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// license:BSD-3-Clause
// copyright-holders:Robbbert
/***************************************************************************
Jade JGZ80 (with Serial Parallel Interrupt Controller)
Single board Z80 computer on a S100 card.
The SPIO board adds four CTCs, two SIOs and one PIO.
2013-09-12 Skeleton driver.
No info found as yet.
It takes about 8 seconds to start up.
Type HE to get a list of commands.
****************************************************************************/
#include "emu.h"
#include "cpu/z80/z80.h"
#include "machine/clock.h"
#include "machine/z80ctc.h"
#include "machine/z80sio.h"
#include "bus/rs232/rs232.h"
//#include "bus/s100/s100.h"
class jade_state : public driver_device
{
public:
jade_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
{ }
void jade(machine_config &config);
private:
required_device<cpu_device> m_maincpu;
};
static ADDRESS_MAP_START(mem_map, AS_PROGRAM, 8, jade_state)
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x0000, 0x07ff) AM_ROM AM_REGION("roms", 0)
AM_RANGE(0x0800, 0xffff) AM_RAM
ADDRESS_MAP_END
static ADDRESS_MAP_START(io_map, AS_IO, 8, jade_state)
ADDRESS_MAP_UNMAP_HIGH
ADDRESS_MAP_GLOBAL_MASK(0xff)
AM_RANGE(0x28, 0x2b) AM_DEVREADWRITE("ctc2", z80ctc_device, read, write)
AM_RANGE(0x30, 0x33) AM_DEVREADWRITE("sio", z80sio_device, cd_ba_r, cd_ba_w)
AM_RANGE(0x40, 0x43) AM_DEVREADWRITE("ctc1", z80ctc_device, read, write)
ADDRESS_MAP_END
/* Input ports */
static INPUT_PORTS_START( jade )
INPUT_PORTS_END
MACHINE_CONFIG_START(jade_state::jade)
/* basic machine hardware */
MCFG_CPU_ADD("maincpu",Z80, XTAL(4'000'000))
MCFG_CPU_PROGRAM_MAP(mem_map)
MCFG_CPU_IO_MAP(io_map)
MCFG_DEVICE_ADD("ctc1", Z80CTC, XTAL(4'000'000))
MCFG_DEVICE_ADD("ctc2", Z80CTC, XTAL(4'000'000))
MCFG_Z80CTC_ZC0_CB(DEVWRITELINE("sio", z80sio_device, rxca_w))
MCFG_DEVCB_CHAIN_OUTPUT(DEVWRITELINE("sio", z80sio_device, txca_w))
MCFG_DEVICE_ADD("trg0", CLOCK, XTAL(4'000'000) / 2)
MCFG_CLOCK_SIGNAL_HANDLER(DEVWRITELINE("ctc2", z80ctc_device, trg0))
/* Devices */
MCFG_DEVICE_ADD("sio", Z80SIO, XTAL(4'000'000))
//MCFG_Z80SIO_OUT_INT_CB(INPUTLINE("maincpu", INPUT_LINE_IRQ0)) // no evidence of a daisy chain because IM2 is not set
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))
MACHINE_CONFIG_END
/* ROM definition */
ROM_START( jgz80 )
ROM_REGION( 0x800, "roms", 0 )
ROM_LOAD( "jgz80.rom", 0x0000, 0x0800, CRC(90c4a1ef) SHA1(8a93a11051cc27f3edca24f0f4297ebe0099964e) )
ROM_END
/* Driver */
// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
COMP( 1983, jgz80, 0, 0, jade, jade, jade_state, 0, "Jade Computer Products", "JGZ80", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW )
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