// license:BSD-3-Clause // copyright-holders:Barry Rodewald /* * cpc_rs232.c * * Created on: 22/04/2014 */ #include "emu.h" #include "cpc_rs232.h" SLOT_INTERFACE_EXTERN(cpc_exp_cards); //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** const device_type CPC_RS232 = device_creator; const device_type CPC_RS232_AMS = device_creator; // device machine config static MACHINE_CONFIG_FRAGMENT( cpc_rs232 ) MCFG_DEVICE_ADD("pit", PIT8253, 0) MCFG_PIT8253_CLK0(2000000) MCFG_PIT8253_CLK1(2000000) MCFG_PIT8253_CLK2(2000000) MCFG_PIT8253_OUT0_HANDLER(WRITELINE(cpc_rs232_device, pit_out0_w)) MCFG_PIT8253_OUT1_HANDLER(WRITELINE(cpc_rs232_device, pit_out1_w)) MCFG_PIT8253_OUT2_HANDLER(WRITELINE(cpc_rs232_device, pit_out2_w)) MCFG_Z80DART_ADD("dart", XTAL_4MHz, 0, 0, 0, 0 ) MCFG_Z80DART_OUT_TXDA_CB(DEVWRITELINE("rs232", rs232_port_device, write_txd)) MCFG_Z80DART_OUT_DTRA_CB(DEVWRITELINE("rs232", rs232_port_device, write_dtr)) MCFG_Z80DART_OUT_RTSA_CB(DEVWRITELINE("rs232", rs232_port_device, write_rts)) MCFG_RS232_PORT_ADD("rs232",default_rs232_devices,nullptr) MCFG_RS232_RXD_HANDLER(DEVWRITELINE("dart",z80dart_device,rxa_w)) MCFG_RS232_DCD_HANDLER(DEVWRITELINE("dart",z80dart_device,dcda_w)) MCFG_RS232_CTS_HANDLER(DEVWRITELINE("dart",z80dart_device,ctsa_w)) // MCFG_RS232_RI_HANDLER(DEVWRITELINE("dart",z80dart_device,ria_w)) // 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 ROM_START( cpc_rs232 ) ROM_REGION( 0x8000, "exp_rom", 0 ) ROM_LOAD( "comstar1.rom", 0x0000, 0x4000, CRC(ddcade50) SHA1(d09ee0bd51a8e1cafc5107a75fed839dda3d21e5) ) ROM_LOAD( "comstar2.rom", 0x4000, 0x4000, CRC(664e788c) SHA1(13d033f2d1cad70140deb903d787ba514f236a59) ) ROM_END ROM_START( cpc_rs232_ams ) ROM_REGION( 0x4000, "exp_rom", 0 ) ROM_SYSTEM_BIOS( 0, "amstrad", "Amstrad RS232C interface (v1)" ) ROMX_LOAD( "rs232101.rom", 0x0000, 0x2000, CRC(c6eb52b2) SHA1(8a7e0a1183fdde8d07bc8827a3e159ca3022f93b), ROM_BIOS(1) ) ROM_SYSTEM_BIOS( 1, "mercitel", "Amstrad RS232C interface (v1) + Mercitel (v1.4)" ) ROMX_LOAD( "rs232mercitel14.rom", 0x0000, 0x4000, CRC(8ffb114b) SHA1(145233fe8d4db9f5265eeac767d8ee8d45d14755), ROM_BIOS(2) ) ROM_END machine_config_constructor cpc_rs232_device::device_mconfig_additions() const { return MACHINE_CONFIG_NAME( cpc_rs232 ); } const tiny_rom_entry *cpc_rs232_device::device_rom_region() const { return ROM_NAME( cpc_rs232 ); } const tiny_rom_entry *cpc_ams_rs232_device::device_rom_region() const { return ROM_NAME( cpc_rs232_ams ); } //************************************************************************** // LIVE DEVICE //************************************************************************** cpc_rs232_device::cpc_rs232_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : device_t(mconfig, CPC_RS232, "Pace RS232C interface", tag, owner, clock, "cpc_ser", __FILE__), device_cpc_expansion_card_interface(mconfig, *this), m_pit(*this,"pit"), m_dart(*this,"dart"), m_rs232(*this,"rs232"), m_slot(nullptr) { } cpc_rs232_device::cpc_rs232_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, uint32_t clock, const char *shortname, const char *source) : device_t(mconfig, type, name, tag, owner, clock, shortname, source), device_cpc_expansion_card_interface(mconfig, *this), m_pit(*this,"pit"), m_dart(*this,"dart"), m_rs232(*this,"rs232"), m_slot(nullptr) { } cpc_ams_rs232_device::cpc_ams_rs232_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : cpc_rs232_device(mconfig, CPC_RS232_AMS, "Amstrad RS232C interface", tag, owner, clock, "cpc_serams", __FILE__) { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void cpc_rs232_device::device_start() { device_t* cpu = machine().device("maincpu"); address_space& space = cpu->memory().space(AS_IO); m_slot = dynamic_cast(owner()); space.install_readwrite_handler(0xfadc,0xfadf,read8_delegate(FUNC(cpc_rs232_device::dart_r),this),write8_delegate(FUNC(cpc_rs232_device::dart_w),this)); space.install_readwrite_handler(0xfbdc,0xfbdf,read8_delegate(FUNC(cpc_rs232_device::pit_r),this),write8_delegate(FUNC(cpc_rs232_device::pit_w),this)); } //------------------------------------------------- // device_reset - device-specific reset //------------------------------------------------- void cpc_rs232_device::device_reset() { } WRITE_LINE_MEMBER(cpc_rs232_device::pit_out0_w) { m_dart->txca_w(state); } WRITE_LINE_MEMBER(cpc_rs232_device::pit_out1_w) { m_dart->rxca_w(state); } WRITE_LINE_MEMBER(cpc_rs232_device::pit_out2_w) { m_dart->txcb_w(state); m_dart->rxcb_w(state); } READ8_MEMBER(cpc_rs232_device::dart_r) { return m_dart->ba_cd_r(space,offset); } WRITE8_MEMBER(cpc_rs232_device::dart_w) { m_dart->ba_cd_w(space,offset,data); } READ8_MEMBER(cpc_rs232_device::pit_r) { return m_pit->read(space,offset); } WRITE8_MEMBER(cpc_rs232_device::pit_w) { m_pit->write(space,offset,data); }