mirror of
https://github.com/holub/mame
synced 2025-06-05 12:26:35 +03:00
125 lines
3.6 KiB
C
125 lines
3.6 KiB
C
/***************************************************************************
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ISA 16 bit IDE controller
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***************************************************************************/
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#include "emu.h"
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#include "isa_ide.h"
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#include "machine/idectrl.h"
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#include "imagedev/harddriv.h"
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static READ16_DEVICE_HANDLER( ide16_r )
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{
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return ide_controller16_r(device, 0x1f0/2 + offset, mem_mask);
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}
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static WRITE16_DEVICE_HANDLER( ide16_w )
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{
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ide_controller16_w(device, 0x1f0/2 + offset, data, mem_mask);
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}
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static READ16_DEVICE_HANDLER( ide16_alt_r )
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{
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return ide_controller16_r(device, 0x3f6/2 + offset, 0x00ff);
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}
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static WRITE16_DEVICE_HANDLER( ide16_alt_w )
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{
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ide_controller16_w(device, 0x3f6/2 + offset, data, 0x00ff);
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}
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static void ide_interrupt(device_t *device, int state)
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{
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isa16_ide_device *ide = downcast<isa16_ide_device *>(device->owner());
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if (ide->is_primary()) {
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ide->m_isa->irq14_w(state);
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} else {
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ide->m_isa->irq15_w(state);
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}
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}
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static const ide_config ide_intf =
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{
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ide_interrupt,
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NULL,
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0
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};
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static MACHINE_CONFIG_FRAGMENT( ide )
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MCFG_IDE_CONTROLLER_ADD("ide", ide_intf, ide_image_devices, "hdd", "hdd", false)
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MACHINE_CONFIG_END
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static INPUT_PORTS_START( ide )
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PORT_START("DSW")
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PORT_DIPNAME( 0x01, 0x00, "IDE Configuration")
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PORT_DIPSETTING( 0x00, "Primary" )
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PORT_DIPSETTING( 0x01, "Secondary" )
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INPUT_PORTS_END
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//**************************************************************************
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// GLOBAL VARIABLES
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//**************************************************************************
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const device_type ISA16_IDE = &device_creator<isa16_ide_device>;
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//-------------------------------------------------
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// machine_config_additions - device-specific
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// machine configurations
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//-------------------------------------------------
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machine_config_constructor isa16_ide_device::device_mconfig_additions() const
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{
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return MACHINE_CONFIG_NAME( ide );
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}
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//-------------------------------------------------
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// input_ports - device-specific input ports
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//-------------------------------------------------
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ioport_constructor isa16_ide_device::device_input_ports() const
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{
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return INPUT_PORTS_NAME( ide );
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}
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//**************************************************************************
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// LIVE DEVICE
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//**************************************************************************
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//-------------------------------------------------
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// isa16_ide_device - constructor
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//-------------------------------------------------
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isa16_ide_device::isa16_ide_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
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: device_t(mconfig, ISA16_IDE, "IDE Fixed Drive Adapter", tag, owner, clock),
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device_isa16_card_interface( mconfig, *this ),
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m_is_primary(true)
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{
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}
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//-------------------------------------------------
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// device_start - device-specific startup
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//-------------------------------------------------
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void isa16_ide_device::device_start()
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{
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set_isa_device();
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}
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//-------------------------------------------------
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// device_reset - device-specific reset
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//-------------------------------------------------
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void isa16_ide_device::device_reset()
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{
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m_is_primary = (ioport("DSW")->read() & 1) ? false : true;
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if (m_is_primary) {
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m_isa->install16_device(subdevice("ide"), 0x01f0, 0x01f7, 0, 0, FUNC(ide16_r), FUNC(ide16_w) );
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//m_isa->install16_device(subdevice("ide"), 0x03f6, 0x03f7, 0, 0, FUNC(ide16_alt_r), FUNC(ide16_alt_w) );
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} else {
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m_isa->install16_device(subdevice("ide"), 0x0170, 0x0177, 0, 0, FUNC(ide16_r), FUNC(ide16_w) );
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m_isa->install16_device(subdevice("ide"), 0x0376, 0x0377, 0, 0, FUNC(ide16_alt_r), FUNC(ide16_alt_w) );
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}
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}
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