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-rw-r--r--src/mess/machine/a2diskii.c162
1 files changed, 162 insertions, 0 deletions
diff --git a/src/mess/machine/a2diskii.c b/src/mess/machine/a2diskii.c
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index 00000000000..a9ed3e0259a
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+++ b/src/mess/machine/a2diskii.c
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+/*********************************************************************
+
+ a2diskii.c
+
+ Implementation of the Apple II Disk II controller card
+
+*********************************************************************/
+
+#include "emu.h"
+#include "includes/apple2.h"
+#include "imagedev/flopdrv.h"
+#include "formats/ap2_dsk.h"
+#include "devices/appldriv.h"
+#include "machine/applefdc.h"
+#include "machine/a2diskii.h"
+
+
+/***************************************************************************
+ PARAMETERS
+***************************************************************************/
+
+//**************************************************************************
+// GLOBAL VARIABLES
+//**************************************************************************
+
+const device_type A2BUS_DISKII = &device_creator<a2bus_diskii_device>;
+const device_type A2BUS_IWM_FDC = &device_creator<a2bus_iwmflop_device>;
+
+#define DISKII_ROM_REGION "diskii_rom"
+#define FDC_TAG "diskii_fdc"
+
+const applefdc_interface fdc_interface =
+{
+ apple525_set_lines, /* set_lines */
+ apple525_set_enable_lines, /* set_enable_lines */
+
+ apple525_read_data, /* read_data */
+ apple525_write_data, /* write_data */
+ apple525_read_status /* read_status */
+};
+
+static const floppy_interface floppy_interface =
+{
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_NULL,
+ FLOPPY_STANDARD_5_25_DSHD,
+ LEGACY_FLOPPY_OPTIONS_NAME(apple2),
+ "floppy_5_25",
+ NULL
+};
+
+MACHINE_CONFIG_FRAGMENT( diskii )
+ MCFG_APPLEFDC_ADD(FDC_TAG, fdc_interface)
+ MCFG_LEGACY_FLOPPY_APPLE_2_DRIVES_ADD(floppy_interface,15,16)
+MACHINE_CONFIG_END
+
+MACHINE_CONFIG_FRAGMENT( iwmflop )
+ MCFG_IWM_ADD(FDC_TAG, fdc_interface)
+ MCFG_LEGACY_FLOPPY_APPLE_2_DRIVES_ADD(floppy_interface,15,16)
+MACHINE_CONFIG_END
+
+ROM_START( diskii )
+ ROM_REGION(0x100, DISKII_ROM_REGION, 0)
+ ROM_LOAD( "341-0027-a.p5", 0x000000, 0x000100, CRC(ce7144f6) SHA1(d4181c9f046aafc3fb326b381baac809d9e38d16) )
+ROM_END
+
+//-------------------------------------------------
+// machine_config_additions - device-specific
+// machine configurations
+//-------------------------------------------------
+
+machine_config_constructor a2bus_floppy_device::device_mconfig_additions() const
+{
+ return MACHINE_CONFIG_NAME( diskii );
+}
+
+machine_config_constructor a2bus_iwmflop_device::device_mconfig_additions() const
+{
+ return MACHINE_CONFIG_NAME( iwmflop );
+}
+
+//-------------------------------------------------
+// rom_region - device-specific ROM region
+//-------------------------------------------------
+
+const rom_entry *a2bus_floppy_device::device_rom_region() const
+{
+ return ROM_NAME( diskii );
+}
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+a2bus_floppy_device::a2bus_floppy_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock) :
+ device_t(mconfig, type, name, tag, owner, clock),
+ device_a2bus_card_interface(mconfig, *this),
+ m_fdc(*this, FDC_TAG)
+{
+}
+
+a2bus_diskii_device::a2bus_diskii_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
+ a2bus_floppy_device(mconfig, A2BUS_DISKII, "Apple Disk II controller", tag, owner, clock)
+{
+ m_shortname = "a2diskii";
+}
+
+a2bus_iwmflop_device::a2bus_iwmflop_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
+ a2bus_floppy_device(mconfig, A2BUS_IWM_FDC, "Apple IWM floppy card", tag, owner, clock)
+{
+ m_shortname = "a2diskii";
+}
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void a2bus_floppy_device::device_start()
+{
+ // set_a2bus_device makes m_slot valid
+ set_a2bus_device();
+
+ astring tempstring;
+ m_rom = device().machine().root_device().memregion(this->subtag(tempstring, DISKII_ROM_REGION))->base();
+}
+
+void a2bus_floppy_device::device_reset()
+{
+}
+
+
+/*-------------------------------------------------
+ read_c0nx - called for reads from this card's c0nx space
+-------------------------------------------------*/
+
+UINT8 a2bus_floppy_device::read_c0nx(address_space &space, UINT8 offset)
+{
+ return applefdc_r(m_fdc, offset);
+}
+
+
+/*-------------------------------------------------
+ write_c0nx - called for writes to this card's c0nx space
+-------------------------------------------------*/
+
+void a2bus_floppy_device::write_c0nx(address_space &space, UINT8 offset, UINT8 data)
+{
+ applefdc_w(m_fdc, offset, data);
+}
+
+/*-------------------------------------------------
+ read_cnxx - called for reads from this card's c0nx space
+-------------------------------------------------*/
+
+UINT8 a2bus_floppy_device::read_cnxx(address_space &space, UINT8 offset)
+{
+ return m_rom[offset];
+}
+