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// license:BSD-3-Clause
// copyright-holders:Nigel Barnes
/**********************************************************************
Radofin Aquarius Quick Disk
Specifications:
Capacity 64K byte per side
Read/Write time 64K/8sec
Transmitting speed 101K [BPS]
Recording density 4410 [BPI]
Track density 59 [TPI]
Number of track 1 (spiral)
Recoding system MFM
Rotation speed 423 [RPM]
Disk 2.8"
Number of heads 1
TODO:
- floppy support (I/O 0xe6-0xe7 = drive 1, 0xea-0xeb = drive 2)
**********************************************************************/
#include "emu.h"
#include "qdisk.h"
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
DEFINE_DEVICE_TYPE(AQUARIUS_QDISK, aquarius_qdisk_device, "aquarius_qdisk", "Aquarius Quick Disk")
//-------------------------------------------------
// INPUT_PORTS( qdisk )
//-------------------------------------------------
static INPUT_PORTS_START(qdisk)
PORT_START("SW1")
PORT_DIPNAME(0x01, 0x00, "Drive Selection")
PORT_DIPSETTING(0x00, "1")
PORT_DIPSETTING(0x01, "2")
INPUT_PORTS_END
//-------------------------------------------------
// input_ports - device-specific input ports
//-------------------------------------------------
ioport_constructor aquarius_qdisk_device::device_input_ports() const
{
return INPUT_PORTS_NAME(qdisk);
}
//-------------------------------------------------
// device_add_mconfig - add device configuration
//-------------------------------------------------
void aquarius_qdisk_device::device_add_mconfig(machine_config &config)
{
MC6852(config, m_ssda, 6.5_MHz_XTAL);
AQUARIUS_CARTRIDGE_SLOT(config, m_exp, DERIVED_CLOCK(1,1), aquarius_cartridge_devices, nullptr);
m_exp->irq_handler().set(DEVICE_SELF_OWNER, FUNC(aquarius_cartridge_slot_device::irq_w));
m_exp->nmi_handler().set(DEVICE_SELF_OWNER, FUNC(aquarius_cartridge_slot_device::nmi_w));
}
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// aquarius_qdisk_device - constructor
//-------------------------------------------------
aquarius_qdisk_device::aquarius_qdisk_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: device_t(mconfig, AQUARIUS_QDISK, tag, owner, clock)
, device_aquarius_cartridge_interface(mconfig, *this)
, m_ssda(*this, "mc6852")
, m_exp(*this, "exp")
, m_sw1(*this, "SW1")
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void aquarius_qdisk_device::device_start()
{
}
//**************************************************************************
// IMPLEMENTATION
//**************************************************************************
uint8_t aquarius_qdisk_device::mreq_r(offs_t offset)
{
return m_exp->mreq_r(offset);
}
void aquarius_qdisk_device::mreq_w(offs_t offset, uint8_t data)
{
m_exp->mreq_w(offset, data);
}
uint8_t aquarius_qdisk_device::mreq_ce_r(offs_t offset)
{
uint8_t data = get_rom_base()[offset & 0x1fff];
data &= m_exp->mreq_ce_r(offset);
return data;
}
void aquarius_qdisk_device::mreq_ce_w(offs_t offset, uint8_t data)
{
m_exp->mreq_ce_w(offset, data);
}
uint8_t aquarius_qdisk_device::iorq_r(offs_t offset)
{
uint8_t data = m_exp->iorq_r(offset);
switch (offset & 0xfe)
{
case 0xe6: case 0xea:
if (BIT(offset, 3) == m_sw1->read())
{
data = m_ssda->read(offset & 0x01);
}
logerror("iorq_r: %02x = %02x\n", offset, data);
break;
}
data &= m_exp->iorq_r(offset);
return data;
}
void aquarius_qdisk_device::iorq_w(offs_t offset, uint8_t data)
{
switch (offset & 0xfe)
{
case 0xe6: case 0xea:
if (BIT(offset, 3) == m_sw1->read())
{
m_ssda->write(offset & 0x01, data);
}
logerror("iorq_w: %02x = %02x\n", offset, data);
break;
}
m_exp->iorq_w(offset, data);
}
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