// license:BSD-3-Clause // copyright-holders:Sergey Svishchev /********************************************************************** Poisk-1 FDC device (model B504) **********************************************************************/ #include "emu.h" #include "p1_fdc.h" #include "cpu/i86/i86.h" #include "formats/pc_dsk.h" //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** DEFINE_DEVICE_TYPE(P1_FDC, p1_fdc_device, "p1_fdc", "Poisk-1 floppy B504") FLOPPY_FORMATS_MEMBER( p1_fdc_device::floppy_formats ) FLOPPY_PC_FORMAT FLOPPY_FORMATS_END static void poisk1_floppies(device_slot_interface &device) { device.option_add("525qd", FLOPPY_525_QD); } //------------------------------------------------- // ROM( p1_fdc ) //------------------------------------------------- ROM_START( p1_fdc ) ROM_REGION( 0x0800, "p1_fdc", 0 ) ROM_DEFAULT_BIOS("a302") ROM_SYSTEM_BIOS(0, "normal", "B504 standard ROM") ROMX_LOAD( "b_ngmd_n.rf2", 0x00000, 0x0800, CRC(967e172a) SHA1(95117c40fd9f624fee08ccf37f615b16ff249688), ROM_BIOS(0)) ROM_SYSTEM_BIOS(1, "a302", "v3.02") // Additional ROM BIOS v3.02 for DISKETTE service (c) Moscow 1991 ROMX_LOAD( "b_ngmd_t.rf2", 0x00000, 0x0800, CRC(630010b1) SHA1(50876fe4f5f4f32a242faa70f9154574cd315ec4), ROM_BIOS(1)) ROM_SYSTEM_BIOS(2, "ae304", "v3.04") // Additional enhanced ROM BIOS v3.04 for DISKETTE service (c) V.Rusakow Moscow 1992 ROMX_LOAD( "p_fdd_nm.bin", 0x00000, 0x0800, CRC(0b7f867d) SHA1(9fe7e0ab2242e50394d1162cf1a619b6f2994bfb), ROM_BIOS(2)) ROM_SYSTEM_BIOS(3, "ae308", "v3.08") // Additional enhanced ROM BIOS v3.08 for DISKETTE service (c) V.Rusakov Tarasovka 1992 ROMX_LOAD( "p_fdd_my.bin", 0x00000, 0x0800, CRC(da5d0eaf) SHA1(b188ba856bd28e4964a88feb0b0b2ba7eb320efc), ROM_BIOS(3)) ROM_END //------------------------------------------------- // device_add_mconfig - add device configuration //------------------------------------------------- void p1_fdc_device::device_add_mconfig(machine_config &config) { FD1793(config, m_fdc, 16_MHz_XTAL / 16); m_fdc->intrq_wr_callback().set(FUNC(p1_fdc_device::p1_fdc_irq_drq)); m_fdc->drq_wr_callback().set(FUNC(p1_fdc_device::p1_fdc_irq_drq)); FLOPPY_CONNECTOR(config, "fdc:0", poisk1_floppies, "525qd", p1_fdc_device::floppy_formats); FLOPPY_CONNECTOR(config, "fdc:1", poisk1_floppies, "525qd", p1_fdc_device::floppy_formats); } //------------------------------------------------- // rom_region - device-specific ROM region //------------------------------------------------- const tiny_rom_entry *p1_fdc_device::device_rom_region() const { return ROM_NAME(p1_fdc); } //************************************************************************** // LIVE DEVICE //************************************************************************** uint8_t p1_fdc_device::p1_wd17xx_motor_r() { // XXX always on for now return 0; } uint8_t p1_fdc_device::p1_wd17xx_aux_r() { cpu_device *maincpu = machine().device("maincpu"); if (!m_fdc->drq_r() && !m_fdc->intrq_r()) { // fake cpu wait by resetting PC one insn back maincpu->set_state_int(I8086_IP, maincpu->state_int(I8086_IP) - 2); maincpu->set_input_line(INPUT_LINE_HALT, ASSERT_LINE); } return m_fdc->drq_r(); } /* ; D0 - DRIVE SELECT 0 ; D1 - DRIVE SELECT 1 ; D2 - MOTOR ON 0 ; D3 - MOTOR ON 1 ; D4 - SIDE (HEAD) SELECT ; D5 - DOUBLE DENSITY ; D6 - FDC RESET ; D7 - NO USE */ void p1_fdc_device::p1_wd17xx_aux_w(int data) { floppy_image_device *floppy0 = m_fdc->subdevice("0")->get_device(); floppy_image_device *floppy1 = m_fdc->subdevice("1")->get_device(); floppy_image_device *floppy = ((data & 2) ? floppy1 : floppy0); if (!BIT(data, 6)) m_fdc->reset(); m_fdc->set_floppy(floppy); floppy->ss_w(BIT(data, 4)); m_fdc->dden_w(BIT(data, 5)); floppy0->mon_w(!(data & 4)); floppy1->mon_w(!(data & 8)); } WRITE_LINE_MEMBER(p1_fdc_device::p1_fdc_irq_drq) { cpu_device *maincpu = machine().device("maincpu"); if (state) maincpu->set_input_line(INPUT_LINE_HALT, CLEAR_LINE); } READ8_MEMBER(p1_fdc_device::p1_fdc_r) { uint8_t data = 0xff; switch (offset) { case 0: data = p1_wd17xx_aux_r(); break; case 2: data = p1_wd17xx_motor_r(); break; } return data; } WRITE8_MEMBER(p1_fdc_device::p1_fdc_w) { switch (offset) { case 0: p1_wd17xx_aux_w(data); break; } } //------------------------------------------------- // p1_fdc_device - constructor //------------------------------------------------- p1_fdc_device::p1_fdc_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : device_t(mconfig, P1_FDC, tag, owner, clock) , device_isa8_card_interface(mconfig, *this) , m_fdc(*this, "fdc") { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void p1_fdc_device::device_start() { set_isa_device(); m_isa->install_rom(this, 0xe0000, 0xe07ff, "XXX", "p1_fdc"); m_isa->install_device(0x00c0, 0x00c3, read8sm_delegate(FUNC(fd1793_device::read), m_fdc.target()), write8sm_delegate(FUNC(fd1793_device::write), m_fdc.target())); m_isa->install_device(0x00c4, 0x00c7, read8_delegate( FUNC(p1_fdc_device::p1_fdc_r), this ), write8_delegate( FUNC(p1_fdc_device::p1_fdc_w), this ) ); } //------------------------------------------------- // device_reset - device-specific reset //------------------------------------------------- void p1_fdc_device::device_reset() { }