diff options
Diffstat (limited to 'src/mame/drivers/pc8401a.cpp')
-rw-r--r-- | src/mame/drivers/pc8401a.cpp | 674 |
1 files changed, 0 insertions, 674 deletions
diff --git a/src/mame/drivers/pc8401a.cpp b/src/mame/drivers/pc8401a.cpp deleted file mode 100644 index 770e7ad0505..00000000000 --- a/src/mame/drivers/pc8401a.cpp +++ /dev/null @@ -1,674 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:Curt Coder -#include "emu.h" -#include "includes/pc8401a.h" - -/* - - NEC PC-8401A-LS "Starlet" - NEC PC-8500 "Studley" - - TODO: - - - keyboard interrupt - - RTC TP pulse - - disassembler for NEC uPD70008C (RST mnemonics are different from Z80) - - clock does not advance in menu - - mirror e800-ffff to 6800-7fff - - soft power on/off - - NVRAM - - 8251 USART - - 8255 ports - - MC6845 palette - - MC6845 chargen ROM - - MC6845 screen update - - - peripherals - * PC-8431A Dual Floppy Drive - * PC-8441A CRT / Disk Interface - * PC-8461A 1200 Baud Modem - * PC-8407A 128KB RAM Expansion - * PC-8508A ROM/RAM Cartridge - - - Use the 600 baud save rate (PIP CAS2:=A:<filename.ext> this is more reliable than the 1200 baud (PIP CAS:=A:<filename.ext> rate. - -*/ - -#include "bus/rs232/rs232.h" - -/* Fake Keyboard */ - -void pc8401a_state::scan_keyboard() -{ - int strobe = 0; - - /* scan keyboard */ - for (int row = 0; row < 10; row++) - { - uint8_t data = m_io_y[row]->read(); - - if (data != 0xff) - { - strobe = 1; - m_key_latch = data; - } - } - - if (!m_key_strobe && strobe) - { - /* trigger interrupt */ - m_maincpu->set_input_line_and_vector(INPUT_LINE_IRQ0, ASSERT_LINE, 0xef); // Z80 - RST 28h - logerror("INTERRUPT\n"); - } - - if (strobe) m_key_strobe = strobe; -} - -TIMER_DEVICE_CALLBACK_MEMBER(pc8401a_state::pc8401a_keyboard_tick) -{ - scan_keyboard(); -} - -/* Read/Write Handlers */ - -void pc8401a_state::bankswitch(uint8_t data) -{ - address_space &program = m_maincpu->space(AS_PROGRAM); - - int rombank = data & 0x03; - int ram0000 = (data >> 2) & 0x03; - int ram8000 = (data >> 4) & 0x03; - - switch (ram0000) - { - case 0: /* ROM 0000H to 7FFFH */ - if (rombank < 3) - { - /* internal ROM */ - program.install_read_bank(0x0000, 0x7fff, "bank1"); - program.unmap_write(0x0000, 0x7fff); - membank("bank1")->set_entry(rombank); - } - else if (m_cart_rom) - { - /* ROM cartridge */ - program.install_read_bank(0x0000, 0x7fff, "bank1"); - program.unmap_write(0x0000, 0x7fff); - membank("bank1")->set_entry(6); - } - else - program.unmap_readwrite(0x0000, 0x7fff); - //logerror("0x0000-0x7fff = ROM %u\n", rombank); - break; - - case 1: /* RAM 0000H to 7FFFH */ - program.install_readwrite_bank(0x0000, 0x7fff, "bank1"); - membank("bank1")->set_entry(4); - //logerror("0x0000-0x7fff = RAM 0-7fff\n"); - break; - - case 2: /* RAM 8000H to FFFFH */ - program.install_readwrite_bank(0x0000, 0x7fff, "bank1"); - membank("bank1")->set_entry(5); - //logerror("0x0000-0x7fff = RAM 8000-ffff\n"); - break; - - case 3: /* invalid */ - logerror("0x0000-0x7fff = invalid\n"); - break; - } - - switch (ram8000) - { - case 0: /* cell addresses 0000H to 3FFFH */ - program.install_readwrite_bank(0x8000, 0xbfff, "bank3"); - membank("bank3")->set_entry(0); - //logerror("0x8000-0xbfff = RAM 0-3fff\n"); - break; - - case 1: /* cell addresses 4000H to 7FFFH */ - program.install_readwrite_bank(0x8000, 0xbfff, "bank3"); - membank("bank3")->set_entry(1); - //logerror("0x8000-0xbfff = RAM 4000-7fff\n"); - break; - - case 2: /* cell addresses 8000H to BFFFH */ - program.install_readwrite_bank(0x8000, 0xbfff, "bank3"); - membank("bank3")->set_entry(2); - //logerror("0x8000-0xbfff = RAM 8000-bfff\n"); - break; - - case 3: /* RAM cartridge */ - if (m_ram->size() > 64) - { - program.install_readwrite_bank(0x8000, 0xbfff, "bank3"); - membank("bank3")->set_entry(3); // TODO or 4 - } - else - { - program.unmap_readwrite(0x8000, 0xbfff); - } - //logerror("0x8000-0xbfff = RAM cartridge\n"); - break; - } - - if (BIT(data, 6)) - { - /* CRT video RAM */ - program.install_readwrite_bank(0xc000, 0xdfff, "bank4"); - program.unmap_readwrite(0xe000, 0xe7ff); - membank("bank4")->set_entry(1); - //logerror("0xc000-0xdfff = video RAM\n"); - } - else - { - /* RAM */ - program.install_readwrite_bank(0xc000, 0xe7ff, "bank4"); - membank("bank4")->set_entry(0); - //logerror("0xc000-0e7fff = RAM c000-e7fff\n"); - } -} - -WRITE8_MEMBER( pc8401a_state::mmr_w ) -{ - /* - - bit description - - 0 ROM section bit 0 - 1 ROM section bit 1 - 2 mapping for CPU addresses 0000H to 7FFFH bit 0 - 3 mapping for CPU addresses 0000H to 7FFFH bit 1 - 4 mapping for CPU addresses 8000H to BFFFH bit 0 - 5 mapping for CPU addresses 8000H to BFFFH bit 1 - 6 mapping for CPU addresses C000H to E7FFH - 7 - - */ - - if (data != m_mmr) - { - bankswitch(data); - } - - m_mmr = data; -} - -READ8_MEMBER( pc8401a_state::mmr_r ) -{ - return m_mmr; -} - -READ8_MEMBER( pc8401a_state::rtc_r ) -{ - /* - - bit description - - 0 RTC TP? - 1 RTC DATA OUT - 2 ? - 3 - 4 - 5 - 6 - 7 - - */ - - return (m_rtc->data_out_r() << 1) | (m_rtc->tp_r() << 2); -} - -WRITE8_MEMBER( pc8401a_state::rtc_cmd_w ) -{ - /* - - bit description - - 0 RTC C0 - 1 RTC C1 - 2 RTC C2 - 3 RTC DATA IN? - 4 - 5 - 6 - 7 - - */ - - m_rtc->c0_w(BIT(data, 0)); - m_rtc->c1_w(BIT(data, 1)); - m_rtc->c2_w(BIT(data, 2)); - m_rtc->data_in_w(BIT(data, 3)); -} - -WRITE8_MEMBER( pc8401a_state::rtc_ctrl_w ) -{ - /* - - bit description - - 0 RTC OE or CS? - 1 RTC STB - 2 RTC CLK - 3 - 4 - 5 - 6 - 7 - - */ - - m_rtc->oe_w(BIT(data, 0)); - m_rtc->stb_w(BIT(data, 1)); - m_rtc->clk_w(BIT(data, 2)); -} - -READ8_MEMBER( pc8401a_state::io_rom_data_r ) -{ - //logerror("I/O ROM read from %05x\n", m_io_addr); - return m_io_cart->read_rom(m_io_addr); -} - -WRITE8_MEMBER( pc8401a_state::io_rom_addr_w ) -{ - switch (offset) - { - case 0: /* A17..A16 */ - m_io_addr = ((data & 0x03) << 16) | (m_io_addr & 0xffff); - break; - - case 1: /* A15..A8 */ - m_io_addr = (m_io_addr & 0x300ff) | (data << 8); - break; - - case 2: /* A7..A0 */ - m_io_addr = (m_io_addr & 0x3ff00) | data; - break; - - case 3: - /* the same data is written here as to 0xb2, maybe this latches the address value? */ - break; - } -} - -READ8_MEMBER( pc8401a_state::port70_r ) -{ - /* - - bit description - - 0 key pressed - 1 - 2 - 3 - 4 must be 1 or CPU goes to HALT - 5 - 6 - 7 - - */ - - return 0x10 | m_key_strobe; -} - -READ8_MEMBER( pc8401a_state::port71_r ) -{ - return m_key_latch; -} - -WRITE8_MEMBER( pc8401a_state::port70_w ) -{ - m_key_strobe = 0; -} - -WRITE8_MEMBER( pc8401a_state::port71_w ) -{ - m_maincpu->set_input_line(INPUT_LINE_IRQ0, CLEAR_LINE); - - m_key_latch = data; -} - -/* Memory Maps */ - -void pc8401a_state::pc8401a_mem(address_map &map) -{ - map.unmap_value_high(); - map(0x0000, 0x7fff).bankrw("bank1"); - map(0x8000, 0xbfff).bankrw("bank3"); - map(0xc000, 0xe7ff).bankrw("bank4"); - map(0xe800, 0xffff).bankrw("bank5"); -} - -void pc8401a_state::pc8401a_io(address_map &map) -{ - map.unmap_value_high(); - map.global_mask(0xff); -} - -void pc8401a_state::pc8500_io(address_map &map) -{ - map.unmap_value_high(); - map.global_mask(0xff); - map(0x00, 0x00).portr("Y.0"); - map(0x01, 0x01).portr("Y.1"); - map(0x02, 0x02).portr("Y.2"); - map(0x03, 0x03).portr("Y.3"); - map(0x04, 0x04).portr("Y.4"); - map(0x05, 0x05).portr("Y.5"); - map(0x06, 0x06).portr("Y.6"); - map(0x07, 0x07).portr("Y.7"); - map(0x08, 0x08).portr("Y.8"); - map(0x09, 0x09).portr("Y.9"); - map(0x10, 0x10).w(FUNC(pc8401a_state::rtc_cmd_w)); - map(0x20, 0x21).rw(I8251_TAG, FUNC(i8251_device::read), FUNC(i8251_device::write)); - map(0x30, 0x30).rw(FUNC(pc8401a_state::mmr_r), FUNC(pc8401a_state::mmr_w)); -// map(0x31, 0x31) - map(0x40, 0x40).rw(FUNC(pc8401a_state::rtc_r), FUNC(pc8401a_state::rtc_ctrl_w)); -// map(0x41, 0x41) -// map(0x50, 0x51) - map(0x60, 0x60).rw(m_lcdc, FUNC(sed1330_device::status_r), FUNC(sed1330_device::data_w)); - map(0x61, 0x61).rw(m_lcdc, FUNC(sed1330_device::data_r), FUNC(sed1330_device::command_w)); - map(0x70, 0x70).rw(FUNC(pc8401a_state::port70_r), FUNC(pc8401a_state::port70_w)); - map(0x71, 0x71).rw(FUNC(pc8401a_state::port71_r), FUNC(pc8401a_state::port71_w)); -// map(0x80, 0x80) modem status, set to 0xff to boot -// map(0x8b, 0x8b) -// map(0x90, 0x93) -// map(0xa0, 0xa1) - map(0x98, 0x98).w(m_crtc, FUNC(mc6845_device::address_w)); - map(0x99, 0x99).rw(m_crtc, FUNC(mc6845_device::register_r), FUNC(mc6845_device::register_w)); - map(0xb0, 0xb3).w(FUNC(pc8401a_state::io_rom_addr_w)); - map(0xb3, 0xb3).r(FUNC(pc8401a_state::io_rom_data_r)); -// map(0xc8, 0xc8) - map(0xfc, 0xff).rw(I8255A_TAG, FUNC(i8255_device::read), FUNC(i8255_device::write)); -} - -/* Input Ports */ - -static INPUT_PORTS_START( pc8401a ) - PORT_START("Y.0") - PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("STOP")// PORT_CODE(KEYCODE_ESC) PORT_CHAR(UCHAR_MAMEKEY(ESC)) - PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("SHIFT") PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1) - PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) - PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) - PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) - PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) - PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) - PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) - - PORT_START("Y.1") - PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G') - PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F') - PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E') - PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D') - PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C') - PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B') - PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A') - PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("SPACE") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') - - PORT_START("Y.2") - PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O') - PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N') - PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M') - PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L') - PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K') - PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J') - PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I') - PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H') - - PORT_START("Y.3") - PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W') - PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V') - PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U') - PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T') - PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S') - PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R') - PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q') - PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P') - - PORT_START("Y.4") - PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('*') - PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR('\'') PORT_CHAR('*') - PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(']') PORT_CHAR('*') - PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('\\') PORT_CHAR('*') - PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('[') PORT_CHAR('*') - PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z') - PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y') - PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X') - - PORT_START("Y.5") - PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('*') - PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('*') - PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('*') - PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('*') - PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('*') - PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('*') - PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('*') - PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR('*') - - PORT_START("Y.6") - PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=') PORT_CHAR('*') - PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('*') - PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('*') - PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<') - PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) // ? - PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR('*') - PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR('*') - PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('*') - - PORT_START("Y.7") - PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("ESC") PORT_CODE(KEYCODE_ESC) PORT_CHAR(UCHAR_MAMEKEY(ESC)) - PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) // ^I - PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F5") PORT_CODE(KEYCODE_F5) PORT_CHAR(UCHAR_MAMEKEY(F5)) - PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F4") PORT_CODE(KEYCODE_F4) PORT_CHAR(UCHAR_MAMEKEY(F4)) - PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F3") PORT_CODE(KEYCODE_F3) PORT_CHAR(UCHAR_MAMEKEY(F3)) - PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F2") PORT_CODE(KEYCODE_F2) PORT_CHAR(UCHAR_MAMEKEY(F2)) - PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F1") PORT_CODE(KEYCODE_F1) PORT_CHAR(UCHAR_MAMEKEY(F1)) - PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) // ^C - - PORT_START("Y.8") - PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(UTF8_RIGHT) PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT)) - PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F6) - PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F7) - PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED ) - PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNUSED ) - PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED ) - PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNUSED ) - PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNUSED ) - - PORT_START("Y.9") - PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F8) - PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F9) - PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F10) - PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F11) - PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F12) - PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("ENTER") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13) - PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("DEL BKSP") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8) - PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(UTF8_LEFT) PORT_CODE(KEYCODE_LEFT) PORT_CHAR(UCHAR_MAMEKEY(LEFT)) -INPUT_PORTS_END - -/* Machine Initialization */ - -void pc8401a_state::machine_start() -{ - std::string region_tag; - m_cart_rom = memregion(region_tag.assign(m_cart->tag()).append(GENERIC_ROM_REGION_TAG).c_str()); - - /* initialize RTC */ - m_rtc->cs_w(1); - - /* allocate CRT video RAM */ - m_crt_ram.allocate(PC8401A_CRT_VIDEORAM_SIZE); - - uint8_t *ram = m_ram->pointer(); - - /* set up A0/A1 memory banking */ - membank("bank1")->configure_entries(0, 4, m_rom->base(), 0x8000); - membank("bank1")->configure_entries(4, 2, ram, 0x8000); - if (m_cart_rom) - membank("bank1")->configure_entries(6, 1, m_cart_rom->base(), 0x8000); - membank("bank1")->set_entry(0); - - /* set up A2 memory banking */ - membank("bank3")->configure_entries(0, 5, ram, 0x4000); - membank("bank3")->set_entry(0); - - /* set up A3 memory banking */ - membank("bank4")->configure_entry(0, ram + 0xc000); - membank("bank4")->configure_entry(1, m_crt_ram); - membank("bank4")->set_entry(0); - - /* set up A4 memory banking */ - membank("bank5")->configure_entry(0, ram + 0xe800); - membank("bank5")->set_entry(0); - - /* bank switch */ - bankswitch(0); - - /* register for state saving */ - save_item(NAME(m_mmr)); - save_item(NAME(m_io_addr)); -} - -READ8_MEMBER( pc8401a_state::ppi_pc_r ) -{ - /* - - bit signal description - - PC0 - PC1 - PC2 - PC3 - PC4 PC-8431A DAV data valid - PC5 PC-8431A RFD ready for data - PC6 PC-8431A DAC data accepted - PC7 PC-8431A ATN attention - - */ - - return 0; -} - -WRITE8_MEMBER( pc8401a_state::ppi_pc_w ) -{ - /* - - bit signal description - - PC0 - PC1 - PC2 - PC3 - PC4 PC-8431A DAV data valid - PC5 PC-8431A RFD ready for data - PC6 PC-8431A DAC data accepted - PC7 PC-8431A ATN attention - - */ -} - -/* Machine Drivers */ - -void pc8401a_state::pc8401a(machine_config &config) -{ - /* basic machine hardware */ - Z80(config, m_maincpu, 7.987_MHz_XTAL / 2); // NEC uPD70008C - m_maincpu->set_addrmap(AS_PROGRAM, &pc8401a_state::pc8401a_mem); - m_maincpu->set_addrmap(AS_IO, &pc8401a_state::pc8401a_io); - - /* fake keyboard */ - TIMER(config, "keyboard").configure_periodic(FUNC(pc8401a_state::pc8401a_keyboard_tick), attotime::from_hz(64)); - - /* devices */ - UPD1990A(config, m_rtc); - - i8255_device &ppi(I8255A(config, I8255A_TAG)); - ppi.in_pc_callback().set(FUNC(pc8401a_state::ppi_pc_r)); - ppi.out_pc_callback().set(FUNC(pc8401a_state::ppi_pc_w)); - - i8251_device &uart(I8251(config, I8251_TAG, 0)); - uart.txd_handler().set(RS232_TAG, FUNC(rs232_port_device::write_txd)); - uart.dtr_handler().set(RS232_TAG, FUNC(rs232_port_device::write_dtr)); - uart.rts_handler().set(RS232_TAG, FUNC(rs232_port_device::write_rts)); - - rs232_port_device &rs232(RS232_PORT(config, RS232_TAG, default_rs232_devices, nullptr)); - rs232.rxd_handler().set(I8251_TAG, FUNC(i8251_device::write_rxd)); - rs232.dsr_handler().set(I8251_TAG, FUNC(i8251_device::write_dsr)); - - /* video hardware */ - pc8401a_video(config); - - /* option ROM cartridge */ - GENERIC_CARTSLOT(config, m_cart, generic_plain_slot, nullptr, "bin,rom"); - - /* I/O ROM cartridge */ - GENERIC_CARTSLOT(config, m_io_cart, generic_linear_slot, nullptr, "bin,rom"); - - /* internal ram */ - RAM(config, RAM_TAG).set_default_size("64K").set_extra_options("96K"); -} - -void pc8500_state::pc8500(machine_config &config) -{ - /* basic machine hardware */ - Z80(config, m_maincpu, 4000000); // NEC uPD70008C - m_maincpu->set_addrmap(AS_PROGRAM, &pc8500_state::pc8401a_mem); - m_maincpu->set_addrmap(AS_IO, &pc8500_state::pc8500_io); - - /* fake keyboard */ - TIMER(config, "keyboard").configure_periodic(FUNC(pc8401a_state::pc8401a_keyboard_tick), attotime::from_hz(64)); - - /* devices */ - UPD1990A(config, m_rtc); - - i8255_device &ppi(I8255A(config, I8255A_TAG)); - ppi.in_pc_callback().set(FUNC(pc8401a_state::ppi_pc_r)); - ppi.out_pc_callback().set(FUNC(pc8401a_state::ppi_pc_w)); - - i8251_device &uart(I8251(config, I8251_TAG, 0)); - uart.txd_handler().set(RS232_TAG, FUNC(rs232_port_device::write_txd)); - uart.dtr_handler().set(RS232_TAG, FUNC(rs232_port_device::write_dtr)); - uart.rts_handler().set(RS232_TAG, FUNC(rs232_port_device::write_rts)); - - rs232_port_device &rs232(RS232_PORT(config, RS232_TAG, default_rs232_devices, nullptr)); - rs232.rxd_handler().set(I8251_TAG, FUNC(i8251_device::write_rxd)); - rs232.dsr_handler().set(I8251_TAG, FUNC(i8251_device::write_dsr)); - - /* video hardware */ - pc8500_video(config); - - /* option ROM cartridge */ - GENERIC_CARTSLOT(config, m_cart, generic_plain_slot, nullptr, "bin,rom"); - - /* I/O ROM cartridge */ - GENERIC_CARTSLOT(config, m_io_cart, generic_linear_slot, nullptr, "bin,rom"); - - /* internal ram */ - RAM(config, RAM_TAG).set_default_size("64K").set_extra_options("96K"); -} - -/* ROMs */ - -ROM_START( pc8401a ) - ROM_REGION( 0x20000, Z80_TAG, ROMREGION_ERASEFF ) - ROM_LOAD( "pc8401a.bin", 0x0000, 0x18000, NO_DUMP ) - - ROM_REGION( 0x1000, "chargen", 0 ) - ROM_LOAD( "pc8441a.bin", 0x0000, 0x1000, NO_DUMP ) -ROM_END - -ROM_START( pc8500 ) - ROM_REGION( 0x20000, Z80_TAG, ROMREGION_ERASEFF ) - ROM_LOAD( "pc8500.bin", 0x0000, 0x10000, CRC(c2749ef0) SHA1(f766afce9fda9ec84ed5b39ebec334806798afb3) ) - - ROM_REGION( 0x1000, "chargen", 0 ) - ROM_LOAD( "pc8441a.bin", 0x0000, 0x1000, NO_DUMP ) -ROM_END - -/* System Drivers */ - -/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME */ -COMP( 1984, pc8401a, 0, 0, pc8401a, pc8401a, pc8401a_state, empty_init, "NEC", "PC-8401A-LS", MACHINE_NOT_WORKING | MACHINE_NO_SOUND) -//COMP( 1984, pc8401bd, pc8401a, 0, pc8401a, pc8401a, pc8401a_state, empty_init, "NEC", "PC-8401BD", MACHINE_NOT_WORKING) -COMP( 1985, pc8500, 0, 0, pc8500, pc8401a, pc8500_state, empty_init, "NEC", "PC-8500", MACHINE_NOT_WORKING | MACHINE_NO_SOUND) |