mirror of
https://github.com/holub/mame
synced 2025-06-03 11:26:56 +03:00
163 lines
4.8 KiB
C
163 lines
4.8 KiB
C
/*********************************************************************
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a2diskii.c
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Implementation of the Apple II Disk II controller card
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*********************************************************************/
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#include "emu.h"
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#include "includes/apple2.h"
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#include "imagedev/flopdrv.h"
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#include "formats/ap2_dsk.h"
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#include "devices/appldriv.h"
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#include "machine/applefdc.h"
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#include "machine/a2diskii.h"
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/***************************************************************************
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PARAMETERS
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***************************************************************************/
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//**************************************************************************
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// GLOBAL VARIABLES
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//**************************************************************************
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const device_type A2BUS_DISKII = &device_creator<a2bus_diskii_device>;
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const device_type A2BUS_IWM_FDC = &device_creator<a2bus_iwmflop_device>;
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#define DISKII_ROM_REGION "diskii_rom"
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#define FDC_TAG "diskii_fdc"
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const applefdc_interface fdc_interface =
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{
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apple525_set_lines, /* set_lines */
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apple525_set_enable_lines, /* set_enable_lines */
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apple525_read_data, /* read_data */
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apple525_write_data, /* write_data */
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apple525_read_status /* read_status */
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};
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static const floppy_interface floppy_interface =
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{
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DEVCB_NULL,
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DEVCB_NULL,
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DEVCB_NULL,
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DEVCB_NULL,
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DEVCB_NULL,
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FLOPPY_STANDARD_5_25_DSHD,
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LEGACY_FLOPPY_OPTIONS_NAME(apple2),
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"floppy_5_25",
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NULL
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};
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MACHINE_CONFIG_FRAGMENT( diskii )
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MCFG_APPLEFDC_ADD(FDC_TAG, fdc_interface)
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MCFG_LEGACY_FLOPPY_APPLE_2_DRIVES_ADD(floppy_interface,15,16)
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MACHINE_CONFIG_END
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MACHINE_CONFIG_FRAGMENT( iwmflop )
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MCFG_IWM_ADD(FDC_TAG, fdc_interface)
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MCFG_LEGACY_FLOPPY_APPLE_2_DRIVES_ADD(floppy_interface,15,16)
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MACHINE_CONFIG_END
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ROM_START( diskii )
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ROM_REGION(0x100, DISKII_ROM_REGION, 0)
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ROM_LOAD( "341-0027-a.p5", 0x000000, 0x000100, CRC(ce7144f6) SHA1(d4181c9f046aafc3fb326b381baac809d9e38d16) )
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ROM_END
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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 a2bus_floppy_device::device_mconfig_additions() const
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{
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return MACHINE_CONFIG_NAME( diskii );
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}
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machine_config_constructor a2bus_iwmflop_device::device_mconfig_additions() const
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{
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return MACHINE_CONFIG_NAME( iwmflop );
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}
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//-------------------------------------------------
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// rom_region - device-specific ROM region
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//-------------------------------------------------
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const rom_entry *a2bus_floppy_device::device_rom_region() const
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{
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return ROM_NAME( diskii );
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}
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//**************************************************************************
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// LIVE DEVICE
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//**************************************************************************
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a2bus_floppy_device::a2bus_floppy_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock) :
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device_t(mconfig, type, name, tag, owner, clock),
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device_a2bus_card_interface(mconfig, *this),
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m_fdc(*this, FDC_TAG)
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{
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}
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a2bus_diskii_device::a2bus_diskii_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
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a2bus_floppy_device(mconfig, A2BUS_DISKII, "Apple Disk II controller", tag, owner, clock)
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{
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m_shortname = "a2diskii";
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}
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a2bus_iwmflop_device::a2bus_iwmflop_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
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a2bus_floppy_device(mconfig, A2BUS_IWM_FDC, "Apple IWM floppy card", tag, owner, clock)
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{
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m_shortname = "a2diskii";
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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 a2bus_floppy_device::device_start()
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{
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// set_a2bus_device makes m_slot valid
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set_a2bus_device();
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astring tempstring;
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m_rom = device().machine().root_device().memregion(this->subtag(tempstring, DISKII_ROM_REGION))->base();
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}
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void a2bus_floppy_device::device_reset()
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{
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}
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/*-------------------------------------------------
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read_c0nx - called for reads from this card's c0nx space
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-------------------------------------------------*/
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UINT8 a2bus_floppy_device::read_c0nx(address_space &space, UINT8 offset)
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{
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return applefdc_r(m_fdc, offset);
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}
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/*-------------------------------------------------
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write_c0nx - called for writes to this card's c0nx space
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-------------------------------------------------*/
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void a2bus_floppy_device::write_c0nx(address_space &space, UINT8 offset, UINT8 data)
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{
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applefdc_w(m_fdc, offset, data);
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}
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/*-------------------------------------------------
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read_cnxx - called for reads from this card's c0nx space
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-------------------------------------------------*/
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UINT8 a2bus_floppy_device::read_cnxx(address_space &space, UINT8 offset)
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{
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return m_rom[offset];
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}
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