// license:BSD-3-Clause // copyright-holders:Nigel Barnes /********************************************************************** United Disk Memories DDFS FDC Microware DDFS FDC **********************************************************************/ #include "emu.h" #include "microware.h" //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** DEFINE_DEVICE_TYPE(BBC_MICROWARE, bbc_microware_device, "bbc_microware", "Microware DDFS FDC") //------------------------------------------------- // MACHINE_DRIVER( microware ) //------------------------------------------------- FLOPPY_FORMATS_MEMBER( bbc_microware_device::floppy_formats ) FLOPPY_ACORN_SSD_FORMAT, FLOPPY_ACORN_DSD_FORMAT, FLOPPY_FSD_FORMAT FLOPPY_FORMATS_END static void bbc_floppies_525(device_slot_interface &device) { device.option_add("525sssd", FLOPPY_525_SSSD); device.option_add("525sd", FLOPPY_525_SD); device.option_add("525ssdd", FLOPPY_525_SSDD); device.option_add("525dd", FLOPPY_525_DD); device.option_add("525qd", FLOPPY_525_QD); } ROM_START( microware ) ROM_REGION(0x4000, "dfs_rom", 0) ROM_DEFAULT_BIOS("udm200") ROM_SYSTEM_BIOS(0, "ddfs090", "Microware DDFS 0.90") ROMX_LOAD("microware_ddfs090.rom", 0x0000, 0x4000, CRC(700d50e5) SHA1(6834e46cb15354003d553e6c2bdb4ed76b47a465), ROM_BIOS(0)) ROM_SYSTEM_BIOS(1, "udm200", "UDM DDFS 2.00") ROMX_LOAD("udm_ddfs200.rom", 0x0000, 0x4000, CRC(1b4708a2) SHA1(0f37bcc73a758657cfe58c19f0cc92be9107e767), ROM_BIOS(1)) ROM_END //------------------------------------------------- // device_add_mconfig - add device configuration //------------------------------------------------- void bbc_microware_device::device_add_mconfig(machine_config &config) { WD2793(config, m_fdc, DERIVED_CLOCK(1, 8)); // Replay advert suggests Type R8272 UDM DFS m_fdc->intrq_wr_callback().set(DEVICE_SELF_OWNER, FUNC(bbc_fdc_slot_device::intrq_w)); m_fdc->drq_wr_callback().set(DEVICE_SELF_OWNER, FUNC(bbc_fdc_slot_device::drq_w)); m_fdc->hld_wr_callback().set(FUNC(bbc_microware_device::motor_w)); FLOPPY_CONNECTOR(config, m_floppy0, bbc_floppies_525, "525qd", floppy_formats).enable_sound(true); FLOPPY_CONNECTOR(config, m_floppy1, bbc_floppies_525, "525qd", floppy_formats).enable_sound(true); } const tiny_rom_entry *bbc_microware_device::device_rom_region() const { return ROM_NAME( microware ); } //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // bbc_microware_device - constructor //------------------------------------------------- bbc_microware_device::bbc_microware_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : device_t(mconfig, BBC_MICROWARE, tag, owner, clock) , device_bbc_fdc_interface(mconfig, *this) , m_fdc(*this, "wd2793") , m_floppy0(*this, "wd2793:0") , m_floppy1(*this, "wd2793:1") , m_drive_control(0) { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void bbc_microware_device::device_start() { save_item(NAME(m_drive_control)); } //************************************************************************** // IMPLEMENTATION //************************************************************************** uint8_t bbc_microware_device::read(offs_t offset) { uint8_t data; if (offset & 0x04) { data = m_fdc->read(offset & 0x03); } else { data = m_drive_control; } return data; } void bbc_microware_device::write(offs_t offset, uint8_t data) { if (offset & 0x04) { m_fdc->write(offset & 0x03, data); } else { floppy_image_device *floppy = nullptr; m_drive_control = data; logerror("fdc: Drive control %02x \n", data); // bit 0: drive select switch (BIT(data, 0)) { case 0: floppy = m_floppy0->get_device(); break; case 1: floppy = m_floppy1->get_device(); break; } m_fdc->set_floppy(floppy); // bit 1: side select if (floppy) floppy->ss_w(BIT(data, 1)); // bit 2: density m_fdc->dden_w(BIT(data, 2)); // bit 3: always set ??? // bit 4: ??? interrupt } } WRITE_LINE_MEMBER(bbc_microware_device::motor_w) { if (m_floppy0->get_device()) m_floppy0->get_device()->mon_w(!state); if (m_floppy1->get_device()) m_floppy1->get_device()->mon_w(!state); }