diff options
Diffstat (limited to 'src/devices/bus/isa/side116.cpp')
-rw-r--r-- | src/devices/bus/isa/side116.cpp | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/src/devices/bus/isa/side116.cpp b/src/devices/bus/isa/side116.cpp new file mode 100644 index 00000000000..2de8254ffe4 --- /dev/null +++ b/src/devices/bus/isa/side116.cpp @@ -0,0 +1,190 @@ +// license:BSD-3-Clause +// copyright-holders:Dirk Best +/*************************************************************************** + + Acculogic sIDE-1/16 + + IDE Disk Controller for IBM PC, XT and compatibles + +***************************************************************************/ + +#include "side116.h" + + +//************************************************************************** +// DEVICE DEFINITIONS +//************************************************************************** + +const device_type ISA8_SIDE116 = &device_creator<side116_device>; + +//------------------------------------------------- +// machine_config_additions - device-specific +// machine configurations +//------------------------------------------------- + +static MACHINE_CONFIG_FRAGMENT( side116 ) + MCFG_ATA_INTERFACE_ADD("ata", ata_devices, "hdd", NULL, false) + MCFG_ATA_INTERFACE_IRQ_HANDLER(WRITELINE(side116_device, ide_interrupt)) +MACHINE_CONFIG_END + +machine_config_constructor side116_device::device_mconfig_additions() const +{ + return MACHINE_CONFIG_NAME( side116 ); +} + +//------------------------------------------------- +// input_ports - device-specific input ports +//------------------------------------------------- + +static INPUT_PORTS_START( side116 ) + PORT_START("configuration") + PORT_DIPNAME(0x01, 0x00, "sIDE-1/16 ROM") + PORT_DIPLOCATION("JP:1") + PORT_DIPSETTING(0x00, "Enabled") + PORT_DIPSETTING(0x01, "Disabled") + PORT_DIPNAME(0x06, 0x00, "sIDE-1/16 ROM Address") + PORT_DIPLOCATION("JP:2,3") + PORT_DIPSETTING(0x00, "Range C800h") + PORT_DIPSETTING(0x04, "Range CC00h") + PORT_DIPSETTING(0x02, "Range D800h") + PORT_DIPSETTING(0x06, "Range DC00h") + PORT_DIPNAME(0x18, 0x10, "sIDE-1/16 IDE IRQ") + PORT_DIPLOCATION("JP:4,5") + PORT_DIPSETTING(0x10, "Level 5") + PORT_DIPSETTING(0x08, "Level 2") + PORT_DIPNAME(0x20, 0x20, "sIDE-1/16 IDE") + PORT_DIPLOCATION("JP:6") + PORT_DIPSETTING(0x00, "Disabled") + PORT_DIPSETTING(0x20, "Enabled") +INPUT_PORTS_END + +ioport_constructor side116_device::device_input_ports() const +{ + return INPUT_PORTS_NAME( side116 ); +} + +//------------------------------------------------- +// rom_region - device-specific ROM region +//------------------------------------------------- + +ROM_START( side116 ) + ROM_REGION(0x2000, "option", 0) + ROM_LOAD("bios12.u2", 0x0000, 0x2000, CRC(c202a0e6) SHA1(a5b130a6d17c972d6c378cb2cd8113a4039631fe)) +ROM_END + +const rom_entry *side116_device::device_rom_region() const +{ + return ROM_NAME( side116 ); +} + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// side116_device - constructor +//------------------------------------------------- + +side116_device::side116_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : + device_t(mconfig, ISA8_SIDE116, "Acculogic sIDE-1/16 IDE Disk Controller", tag, owner, clock, "side116", __FILE__), + device_isa8_card_interface( mconfig, *this ), + m_ata(*this, "ata"), + m_config(*this, "configuration"), + m_latch(0xff) +{ +} + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void side116_device::device_start() +{ + set_isa_device(); +} + +//------------------------------------------------- +// device_reset - device-specific reset +//------------------------------------------------- + +void side116_device::device_reset() +{ + // install option rom + if ((m_config->read() & 0x01) == 0x00) + { + switch ((m_config->read() >> 1) & 0x03) + { + case 0: m_isa->install_rom(this, 0xc8000, 0xc9fff, 0, 0, "side116", "option"); break; + case 1: m_isa->install_rom(this, 0xd8000, 0xd9fff, 0, 0, "side116", "option"); break; + case 2: m_isa->install_rom(this, 0xcc000, 0xcdfff, 0, 0, "side116", "option"); break; + case 3: m_isa->install_rom(this, 0xdc000, 0xddfff, 0, 0, "side116", "option"); break; + } + } + + // install io access + if ((m_config->read() & 0x20) == 0x20) + m_isa->install_device(0x360, 0x36f, 0, 0, read8_delegate(FUNC(side116_device::read), this), write8_delegate(FUNC(side116_device::write), this)); +} + + +//************************************************************************** +// IDE INTERFACE +//************************************************************************** + +READ8_MEMBER( side116_device::read ) +{ + UINT8 data; + + if (offset == 0) + { + UINT16 ide_data = m_ata->read_cs0(space, 0, 0xffff); + data = ide_data & 0xff; + m_latch = ide_data >> 8; + } + else if (offset < 8) + { + data = m_ata->read_cs0(space, offset & 7, 0xff); + } + else if (offset == 8) + { + data = m_latch; + } + else + { + data = m_ata->read_cs1(space, offset & 7, 0xff); + } + + return data; +} + +WRITE8_MEMBER( side116_device::write ) +{ + if (offset == 0) + { + UINT16 ide_data = (m_latch << 8) | data; + m_ata->write_cs0(space, 0, ide_data, 0xffff); + } + else if (offset < 8) + { + m_ata->write_cs0(space, offset & 7, data, 0xff); + } + else if (offset == 8) + { + m_latch = data; + } + else + { + m_ata->write_cs1(space, offset & 7, data, 0xff); + } +} + +WRITE_LINE_MEMBER( side116_device::ide_interrupt ) +{ + UINT8 level = m_config->read() & 0x18; + + if (level == 0x08) + m_isa->irq2_w(state); + else if (level == 0x10) + m_isa->irq5_w(state); +} |