// license:BSD-3-Clause // copyright-holders:XXX /********************************************************************** Poisk-1 FDC device (model B504) Copyright MESS Team. Visit http://mamedev.org for licensing and usage restrictions. **********************************************************************/ #include "p1_fdc.h" #include "cpu/i86/i86.h" #include "formats/dsk_dsk.h" #include "formats/pc_dsk.h" #define VERBOSE_DBG 0 #define DBG_LOG(N,M,A) \ do { \ if(VERBOSE_DBG>=N) \ { \ if( M ) \ logerror("%11.6f: %-24s",machine().time().as_double(),(char*)M ); \ logerror A; \ } \ } while (0) //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** const device_type P1_FDC = &device_creator; static DECLARE_READ8_DEVICE_HANDLER(p1_FDC_r); static DECLARE_WRITE8_DEVICE_HANDLER(p1_FDC_w); FLOPPY_FORMATS_MEMBER( p1_fdc_device::floppy_formats ) FLOPPY_PC_FORMAT, FLOPPY_DSK_FORMAT FLOPPY_FORMATS_END static SLOT_INTERFACE_START( poisk1_floppies ) SLOT_INTERFACE( "525qd", FLOPPY_525_QD ) SLOT_INTERFACE_END static MACHINE_CONFIG_FRAGMENT( fdc_b504 ) MCFG_FD1793x_ADD("fdc", XTAL_16MHz / 16) MCFG_FLOPPY_DRIVE_ADD("fdc:0", poisk1_floppies, "525qd", p1_fdc_device::floppy_formats) MCFG_FLOPPY_DRIVE_ADD("fdc:1", poisk1_floppies, "525qd", p1_fdc_device::floppy_formats) MACHINE_CONFIG_END //------------------------------------------------- // 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(1)) 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(2)) 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(3)) 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(4)) ROM_END //------------------------------------------------- // machine_config_additions - device-specific // machine configurations //------------------------------------------------- machine_config_constructor p1_fdc_device::device_mconfig_additions() const { return MACHINE_CONFIG_NAME( fdc_b504 ); } //------------------------------------------------- // rom_region - device-specific ROM region //------------------------------------------------- const rom_entry *p1_fdc_device::device_rom_region() const { return ROM_NAME( p1_fdc ); } //************************************************************************** // LIVE DEVICE //************************************************************************** UINT8 p1_fdc_device::p1_wd17xx_motor_r() { DBG_LOG(1,"p1_fdc_motor_r",("R = $%02x\n", 0)); // XXX always on for now return 0; } UINT8 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) { DBG_LOG(1,"p1_fdc_aux_w",("W $%02x\n", 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)); } void p1_fdc_device::p1_fdc_irq_drq(bool state) { cpu_device *maincpu = machine().device("maincpu"); if(state) maincpu->set_input_line(INPUT_LINE_HALT, CLEAR_LINE); } static READ8_DEVICE_HANDLER( p1_FDC_r ) { UINT8 data = 0xff; p1_fdc_device *fdc = downcast(device); switch( offset ) { case 0: data = fdc->p1_wd17xx_aux_r(); break; case 2: data = fdc->p1_wd17xx_motor_r(); break; } return data; } static WRITE8_DEVICE_HANDLER( p1_FDC_w ) { p1_fdc_device *fdc = downcast(device); switch( offset ) { case 0: fdc->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 clock) : device_t(mconfig, P1_FDC, "Poisk-1 floppy B504", tag, owner, clock, "p1_fdc", __FILE__), 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, 0, 0, "XXX", "p1_fdc"); m_isa->install_device(0x00c0, 0x00c3, 0, 0, READ8_DEVICE_DELEGATE(m_fdc, fd1793_t, read), WRITE8_DEVICE_DELEGATE(m_fdc, fd1793_t, write) ); m_isa->install_device(this, 0x00c4, 0x00c7, 0, 0, FUNC(p1_FDC_r), FUNC(p1_FDC_w) ); m_fdc->setup_drq_cb(fd1793_t::line_cb(FUNC(p1_fdc_device::p1_fdc_irq_drq), this)); m_fdc->setup_intrq_cb(fd1793_t::line_cb(FUNC(p1_fdc_device::p1_fdc_irq_drq), this)); } //------------------------------------------------- // device_reset - device-specific reset //------------------------------------------------- void p1_fdc_device::device_reset() { }