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/**********************************************************************
SSE SoftBox emulation
Copyright MESS Team.
Visit http://mamedev.org for licensing and usage restrictions.
**********************************************************************/
#include "softbox.h"
//**************************************************************************
// MACROS / CONSTANTS
//**************************************************************************
#define Z80_TAG "z80"
#define I8251_TAG "ic15"
#define I8255_0_TAG "ic17"
#define I8255_1_TAG "ic16"
#define COM8116_TAG "ic14"
#define RS232_TAG "rs232"
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
const device_type SOFTBOX = &device_creator<softbox_device>;
//-------------------------------------------------
// ROM( softbox )
//-------------------------------------------------
ROM_START( softbox )
ROM_REGION( 0x1000, Z80_TAG, 0 )
ROM_DEFAULT_BIOS("830609")
ROM_SYSTEM_BIOS( 0, "811027", "27-Oct-81" )
ROMX_LOAD( "379.ic3", 0x000, 0x800, CRC(7b5a737c) SHA1(2348590884b026b7647f6864af8c9ba1c6f8746b), ROM_BIOS(1) )
ROMX_LOAD( "380.ic4", 0x800, 0x800, CRC(65a13029) SHA1(46de02e6f04be298047efeb412e00a5714dc21b3), ROM_BIOS(1) )
ROM_SYSTEM_BIOS( 1, "830609", "09-June-1983" )
ROMX_LOAD( "389.ic3", 0x000, 0x800, CRC(d66e581a) SHA1(2403e25c140c41b0e6d6975d39c9cd9d6f335048), ROM_BIOS(2) )
ROMX_LOAD( "390.ic4", 0x800, 0x800, CRC(abe6cb30) SHA1(4b26d5db36f828e01268f718799f145d09b449ad), ROM_BIOS(2) )
ROM_END
//-------------------------------------------------
// rom_region - device-specific ROM region
//-------------------------------------------------
const rom_entry *softbox_device::device_rom_region() const
{
return ROM_NAME( softbox );
}
//-------------------------------------------------
// ADDRESS_MAP( softbox_mem )
//-------------------------------------------------
static ADDRESS_MAP_START( softbox_mem, AS_PROGRAM, 8, softbox_device )
AM_RANGE(0x0000, 0xefff) AM_RAM
AM_RANGE(0xf000, 0xffff) AM_ROM AM_REGION(Z80_TAG, 0)
ADDRESS_MAP_END
//-------------------------------------------------
// ADDRESS_MAP( softbox_io )
//-------------------------------------------------
static ADDRESS_MAP_START( softbox_io, AS_IO, 8, softbox_device )
ADDRESS_MAP_GLOBAL_MASK(0xff)
AM_RANGE(0x08, 0x08) AM_DEVREADWRITE(I8251_TAG, i8251_device, data_r, data_w)
AM_RANGE(0x09, 0x09) AM_DEVREADWRITE(I8251_TAG, i8251_device, status_r, control_w)
AM_RANGE(0x0c, 0x0c) AM_WRITE(dbrg_w)
AM_RANGE(0x10, 0x13) AM_DEVREADWRITE(I8255_0_TAG, i8255_device, read, write)
AM_RANGE(0x14, 0x17) AM_DEVREADWRITE(I8255_1_TAG, i8255_device, read, write)
AM_RANGE(0x18, 0x18) AM_READWRITE_LEGACY(corvus_hdc_data_r, corvus_hdc_data_w)
ADDRESS_MAP_END
//-------------------------------------------------
// i8251_interface usart_intf
//-------------------------------------------------
static const i8251_interface usart_intf =
{
DEVCB_DEVICE_LINE_MEMBER(RS232_TAG, serial_port_device, rx),
DEVCB_DEVICE_LINE_MEMBER(RS232_TAG, serial_port_device, tx),
DEVCB_DEVICE_LINE_MEMBER(RS232_TAG, rs232_port_device, dsr_r),
DEVCB_DEVICE_LINE_MEMBER(RS232_TAG, rs232_port_device, dtr_w),
DEVCB_DEVICE_LINE_MEMBER(RS232_TAG, rs232_port_device, rts_w),
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL
};
//-------------------------------------------------
// I8255A_INTERFACE( ppi0_intf )
//-------------------------------------------------
READ8_MEMBER( softbox_device::ppi0_pa_r )
{
return m_bus->dio_r() ^ 0xff;
}
WRITE8_MEMBER( softbox_device::ppi0_pb_w )
{
m_bus->dio_w(this, data ^ 0xff);
}
static I8255A_INTERFACE( ppi0_intf )
{
DEVCB_DEVICE_MEMBER(DEVICE_SELF_OWNER, softbox_device, ppi0_pa_r),
DEVCB_NULL, // Port A write
DEVCB_NULL, // Port B read
DEVCB_DEVICE_MEMBER(DEVICE_SELF_OWNER, softbox_device, ppi0_pb_w),
DEVCB_INPUT_PORT("SW1"), // Port C read
DEVCB_NULL // Port C write
};
//-------------------------------------------------
// I8255A_INTERFACE( ppi1_intf )
//-------------------------------------------------
READ8_MEMBER( softbox_device::ppi1_pa_r )
{
/*
bit description
PA0 ATN
PA1 DAV
PA2 NDAC
PA3 NRFD
PA4 EOI
PA5 SRQ
PA6 REN
PA7 IFC
*/
UINT8 data = 0;
data |= !m_bus->atn_r();
data |= !m_bus->dav_r() << 1;
data |= !m_bus->ndac_r() << 2;
data |= !m_bus->nrfd_r() << 3;
data |= !m_bus->eoi_r() << 4;
data |= !m_bus->srq_r() << 5;
data |= !m_bus->ren_r() << 6;
data |= !m_bus->ifc_r() << 7;
return data;
}
WRITE8_MEMBER( softbox_device::ppi1_pb_w )
{
/*
bit description
PB0 ATN
PB1 DAV
PB2 NDAC
PB3 NRFD
PB4 EOI
PB5 SRQ
PB6 REN
PB7 IFC
*/
m_bus->atn_w(this, !BIT(data, 0));
m_bus->dav_w(this, !BIT(data, 1));
m_bus->ndac_w(this, !BIT(data, 2));
m_bus->nrfd_w(this, !BIT(data, 3));
m_bus->eoi_w(this, !BIT(data, 4));
m_bus->srq_w(this, !BIT(data, 5));
m_bus->ren_w(this, !BIT(data, 6));
m_bus->ifc_w(this, !BIT(data, 7));
}
READ8_MEMBER( softbox_device::ppi1_pc_r )
{
/*
bit description
PC0
PC1
PC2
PC3
PC4 Corvus READY
PC5 Corvus DIRC
PC6
PC7
*/
UINT8 status = corvus_hdc_status_r(space, 0);
UINT8 data = 0;
data |= (status & CONTROLLER_BUSY) ? 0 : 0x10;
data |= (status & CONTROLLER_DIRECTION) ? 0 : 0x20;
return data;
}
WRITE8_MEMBER( softbox_device::ppi1_pc_w )
{
/*
bit description
PC0 LED "A"
PC1 LED "B"
PC2 LED "READY"
PC3
PC4
PC5
PC6
PC7
*/
output_set_led_value(LED_A, !BIT(data, 0));
output_set_led_value(LED_B, !BIT(data, 1));
output_set_led_value(LED_READY, !BIT(data, 2));
}
static I8255A_INTERFACE( ppi1_intf )
{
DEVCB_DEVICE_MEMBER(DEVICE_SELF_OWNER, softbox_device, ppi1_pa_r),
DEVCB_NULL, // Port A write
DEVCB_NULL, // Port B read
DEVCB_DEVICE_MEMBER(DEVICE_SELF_OWNER, softbox_device, ppi1_pb_w),
DEVCB_DEVICE_MEMBER(DEVICE_SELF_OWNER, softbox_device, ppi1_pc_r),
DEVCB_DEVICE_MEMBER(DEVICE_SELF_OWNER, softbox_device, ppi1_pc_w)
};
//-------------------------------------------------
// COM8116_INTERFACE( dbrg_intf )
//-------------------------------------------------
static COM8116_INTERFACE( dbrg_intf )
{
DEVCB_NULL, // fX/4
DEVCB_DEVICE_LINE_MEMBER(I8251_TAG, i8251_device, rxc_w),
DEVCB_DEVICE_LINE_MEMBER(I8251_TAG, i8251_device, txc_w),
COM8116_DIVISORS_16X_5_0688MHz, // receiver
COM8116_DIVISORS_16X_5_0688MHz // transmitter
};
//-------------------------------------------------
// rs232_port_interface rs232_intf
//-------------------------------------------------
static const rs232_port_interface rs232_intf =
{
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL
};
//-------------------------------------------------
// MACHINE_CONFIG_FRAGMENT( softbox )
//-------------------------------------------------
static MACHINE_CONFIG_FRAGMENT( softbox )
// basic machine hardware
MCFG_CPU_ADD(Z80_TAG, Z80, 4000000) // ???
MCFG_CPU_PROGRAM_MAP(softbox_mem)
MCFG_CPU_IO_MAP(softbox_io)
// devices
MCFG_I8251_ADD(I8251_TAG, usart_intf)
MCFG_I8255A_ADD(I8255_0_TAG, ppi0_intf)
MCFG_I8255A_ADD(I8255_1_TAG, ppi1_intf)
MCFG_COM8116_ADD(COM8116_TAG, XTAL_5_0688MHz, dbrg_intf)
MCFG_HARDDISK_ADD("harddisk1")
MCFG_RS232_PORT_ADD(RS232_TAG, rs232_intf, default_rs232_devices, NULL)
MACHINE_CONFIG_END
//-------------------------------------------------
// machine_config_additions - device-specific
// machine configurations
//-------------------------------------------------
machine_config_constructor softbox_device::device_mconfig_additions() const
{
return MACHINE_CONFIG_NAME( softbox );
}
//-------------------------------------------------
// INPUT_PORTS( softbox )
//-------------------------------------------------
INPUT_PORTS_START( softbox )
PORT_START("SW1")
PORT_DIPUNKNOWN_DIPLOC( 0x01, IP_ACTIVE_LOW, "SW1:1" )
PORT_DIPUNKNOWN_DIPLOC( 0x02, IP_ACTIVE_LOW, "SW1:2" )
PORT_DIPUNKNOWN_DIPLOC( 0x04, IP_ACTIVE_LOW, "SW1:3" )
PORT_DIPUNKNOWN_DIPLOC( 0x08, IP_ACTIVE_LOW, "SW1:4" )
PORT_DIPUNKNOWN_DIPLOC( 0x10, IP_ACTIVE_LOW, "SW1:5" )
PORT_DIPUNKNOWN_DIPLOC( 0x20, IP_ACTIVE_LOW, "SW1:6" )
PORT_DIPUNKNOWN_DIPLOC( 0x40, IP_ACTIVE_LOW, "SW1:7" )
PORT_DIPUNKNOWN_DIPLOC( 0x80, IP_ACTIVE_LOW, "SW1:8" )
INPUT_PORTS_END
//-------------------------------------------------
// input_ports - device-specific input ports
//-------------------------------------------------
ioport_constructor softbox_device::device_input_ports() const
{
return INPUT_PORTS_NAME( softbox );
}
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// softbox_device - constructor
//-------------------------------------------------
softbox_device::softbox_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
: device_t(mconfig, SOFTBOX, "PET SoftBox", tag, owner, clock, "pet_softbox", __FILE__),
device_ieee488_interface(mconfig, *this),
m_dbrg(*this, COM8116_TAG)
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void softbox_device::device_start()
{
corvus_hdc_init(machine());
}
//-------------------------------------------------
// dbrg_w - baud rate selection
//-------------------------------------------------
WRITE8_MEMBER( softbox_device::dbrg_w )
{
m_dbrg->str_w(data & 0x0f);
m_dbrg->stt_w(data >> 4);
}
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