// license:BSD-3-Clause // copyright-holders:Barry Rodewald /* * ddi1.c -- Amstrad DDI-1 Floppy Disk Drive interface */ #include "emu.h" #include "ddi1.h" #include "includes/amstrad.h" #include "softlist.h" //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** const device_type CPC_DDI1 = &device_creator; static SLOT_INTERFACE_START( ddi1_floppies ) SLOT_INTERFACE( "3ssdd", FLOPPY_3_SSDD ) SLOT_INTERFACE_END //------------------------------------------------- // Device ROM definition //------------------------------------------------- ROM_START( cpc_ddi1 ) ROM_REGION( 0x4000, "disc_rom", 0 ) ROM_LOAD("cpcados.rom", 0x0000, 0x4000, CRC(1fe22ecd) SHA1(39102c8e9cb55fcc0b9b62098780ed4a3cb6a4bb)) ROM_END //------------------------------------------------- // rom_region - device-specific ROM region //------------------------------------------------- const rom_entry *cpc_ddi1_device::device_rom_region() const { return ROM_NAME( cpc_ddi1 ); } // device machine config static MACHINE_CONFIG_FRAGMENT( cpc_ddi1 ) MCFG_UPD765A_ADD("upd765", true, true) MCFG_FLOPPY_DRIVE_ADD("upd765:0", ddi1_floppies, "3ssdd", floppy_image_device::default_floppy_formats) MCFG_SOFTWARE_LIST_ADD("flop_list","cpc_flop") // pass-through MCFG_DEVICE_ADD("exp", CPC_EXPANSION_SLOT, 0) MCFG_DEVICE_SLOT_INTERFACE(cpc_exp_cards, nullptr, false) MCFG_CPC_EXPANSION_SLOT_OUT_IRQ_CB(DEVWRITELINE("^", cpc_expansion_slot_device, irq_w)) MCFG_CPC_EXPANSION_SLOT_OUT_NMI_CB(DEVWRITELINE("^", cpc_expansion_slot_device, nmi_w)) MCFG_CPC_EXPANSION_SLOT_OUT_ROMDIS_CB(DEVWRITELINE("^", cpc_expansion_slot_device, romdis_w)) // ROMDIS MACHINE_CONFIG_END machine_config_constructor cpc_ddi1_device::device_mconfig_additions() const { return MACHINE_CONFIG_NAME( cpc_ddi1 ); } //************************************************************************** // LIVE DEVICE //************************************************************************** cpc_ddi1_device::cpc_ddi1_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : device_t(mconfig, CPC_DDI1, "DDI-1", tag, owner, clock, "cpc_ddi1", __FILE__), device_cpc_expansion_card_interface(mconfig, *this), m_slot(nullptr), m_fdc(*this,"upd765"), m_connector(*this,"upd765:0"), m_rom_active(false), m_romen(false) { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void cpc_ddi1_device::device_start() { device_t* cpu = machine().device("maincpu"); address_space& space = cpu->memory().space(AS_IO); m_slot = dynamic_cast(owner()); space.install_write_handler(0xfa7e,0xfa7f,0,0,write8_delegate(FUNC(cpc_ddi1_device::motor_w),this)); space.install_readwrite_handler(0xfb7e,0xfb7f,0,0,read8_delegate(FUNC(cpc_ddi1_device::fdc_r),this),write8_delegate(FUNC(cpc_ddi1_device::fdc_w),this)); space.install_write_handler(0xdf00,0xdfff,0,0,write8_delegate(FUNC(cpc_ddi1_device::rombank_w),this)); } //------------------------------------------------- // device_reset - device-specific reset //------------------------------------------------- void cpc_ddi1_device::device_reset() { m_rom_active = false; } WRITE8_MEMBER(cpc_ddi1_device::motor_w) { switch(offset) { case 0x00: case 0x01: { /* FDC Motor Control - Bit 0 defines the state of the FDD motor: * "1" the FDD motor will be active. * "0" the FDD motor will be in-active.*/ floppy_image_device *floppy; if(m_connector) { floppy = m_connector->get_device(); if(floppy) floppy->mon_w(!BIT(data, 0)); } break; } } } WRITE8_MEMBER(cpc_ddi1_device::fdc_w) { switch(offset) { case 0x01: m_fdc->fifo_w(space, 0,data); break; } } READ8_MEMBER(cpc_ddi1_device::fdc_r) { UINT8 data = 0xff; switch(offset) { case 0x00: data = m_fdc->msr_r(space, 0); break; case 0x01: data = m_fdc->fifo_r(space, 0); break; } return data; } WRITE8_MEMBER(cpc_ddi1_device::rombank_w) { if(data == 0x07) m_rom_active = true; else m_rom_active = false; m_slot->rom_select(space,0,data); } void cpc_ddi1_device::set_mapping(UINT8 type) { if(type != MAP_UPPER) return; if(m_rom_active) { UINT8* ROM = memregion("disc_rom")->base(); membank(":bank7")->set_base(ROM); membank(":bank8")->set_base(ROM+0x2000); } }