// license:BSD-3-Clause // copyright-holders:Robbbert /*************************************************************************** CCS Model 300 2009-12-11 Skeleton driver. It requires a floppy disk to boot from. There's no info available on this system, however the bankswitching appears to be the same as their other systems. Early on, it does a read from port F2. If bit 3 is low, the system becomes a Model 400. Since IM2 is used, it is assumed there are Z80 peripherals on board. ****************************************************************************/ #include "emu.h" #include "cpu/z80/z80.h" #include "cpu/z80/z80daisy.h" #include "machine/z80ctc.h" #include "machine/z80pio.h" #include "machine/z80sio.h" #include "machine/clock.h" #include "bus/rs232/rs232.h" class ccs300_state : public driver_device { public: ccs300_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") { } DECLARE_DRIVER_INIT(ccs300); DECLARE_MACHINE_RESET(ccs300); DECLARE_WRITE8_MEMBER(port40_w); void ccs300(machine_config &config); void ccs300_io(address_map &map); void ccs300_mem(address_map &map); private: required_device m_maincpu; }; void ccs300_state::ccs300_mem(address_map &map) { map.unmap_value_high(); map(0x0000, 0x07ff).bankr("bankr0").bankw("bankw0"); map(0x0800, 0xffff).ram(); } void ccs300_state::ccs300_io(address_map &map) { map.unmap_value_high(); map.global_mask(0xff); map(0x10, 0x13).rw("sio", FUNC(z80sio_device::ba_cd_r), FUNC(z80sio_device::ba_cd_w)); map(0x14, 0x17).rw("pio", FUNC(z80pio_device::read_alt), FUNC(z80pio_device::write_alt)); // init bytes seem to be for a PIO map(0x18, 0x1b).rw("ctc", FUNC(z80ctc_device::read), FUNC(z80ctc_device::write)); // init bytes seem to be for a CTC map(0x30, 0x33); // fdc? map(0x34, 0x34); // motor control? map(0x40, 0x40).w(this, FUNC(ccs300_state::port40_w)); map(0xf0, 0xf0); // unknown, long sequence of init bytes map(0xf2, 0xf2); // dip or jumper? } /* Input ports */ static INPUT_PORTS_START( ccs300 ) INPUT_PORTS_END static const z80_daisy_config daisy_chain[] = { { "ctc" }, { "sio" }, { "pio" }, { nullptr } }; //************************************* // // Machine // //************************************* WRITE8_MEMBER( ccs300_state::port40_w ) { membank("bankr0")->set_entry( (data) ? 1 : 0); } MACHINE_RESET_MEMBER( ccs300_state, ccs300 ) { membank("bankr0")->set_entry(0); // point at rom membank("bankw0")->set_entry(0); // always write to ram } DRIVER_INIT_MEMBER( ccs300_state, ccs300 ) { uint8_t *main = memregion("maincpu")->base(); membank("bankr0")->configure_entry(1, &main[0x0000]); membank("bankr0")->configure_entry(0, &main[0x10000]); membank("bankw0")->configure_entry(0, &main[0x0000]); } // bit 7 needs to be stripped off, we do this by choosing 7 bits and even parity static DEVICE_INPUT_DEFAULTS_START( terminal ) DEVICE_INPUT_DEFAULTS( "RS232_RXBAUD", 0xff, RS232_BAUD_9600 ) DEVICE_INPUT_DEFAULTS( "RS232_TXBAUD", 0xff, RS232_BAUD_9600 ) DEVICE_INPUT_DEFAULTS( "RS232_STARTBITS", 0xff, RS232_STARTBITS_1 ) DEVICE_INPUT_DEFAULTS( "RS232_DATABITS", 0xff, RS232_DATABITS_7 ) DEVICE_INPUT_DEFAULTS( "RS232_PARITY", 0xff, RS232_PARITY_EVEN ) DEVICE_INPUT_DEFAULTS( "RS232_STOPBITS", 0xff, RS232_STOPBITS_2 ) DEVICE_INPUT_DEFAULTS_END MACHINE_CONFIG_START(ccs300_state::ccs300) /* basic machine hardware */ MCFG_CPU_ADD("maincpu",Z80, XTAL(4'000'000)) MCFG_CPU_PROGRAM_MAP(ccs300_mem) MCFG_CPU_IO_MAP(ccs300_io) MCFG_Z80_DAISY_CHAIN(daisy_chain) MCFG_MACHINE_RESET_OVERRIDE(ccs300_state, ccs300) /* video hardware */ MCFG_DEVICE_ADD("uart_clock", CLOCK, 153600) MCFG_CLOCK_SIGNAL_HANDLER(DEVWRITELINE("sio", z80sio_device, txca_w)) MCFG_DEVCB_CHAIN_OUTPUT(DEVWRITELINE("sio", z80sio_device, rxca_w)) /* Devices */ MCFG_DEVICE_ADD("sio", Z80SIO, XTAL(4'000'000)) MCFG_Z80SIO_OUT_INT_CB(INPUTLINE("maincpu", INPUT_LINE_IRQ0)) MCFG_Z80SIO_OUT_TXDA_CB(DEVWRITELINE("rs232", rs232_port_device, write_txd)) MCFG_Z80SIO_OUT_DTRA_CB(DEVWRITELINE("rs232", rs232_port_device, write_dtr)) MCFG_Z80SIO_OUT_RTSA_CB(DEVWRITELINE("rs232", rs232_port_device, write_rts)) MCFG_RS232_PORT_ADD("rs232", default_rs232_devices, "terminal") MCFG_RS232_RXD_HANDLER(DEVWRITELINE("sio", z80sio_device, rxa_w)) MCFG_RS232_CTS_HANDLER(DEVWRITELINE("sio", z80sio_device, ctsa_w)) MCFG_SLOT_OPTION_DEVICE_INPUT_DEFAULTS("terminal", terminal) // must be exactly here MCFG_DEVICE_ADD("ctc", Z80CTC, XTAL(4'000'000)) MCFG_Z80CTC_INTR_CB(INPUTLINE("maincpu", INPUT_LINE_IRQ0)) MCFG_DEVICE_ADD("pio", Z80PIO, XTAL(4'000'000)) MCFG_Z80PIO_OUT_INT_CB(INPUTLINE("maincpu", INPUT_LINE_IRQ0)) MACHINE_CONFIG_END /* ROM definition */ ROM_START( ccs300 ) ROM_REGION( 0x10800, "maincpu", ROMREGION_ERASEFF ) ROM_LOAD( "ccs300.rom", 0x10000, 0x0800, CRC(6cf22e31) SHA1(9aa3327cd8c23d0eab82cb6519891aff13ebe1d0)) ROM_END /* Driver */ /* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */ COMP( 19??, ccs300, ccs2810, 0, ccs300, ccs300, ccs300_state, ccs300, "California Computer Systems", "CCS Model 300", MACHINE_IS_SKELETON )