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// 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<cpu_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_DEVICE_ADD("maincpu",Z80, XTAL(4'000'000))
MCFG_DEVICE_PROGRAM_MAP(ccs300_mem)
MCFG_DEVICE_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(WRITELINE("sio", z80sio_device, txca_w))
MCFG_DEVCB_CHAIN_OUTPUT(WRITELINE("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(WRITELINE("rs232", rs232_port_device, write_txd))
MCFG_Z80SIO_OUT_DTRA_CB(WRITELINE("rs232", rs232_port_device, write_dtr))
MCFG_Z80SIO_OUT_RTSA_CB(WRITELINE("rs232", rs232_port_device, write_rts))
MCFG_DEVICE_ADD("rs232", RS232_PORT, default_rs232_devices, "terminal")
MCFG_RS232_RXD_HANDLER(WRITELINE("sio", z80sio_device, rxa_w))
MCFG_RS232_CTS_HANDLER(WRITELINE("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 )
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