 0xff) << 14); } -uint8_t gt913_device::read8ib(uint32_t adr) +u8 gt913_device::read8ib(u32 adr) { - if (BIT(m_syscr, 0)) + if(BIT(m_syscr, 0)) // indirect bank disabled - return program.read_byte(adr); - else if ((IR[0] & 0x0070) == 0) + return m_program.read_byte(adr); + else if((m_IR[0] & 0x0070) == 0) // indirect bank enabled, using bankh for r0 return m_data.read_byte(adr | ((m_banknum >> 6) << 16)); else @@ -178,12 +182,12 @@ uint8_t gt913_device::read8ib(uint32_t adr) return m_data.read_byte(adr | ((m_banknum & 0x3f) << 16)); } -void gt913_device::write8ib(uint32_t adr, uint8_t data) +void gt913_device::write8ib(u32 adr, u8 data) { - if (BIT(m_syscr, 0)) + if(BIT(m_syscr, 0)) // indirect bank disabled - program.write_byte(adr, data); - else if ((IR[0] & 0x0070) == 0) + m_program.write_byte(adr, data); + else if((m_IR[0] & 0x0070) == 0) // indirect bank enabled, using bankh for r0 m_data.write_byte(adr | ((m_banknum >> 6) << 16), data); else @@ -191,14 +195,14 @@ void gt913_device::write8ib(uint32_t adr, uint8_t data) m_data.write_byte(adr | ((m_banknum & 0x3f) << 16), data); } -uint16_t gt913_device::read16ib(uint32_t adr) +u16 gt913_device::read16ib(u32 adr) { adr &= ~1; - if (BIT(m_syscr, 0)) + if(BIT(m_syscr, 0)) // indirect bank disabled - return program.read_word(adr); - else if ((IR[0] & 0x0070) == 0) + return m_program.read_word(adr); + else if((m_IR[0] & 0x0070) == 0) // indirect bank enabled, using bankh for r0 return m_data.read_word(adr | ((m_banknum >> 6) << 16)); else @@ -206,14 +210,14 @@ uint16_t gt913_device::read16ib(uint32_t adr) return m_data.read_word(adr | ((m_banknum & 0x3f) << 16)); } -void gt913_device::write16ib(uint32_t adr, uint16_t data) +void gt913_device::write16ib(u32 adr, u16 data) { adr &= ~1; - if (BIT(m_syscr, 0)) + if(BIT(m_syscr, 0)) // indirect bank disabled - program.write_word(adr, data); - else if ((IR[0] & 0x0070) == 0) + m_program.write_word(adr, data); + else if((m_IR[0] & 0x0070) == 0) // indirect bank enabled, using bankh for r0 m_data.write_word(adr | ((m_banknum >> 6) << 16), data); else @@ -223,12 +227,12 @@ void gt913_device::write16ib(uint32_t adr, uint16_t data) void gt913_device::irq_setup() { - CCR |= F_H; + m_CCR |= F_H; } void gt913_device::update_irq_filter() { - if (CCR & F_H) + if(m_CCR & F_H) m_intc->set_filter(2, -1); else m_intc->set_filter(0, -1); @@ -236,12 +240,12 @@ void gt913_device::update_irq_filter() void gt913_device::interrupt_taken() { - standard_irq_callback(m_intc->interrupt_taken(taken_irq_vector)); + standard_irq_callback(m_intc->interrupt_taken(m_taken_irq_vector), m_NPC); } -void gt913_device::internal_update(uint64_t current_time) +void gt913_device::internal_update(u64 current_time) { - uint64_t event_time = 0; + u64 event_time = 0; add_event(event_time, m_sci[0]->internal_update(current_time)); add_event(event_time, m_sci[1]->internal_update(current_time)); @@ -249,23 +253,22 @@ void gt913_device::internal_update(uint64_t current_time) recompute_bcount(event_time); } -void gt913_device::execute_set_input(int inputnum, int state) +void gt913_device::notify_standby(int state) { - if (inputnum == INPUT_LINE_NMI) - { - if (BIT(m_syscr, 2)) - state ^= ASSERT_LINE; - } + m_sci[0]->notify_standby(state); + m_sci[1]->notify_standby(state); +} +void gt913_device::execute_set_input(int inputnum, int state) +{ m_intc->set_input(inputnum, state); } device_memory_interface::space_config_vector gt913_device::memory_space_config() const { return space_config_vector{ - std::make_pair(AS_PROGRAM, &program_config), - std::make_pair(AS_IO, &io_config), - std::make_pair(AS_DATA, &data_config) + std::make_pair(AS_PROGRAM, &m_program_config), + std::make_pair(AS_DATA, &m_data_config) }; } |