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Diffstat (limited to 'src/mame/drivers/apricot.cpp')
-rw-r--r-- | src/mame/drivers/apricot.cpp | 516 |
1 files changed, 0 insertions, 516 deletions
diff --git a/src/mame/drivers/apricot.cpp b/src/mame/drivers/apricot.cpp deleted file mode 100644 index d5a5c365171..00000000000 --- a/src/mame/drivers/apricot.cpp +++ /dev/null @@ -1,516 +0,0 @@ -// license:GPL-2.0+ -// copyright-holders:Dirk Best -/*************************************************************************** - - ACT Apricot PC/Xi - - TODO: - - External RS232 data transfers to the Apricot are usually garbage (but - sending to an external target works fine) - - Dump of the keyboard MCU ROM needed (can be dumped using test mode) - -***************************************************************************/ - -#include "emu.h" -#include "bus/apricot/expansion/expansion.h" -#include "bus/apricot/keyboard/keyboard.h" -#include "bus/centronics/ctronics.h" -#include "bus/rs232/rs232.h" -#include "cpu/i86/i86.h" -#include "cpu/i8089/i8089.h" -#include "formats/apridisk.h" -#include "imagedev/floppy.h" -#include "machine/clock.h" -#include "machine/ram.h" -#include "machine/74153.h" -#include "machine/i8255.h" -#include "machine/pic8259.h" -#include "machine/pit8253.h" -#include "machine/wd_fdc.h" -#include "machine/z80sio.h" -#include "sound/sn76496.h" -#include "video/mc6845.h" -#include "emupal.h" -#include "screen.h" -#include "softlist.h" -#include "speaker.h" - - -//************************************************************************** -// TYPE DEFINITIONS -//************************************************************************** - -class apricot_state : public driver_device -{ -public: - apricot_state(const machine_config &mconfig, device_type type, const char *tag) : - driver_device(mconfig, type, tag), - m_cpu(*this, "ic91"), - m_iop(*this, "ic71"), - m_ram(*this, RAM_TAG), - m_crtc(*this, "ic30"), - m_ppi(*this, "ic17"), - m_pic(*this, "ic31"), - m_pit(*this, "ic16"), - m_sio(*this, "ic15"), - m_rs232(*this, "rs232"), - m_centronics(*this, "centronics"), - m_fdc(*this, "ic68"), - m_floppy0(*this, "ic68:0"), - m_floppy1(*this, "ic68:1"), - m_palette(*this, "palette"), - m_exp(*this, "exp"), - m_screen_buffer(*this, "screen_buffer"), - m_video_mode(0), - m_display_on(1), - m_display_enabled(0), - m_centronics_fault(1), - m_centronics_perror(1), - m_bus_locked(0) - { } - - void apricot(machine_config &config); - void apricotxi(machine_config &config); - -private: - DECLARE_FLOPPY_FORMATS(floppy_formats); - - DECLARE_WRITE_LINE_MEMBER(i8086_lock_w); - DECLARE_WRITE8_MEMBER(i8089_ca1_w); - DECLARE_WRITE8_MEMBER(i8089_ca2_w); - DECLARE_WRITE8_MEMBER(i8255_portb_w); - DECLARE_READ8_MEMBER(i8255_portc_r); - DECLARE_WRITE8_MEMBER(i8255_portc_w); - DECLARE_WRITE_LINE_MEMBER(fdc_intrq_w); - DECLARE_READ8_MEMBER(sio_da_r); - DECLARE_READ8_MEMBER(sio_ca_r); - DECLARE_READ8_MEMBER(sio_db_r); - DECLARE_READ8_MEMBER(sio_cb_r); - - DECLARE_WRITE_LINE_MEMBER(write_centronics_fault); - DECLARE_WRITE_LINE_MEMBER(write_centronics_perror); - - DECLARE_WRITE_LINE_MEMBER(apricot_hd6845_de) { m_display_enabled = state; }; - - MC6845_UPDATE_ROW(crtc_update_row); - uint32_t screen_update_apricot(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect); - - void apricot_io(address_map &map); - void apricot_mem(address_map &map); - - virtual void machine_start() override; - - required_device<i8086_cpu_device> m_cpu; - required_device<i8089_device> m_iop; - required_device<ram_device> m_ram; - required_device<hd6845s_device> m_crtc; - required_device<i8255_device> m_ppi; - required_device<pic8259_device> m_pic; - required_device<pit8253_device> m_pit; - required_device<z80sio_device> m_sio; - required_device<rs232_port_device> m_rs232; - required_device<centronics_device> m_centronics; - required_device<wd2797_device> m_fdc; - required_device<floppy_connector> m_floppy0; - required_device<floppy_connector> m_floppy1; - required_device<palette_device> m_palette; - required_device<apricot_expansion_bus_device> m_exp; - required_shared_ptr<uint16_t> m_screen_buffer; - - bool m_video_mode; - bool m_display_on; - - int m_display_enabled; - - int m_centronics_fault; - int m_centronics_perror; - - int m_bus_locked; -}; - - -//************************************************************************** -// I/O -//************************************************************************** - -WRITE8_MEMBER( apricot_state::i8089_ca1_w ) -{ - m_iop->sel_w(0); - m_iop->ca_w(1); - m_iop->ca_w(0); -} - -WRITE8_MEMBER( apricot_state::i8089_ca2_w ) -{ - m_iop->sel_w(1); - m_iop->ca_w(1); - m_iop->ca_w(0); -} - -WRITE_LINE_MEMBER( apricot_state::write_centronics_fault ) -{ - m_centronics_fault = state; - m_sio->syncb_w(state); - m_ppi->pc2_w(state); -} - -WRITE_LINE_MEMBER( apricot_state::write_centronics_perror ) -{ - m_centronics_perror = state; -} - -READ8_MEMBER( apricot_state::i8255_portc_r ) -{ - uint8_t data = 0; - - data |= m_centronics_perror << 0; - // schematic page 294 says pc1 is centronics pin 34, which is n/c. - data |= m_centronics_fault << 2; - data |= m_display_enabled << 3; - - return data; -} - -WRITE8_MEMBER( apricot_state::i8255_portb_w ) -{ - // bit 0, crt reset - // bit 1, not connected - - m_display_on = BIT(data, 3); - m_video_mode = BIT(data, 4); - - floppy_image_device *floppy = nullptr; - - // bit 5, enable disk select - // bit 6, disk select - if (!BIT(data, 5)) - floppy = BIT(data, 6) ? m_floppy1->get_device() : m_floppy0->get_device(); - - m_fdc->set_floppy(floppy); - - // bit 2, head load (motor on is wired to be active once a disk has been inserted) - // we just let the motor run all the time for now - if (floppy) - floppy->mon_w(0); - - // switch video modes - m_crtc->set_unscaled_clock(15_MHz_XTAL / (m_video_mode ? 10 : 16)); - m_crtc->set_hpixels_per_column(m_video_mode ? 10 : 16); - - // PB7 Centronics transceiver direction. 0 = output, 1 = input -} - -WRITE8_MEMBER( apricot_state::i8255_portc_w ) -{ -// schematic page 294 says pc4 outputs to centronics pin 13, which is the "select" output from the printer. - m_centronics->write_strobe(BIT(data, 5)); -// schematic page 294 says pc6 outputs to centronics pin 15, which is unused -} - -READ8_MEMBER( apricot_state::sio_da_r ) -{ - if (m_bus_locked) - return m_sio->m1_r(); - - return m_sio->da_r(); -} - -READ8_MEMBER( apricot_state::sio_ca_r ) -{ - if (m_bus_locked) - return m_sio->m1_r(); - - return m_sio->ca_r(); -} - -READ8_MEMBER( apricot_state::sio_cb_r ) -{ - if (m_bus_locked) - return m_sio->m1_r(); - - return m_sio->cb_r(); -} - -READ8_MEMBER( apricot_state::sio_db_r ) -{ - if (m_bus_locked) - return m_sio->m1_r(); - - return m_sio->db_r(); -} - - -//************************************************************************** -// FLOPPY -//************************************************************************** - -WRITE_LINE_MEMBER( apricot_state::fdc_intrq_w ) -{ - m_pic->ir4_w(state); - m_iop->ext1_w(state); -} - -FLOPPY_FORMATS_MEMBER( apricot_state::floppy_formats ) - FLOPPY_APRIDISK_FORMAT -FLOPPY_FORMATS_END - -static void apricot_floppies(device_slot_interface &device) -{ - device.option_add("d31v", SONY_OA_D31V); - device.option_add("d32w", SONY_OA_D32W); -} - - -//************************************************************************** -// VIDEO EMULATION -//************************************************************************** - -uint32_t apricot_state::screen_update_apricot(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) -{ - if (!m_display_on) - m_crtc->screen_update(screen, bitmap, cliprect); - else - bitmap.fill(rgb_t::black(), cliprect); - - return 0; -} - -MC6845_UPDATE_ROW( apricot_state::crtc_update_row ) -{ - const pen_t *pen = m_palette->pens(); - - for (int i = 0; i < x_count; i++) - { - uint16_t code = m_screen_buffer[(ma + i) & 0x7ff]; - uint16_t offset = ((code & 0x7ff) << 5) | (ra << 1); - uint16_t data = m_cpu->space(AS_PROGRAM).read_word(offset); - - if (m_video_mode) - { - int fill = 0; - - if (i == cursor_x) fill = 1; // cursor? - if (BIT(code, 12) && BIT(data, 14)) fill = 1; // strike-through? - if (BIT(code, 13) && BIT(data, 15)) fill = 1; // underline? - - // draw 10 pixels of the character - for (int x = 0; x <= 10; x++) - { - int color = fill ? 1 : BIT(data, x); - color ^= BIT(code, 15); // reverse? - bitmap.pix32(y, x + i*10) = pen[color ? 1 + BIT(code, 14) : 0]; - } - } - else - { - // draw 16 pixels of the cell - for (int x = 0; x <= 16; x++) - bitmap.pix32(y, x + i*16) = pen[BIT(data, x)]; - } - } -} - -//************************************************************************** -// MACHINE EMULATION -//************************************************************************** - -void apricot_state::machine_start() -{ - membank("ram")->set_base(m_ram->pointer()); -} - -WRITE_LINE_MEMBER( apricot_state::i8086_lock_w ) -{ - m_bus_locked = state; -} - - -//************************************************************************** -// ADDRESS MAPS -//************************************************************************** - -void apricot_state::apricot_mem(address_map &map) -{ - map(0x00000, 0x3ffff).bankrw("ram"); - map(0xf0000, 0xf0fff).mirror(0x7000).ram().share("screen_buffer"); - map(0xf8000, 0xfbfff).mirror(0x4000).rom().region("bootstrap", 0); -} - -void apricot_state::apricot_io(address_map &map) -{ - map(0x00, 0x03).rw(m_pic, FUNC(pic8259_device::read), FUNC(pic8259_device::write)).umask16(0x00ff); - map(0x40, 0x47).rw(m_fdc, FUNC(wd2797_device::read), FUNC(wd2797_device::write)).umask16(0x00ff); - map(0x48, 0x4f).rw(m_ppi, FUNC(i8255_device::read), FUNC(i8255_device::write)).umask16(0x00ff); - map(0x50, 0x50).mirror(0x06).w("ic7", FUNC(sn76489_device::write)); - map(0x58, 0x5f).rw(m_pit, FUNC(pit8253_device::read), FUNC(pit8253_device::write)).umask16(0x00ff); - map(0x60, 0x60).r(FUNC(apricot_state::sio_da_r)).w(m_sio, FUNC(z80sio_device::da_w)).umask16(0x00ff); - map(0x62, 0x62).r(FUNC(apricot_state::sio_ca_r)).w(m_sio, FUNC(z80sio_device::ca_w)).umask16(0x00ff); - map(0x64, 0x64).r(FUNC(apricot_state::sio_db_r)).w(m_sio, FUNC(z80sio_device::db_w)).umask16(0x00ff); - map(0x66, 0x66).r(FUNC(apricot_state::sio_cb_r)).w(m_sio, FUNC(z80sio_device::cb_w)).umask16(0x00ff); - map(0x68, 0x68).mirror(0x04).w(m_crtc, FUNC(hd6845s_device::address_w)); - map(0x6a, 0x6a).mirror(0x04).rw(m_crtc, FUNC(hd6845s_device::register_r), FUNC(hd6845s_device::register_w)); - map(0x70, 0x70).mirror(0x04).w(FUNC(apricot_state::i8089_ca1_w)); - map(0x72, 0x72).mirror(0x04).w(FUNC(apricot_state::i8089_ca2_w)); - map(0x78, 0x7f).noprw(); // unavailable -} - - -//************************************************************************** -// MACHINE DRIVERS -//************************************************************************** - -void apricot_state::apricot(machine_config &config) -{ - // main cpu - I8086(config, m_cpu, 15_MHz_XTAL / 3); - m_cpu->set_addrmap(AS_PROGRAM, &apricot_state::apricot_mem); - m_cpu->set_addrmap(AS_IO, &apricot_state::apricot_io); - m_cpu->set_irq_acknowledge_callback("ic31", FUNC(pic8259_device::inta_cb)); - m_cpu->lock_handler().set(FUNC(apricot_state::i8086_lock_w)); - - // i/o cpu - I8089(config, m_iop, 15_MHz_XTAL / 3); - m_iop->set_addrmap(AS_PROGRAM, &apricot_state::apricot_mem); - m_iop->set_addrmap(AS_IO, &apricot_state::apricot_io); - m_iop->set_data_width(16); - m_iop->sintr1().set(m_pic, FUNC(pic8259_device::ir0_w)); - m_iop->sintr2().set(m_pic, FUNC(pic8259_device::ir1_w)); - - // ram - RAM(config, RAM_TAG).set_default_size("256K"); - - // video hardware - screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER)); - screen.set_color(rgb_t::green()); - screen.set_size(800, 400); - screen.set_visarea(0, 800-1, 0, 400-1); - screen.set_refresh_hz(72); - screen.set_screen_update(FUNC(apricot_state::screen_update_apricot)); - - PALETTE(config, m_palette, palette_device::MONOCHROME_HIGHLIGHT); - - HD6845S(config, m_crtc, 15_MHz_XTAL / 10); - m_crtc->set_screen("screen"); - m_crtc->set_show_border_area(false); - m_crtc->set_char_width(10); - m_crtc->set_update_row_callback(FUNC(apricot_state::crtc_update_row)); - m_crtc->out_de_callback().set(FUNC(apricot_state::apricot_hd6845_de)); - - // sound hardware - SPEAKER(config, "mono").front_center(); - SN76489(config, "ic7", 4_MHz_XTAL / 2).add_route(ALL_OUTPUTS, "mono", 1.0); - - // devices - I8255A(config, m_ppi, 0); - m_ppi->in_pa_callback().set("cent_data_in", FUNC(input_buffer_device::bus_r)); - m_ppi->out_pa_callback().set("cent_data_out", FUNC(output_latch_device::bus_w)); - m_ppi->out_pb_callback().set(FUNC(apricot_state::i8255_portb_w)); - m_ppi->in_pc_callback().set(FUNC(apricot_state::i8255_portc_r)); - m_ppi->out_pc_callback().set(FUNC(apricot_state::i8255_portc_w)); - - PIC8259(config, m_pic, 0); - m_pic->out_int_callback().set_inputline(m_cpu, 0); - - PIT8253(config, m_pit, 0); - m_pit->set_clk<0>(4_MHz_XTAL / 16); - m_pit->out_handler<0>().set(m_pic, FUNC(pic8259_device::ir6_w)); - m_pit->set_clk<1>(4_MHz_XTAL / 2); - m_pit->out_handler<1>().set("ic14", FUNC(ttl153_device::i0a_w)); - m_pit->set_clk<2>(4_MHz_XTAL / 2); - m_pit->out_handler<2>().set("ic14", FUNC(ttl153_device::i0b_w)); - m_pit->out_handler<2>().append("ic14", FUNC(ttl153_device::i2a_w)); - m_pit->out_handler<2>().append("ic14", FUNC(ttl153_device::i2b_w)); - - ttl153_device &ttl74153(TTL153(config, "ic14")); - ttl74153.za_cb().set("ic15", FUNC(z80sio_device::rxca_w)); - ttl74153.zb_cb().set("ic15", FUNC(z80sio_device::txca_w)); - - CLOCK(config, "ic15_rxtxcb", 4_MHz_XTAL / 16).signal_handler().set(m_sio, FUNC(z80sio_device::rxtxcb_w)); - - Z80SIO(config, m_sio, 15_MHz_XTAL / 6); - m_sio->set_cputag(m_cpu); - m_sio->out_txda_callback().set(m_rs232, FUNC(rs232_port_device::write_txd)); - m_sio->out_dtra_callback().set(m_rs232, FUNC(rs232_port_device::write_dtr)); - m_sio->out_rtsa_callback().set(m_rs232, FUNC(rs232_port_device::write_rts)); - m_sio->out_wrdya_callback().set(m_iop, FUNC(i8089_device::drq2_w)); - m_sio->out_txdb_callback().set("kbd", FUNC(apricot_keyboard_bus_device::out_w)); - m_sio->out_dtrb_callback().set("ic14", FUNC(ttl153_device::s0_w)); - m_sio->out_rtsb_callback().set("ic14", FUNC(ttl153_device::s1_w)); - m_sio->out_int_callback().set(m_pic, FUNC(pic8259_device::ir5_w)); - - // rs232 port - RS232_PORT(config, m_rs232, default_rs232_devices, nullptr); - // note: missing a receive clock callback to support external clock mode (i1 to 153) - m_rs232->rxd_handler().set(m_sio, FUNC(z80sio_device::rxa_w)); - m_rs232->dcd_handler().set(m_sio, FUNC(z80sio_device::dcda_w)); - m_rs232->dsr_handler().set(m_sio, FUNC(z80sio_device::synca_w)); - m_rs232->cts_handler().set(m_sio, FUNC(z80sio_device::ctsa_w)).invert(); - - // keyboard - APRICOT_KEYBOARD_INTERFACE(config, "kbd", apricot_keyboard_devices, "hle").in_handler().set(m_sio, FUNC(z80sio_device::rxb_w)); - - // centronics printer - CENTRONICS(config, m_centronics, centronics_devices, "printer"); - m_centronics->set_data_input_buffer("cent_data_in"); - m_centronics->ack_handler().set(m_sio, FUNC(z80sio_device::ctsb_w)); - m_centronics->busy_handler().set(m_sio, FUNC(z80sio_device::dcdb_w)); - m_centronics->fault_handler().set(FUNC(apricot_state::write_centronics_fault)); - m_centronics->perror_handler().set(FUNC(apricot_state::write_centronics_perror)); - //m_centronics->select_handler().set(); // schematic page 294 says this is connected to pc4, but that is an output to the printer - - INPUT_BUFFER(config, "cent_data_in"); - - output_latch_device ¢_data_out(OUTPUT_LATCH(config, "cent_data_out")); - m_centronics->set_output_latch(cent_data_out); - - // floppy - WD2797(config, m_fdc, 4_MHz_XTAL / 2); - m_fdc->intrq_wr_callback().set(FUNC(apricot_state::fdc_intrq_w)); - m_fdc->drq_wr_callback().set(m_iop, FUNC(i8089_device::drq1_w)); - FLOPPY_CONNECTOR(config, "ic68:0", apricot_floppies, "d32w", apricot_state::floppy_formats); - FLOPPY_CONNECTOR(config, "ic68:1", apricot_floppies, "d32w", apricot_state::floppy_formats); - - SOFTWARE_LIST(config, "flop_list").set_original("apricot_flop"); - - // expansion bus - APRICOT_EXPANSION_BUS(config, m_exp, 0); - m_exp->set_program_space(m_cpu, AS_PROGRAM); - m_exp->set_io_space(m_cpu, AS_IO); - m_exp->set_program_iop_space(m_iop, AS_PROGRAM); - m_exp->set_io_iop_space(m_iop, AS_IO); - m_exp->int2().set(m_pic, FUNC(pic8259_device::ir2_w)); - m_exp->int3().set(m_pic, FUNC(pic8259_device::ir3_w)); - APRICOT_EXPANSION_SLOT(config, "exp:1", apricot_expansion_cards, nullptr); - APRICOT_EXPANSION_SLOT(config, "exp:2", apricot_expansion_cards, nullptr); -} - -void apricot_state::apricotxi(machine_config &config) -{ - apricot(config); -} - - -//************************************************************************** -// ROM DEFINITIONS -//************************************************************************** - -ROM_START( apricot ) - ROM_REGION16_LE(0x4000, "bootstrap", 0) - ROM_LOAD16_BYTE("pc_bios_lo_001.bin", 0x0000, 0x2000, CRC(0c217cc2) SHA1(0d7a2b61e17966462b555115f962a175fadcf72a)) - ROM_LOAD16_BYTE("pc_bios_hi_001.bin", 0x0001, 0x2000, CRC(7c27f36c) SHA1(c801bbf904815f76ec6463e948f57e0118a26292)) -ROM_END - -ROM_START( apricotxi ) - ROM_REGION16_LE(0x4000, "bootstrap", 0) - ROM_LOAD16_BYTE("lo_ve007.u11", 0x0000, 0x2000, CRC(e74e14d1) SHA1(569133b0266ce3563b21ae36fa5727308797deee)) // LO Ve007 03.04.84 - ROM_LOAD16_BYTE("hi_ve007.u9", 0x0001, 0x2000, CRC(b04fb83e) SHA1(cc2b2392f1b4c04bb6ec8ee26f8122242c02e572)) // HI Ve007 03.04.84 -ROM_END - - -//************************************************************************** -// GAME DRIVERS -//************************************************************************** - -// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS -COMP( 1983, apricot, 0, 0, apricot, 0, apricot_state, empty_init, "ACT", "Apricot PC", 0 ) -COMP( 1984, apricotxi, apricot, 0, apricotxi, 0, apricot_state, empty_init, "ACT", "Apricot Xi", 0 ) |