mirror of
https://github.com/holub/mame
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(MESS) abc80: Emulated the Scandia Metric ABC FD2 floppy controller. [Curt Coder]
This commit is contained in:
Curt Coder
parent
cb74c696a0
commit
5732623008
@ -79,6 +79,7 @@ project "formats"
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MAME_DIR .. "src/lib/formats/a26_cas.c",
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MAME_DIR .. "src/lib/formats/a5105_dsk.c",
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MAME_DIR .. "src/lib/formats/abc800_dsk.c",
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MAME_DIR .. "src/lib/formats/abcfd2_dsk.c",
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MAME_DIR .. "src/lib/formats/ace_tap.c",
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MAME_DIR .. "src/lib/formats/adam_cas.c",
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MAME_DIR .. "src/lib/formats/adam_dsk.c",
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@ -2,7 +2,7 @@
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// copyright-holders:Curt Coder
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/**********************************************************************
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Scandia Metric FD2 floppy controller emulation
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Scandia Metric ABC FD2 floppy controller emulation
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Copyright MESS Team.
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Visit http://mamedev.org for licensing and usage restrictions.
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@ -57,7 +57,7 @@ Notes:
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// DEVICE DEFINITIONS
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//**************************************************************************
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const device_type ABC_FD2 = &device_creator<abc_fd2_device>;
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const device_type ABC_FD2 = &device_creator<abc_fd2_t>;
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//-------------------------------------------------
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@ -65,11 +65,12 @@ const device_type ABC_FD2 = &device_creator<abc_fd2_device>;
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//-------------------------------------------------
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ROM_START( abc_fd2 )
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ROM_REGION( 0x1000, "dos", 0 )
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ROM_LOAD( "ami 8005saj.1a", 0x000, 0x800, CRC(d865213f) SHA1(ae7399ede74520ccb2dd5be2e6bb13c33ee81bd0) ) // what's this?
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ROM_LOAD( "abcdos.3d", 0x0000, 0x1000, CRC(2cb2192f) SHA1(a6b3a9587714f8db807c05bee6c71c0684363744) )
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ROM_REGION( 0x400, Z80_TAG, 0 )
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ROM_LOAD( "1.02.3f", 0x000, 0x400, CRC(a19fbdc2) SHA1(d500377c34ac6c679c155f4a5208e1c3e00cd920) )
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ROM_REGION( 0x800, "abc80", 0 )
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ROM_LOAD( "ami 8005saj.1a", 0x000, 0x800, CRC(d865213f) SHA1(ae7399ede74520ccb2dd5be2e6bb13c33ee81bd0) )
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ROM_END
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@ -77,17 +78,45 @@ ROM_END
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// rom_region - device-specific ROM region
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//-------------------------------------------------
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const rom_entry *abc_fd2_device::device_rom_region() const
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const rom_entry *abc_fd2_t::device_rom_region() const
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{
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return ROM_NAME( abc_fd2 );
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}
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//-------------------------------------------------
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// status_w -
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//-------------------------------------------------
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WRITE8_MEMBER( abc_fd2_t::status_w )
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{
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/*
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bit description
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0 _INT to main Z80
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1
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2
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3
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4
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5
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6
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7
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*/
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m_status = data & 0xfe;
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// interrupt
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m_slot->irq_w(BIT(data, 0) ? ASSERT_LINE : CLEAR_LINE);
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}
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//-------------------------------------------------
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// ADDRESS_MAP( abc_fd2_mem )
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//-------------------------------------------------
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static ADDRESS_MAP_START( abc_fd2_mem, AS_PROGRAM, 8, abc_fd2_device )
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static ADDRESS_MAP_START( abc_fd2_mem, AS_PROGRAM, 8, abc_fd2_t )
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AM_RANGE(0x0000, 0x03ff) AM_ROM AM_REGION(Z80_TAG, 0)
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AM_RANGE(0x0800, 0x0bff) AM_RAM
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ADDRESS_MAP_END
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@ -97,13 +126,88 @@ ADDRESS_MAP_END
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// ADDRESS_MAP( abc_fd2_io )
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//-------------------------------------------------
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static ADDRESS_MAP_START( abc_fd2_io, AS_IO, 8, abc_fd2_device )
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ADDRESS_MAP_GLOBAL_MASK(0xff)
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AM_RANGE(0xb0, 0xb3) AM_DEVREADWRITE(Z80PIO_TAG, z80pio_device, read_alt, write_alt)
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AM_RANGE(0xd0, 0xd3) AM_DEVREADWRITE(FD1771_TAG, fd1771_t, read, write)
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static ADDRESS_MAP_START( abc_fd2_io, AS_IO, 8, abc_fd2_t )
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ADDRESS_MAP_GLOBAL_MASK(0x73)
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AM_RANGE(0x30, 0x33) AM_DEVREADWRITE(Z80PIO_TAG, z80pio_device, read_alt, write_alt)
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AM_RANGE(0x50, 0x53) AM_DEVREADWRITE(FD1771_TAG, fd1771_t, read, write)
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AM_RANGE(0x60, 0x60) AM_WRITE(status_w)
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ADDRESS_MAP_END
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//-------------------------------------------------
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// Z80PIO
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//-------------------------------------------------
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READ8_MEMBER( abc_fd2_t::pio_pa_r )
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{
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return m_data;
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}
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WRITE8_MEMBER( abc_fd2_t::pio_pa_w )
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{
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m_data = data;
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}
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READ8_MEMBER( abc_fd2_t::pio_pb_r )
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{
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/*
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bit description
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0
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1
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2
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3
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4
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5 DRQ
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6 HLD
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7 INTRQ
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*/
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UINT8 data = 0;
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data |= m_fdc->drq_r() << 5;
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data |= m_fdc->hld_r() << 6;
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data |= m_fdc->intrq_r() << 7;
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return data;
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}
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WRITE8_MEMBER( abc_fd2_t::pio_pb_w )
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{
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/*
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bit description
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0 SEL1
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1 SEL2
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2 TG43
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3 MON
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4 HLT
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5
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6
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7
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*/
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floppy_image_device *floppy = NULL;
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if (BIT(data, 0)) floppy = m_floppy0->get_device();
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if (BIT(data, 1)) floppy = m_floppy1->get_device();
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m_fdc->set_floppy(floppy);
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if (floppy)
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{
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// motor enable
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floppy->mon_w(BIT(data, 3));
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}
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m_fdc->hlt_w(BIT(data, 4));
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}
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//-------------------------------------------------
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// z80_daisy_config daisy_chain
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//-------------------------------------------------
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@ -123,23 +227,35 @@ static SLOT_INTERFACE_START( abc_fd2_floppies )
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SLOT_INTERFACE( "525sssd", FLOPPY_525_SSSD )
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SLOT_INTERFACE_END
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FLOPPY_FORMATS_MEMBER( abc_fd2_t::floppy_formats )
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FLOPPY_ABC_FD2_FORMAT
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FLOPPY_FORMATS_END
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//-------------------------------------------------
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// MACHINE_DRIVER( abc_fd2 )
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//-------------------------------------------------
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static MACHINE_CONFIG_FRAGMENT( abc_fd2 )
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MCFG_CPU_ADD(Z80_TAG, Z80, XTAL_4MHz)
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MCFG_CPU_ADD(Z80_TAG, Z80, XTAL_4MHz/2)
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MCFG_CPU_PROGRAM_MAP(abc_fd2_mem)
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MCFG_CPU_IO_MAP(abc_fd2_io)
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MCFG_CPU_CONFIG(daisy_chain)
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MCFG_DEVICE_ADD(Z80PIO_TAG, Z80PIO, XTAL_4MHz)
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MCFG_DEVICE_ADD(Z80PIO_TAG, Z80PIO, XTAL_4MHz/2)
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MCFG_Z80PIO_OUT_INT_CB(INPUTLINE(Z80_TAG, INPUT_LINE_IRQ0))
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MCFG_Z80PIO_IN_PA_CB(READ8(abc_fd2_t, pio_pa_r))
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MCFG_Z80PIO_OUT_PA_CB(WRITE8(abc_fd2_t, pio_pa_w))
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MCFG_Z80PIO_IN_PB_CB(READ8(abc_fd2_t, pio_pb_r))
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MCFG_Z80PIO_OUT_PB_CB(WRITE8(abc_fd2_t, pio_pb_w))
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MCFG_FD1771x_ADD(FD1771_TAG, XTAL_4MHz/2)
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MCFG_FD1771x_ADD(FD1771_TAG, XTAL_4MHz/4)
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MCFG_WD_FDC_INTRQ_CALLBACK(DEVWRITELINE(Z80PIO_TAG, z80pio_device, pb7_w))
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MCFG_WD_FDC_DRQ_CALLBACK(DEVWRITELINE(Z80PIO_TAG, z80pio_device, pb5_w))
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MCFG_WD_FDC_HLD_CALLBACK(DEVWRITELINE(Z80PIO_TAG, z80pio_device, pb6_w))
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MCFG_FLOPPY_DRIVE_ADD(FD1771_TAG":0", abc_fd2_floppies, "525sssd", floppy_image_device::default_floppy_formats)
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MCFG_FLOPPY_DRIVE_ADD(FD1771_TAG":1", abc_fd2_floppies, "525sssd", floppy_image_device::default_floppy_formats)
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MCFG_FLOPPY_DRIVE_ADD(FD1771_TAG ":0", abc_fd2_floppies, "525sssd", abc_fd2_t::floppy_formats)
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MCFG_FLOPPY_DRIVE_ADD(FD1771_TAG ":1", abc_fd2_floppies, "525sssd", abc_fd2_t::floppy_formats)
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MACHINE_CONFIG_END
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@ -148,7 +264,7 @@ MACHINE_CONFIG_END
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// machine configurations
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//-------------------------------------------------
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machine_config_constructor abc_fd2_device::device_mconfig_additions() const
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machine_config_constructor abc_fd2_t::device_mconfig_additions() const
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{
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return MACHINE_CONFIG_NAME( abc_fd2 );
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}
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@ -160,18 +276,19 @@ machine_config_constructor abc_fd2_device::device_mconfig_additions() const
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//**************************************************************************
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//-------------------------------------------------
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// abc_fd2_device - constructor
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// abc_fd2_t - constructor
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//-------------------------------------------------
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abc_fd2_device::abc_fd2_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
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: device_t(mconfig, ABC_FD2, "ABC FD2", tag, owner, clock, "abc_fd2", __FILE__),
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device_abcbus_card_interface(mconfig, *this),
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m_maincpu(*this, Z80_TAG),
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m_pio(*this, Z80PIO_TAG),
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m_fdc(*this, FD1771_TAG),
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m_floppy0(*this, FD1771_TAG":0"),
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m_floppy1(*this, FD1771_TAG":1"),
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m_rom(*this, "abc80")
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abc_fd2_t::abc_fd2_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
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device_t(mconfig, ABC_FD2, "ABC FD2", tag, owner, clock, "abc_fd2", __FILE__),
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device_abcbus_card_interface(mconfig, *this),
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m_maincpu(*this, Z80_TAG),
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m_pio(*this, Z80PIO_TAG),
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m_fdc(*this, FD1771_TAG),
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m_floppy0(*this, FD1771_TAG ":0"),
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m_floppy1(*this, FD1771_TAG ":1"),
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m_dos_rom(*this, "dos"),
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m_cs(false)
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{
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}
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@ -180,7 +297,7 @@ abc_fd2_device::abc_fd2_device(const machine_config &mconfig, const char *tag, d
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// device_start - device-specific startup
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//-------------------------------------------------
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void abc_fd2_device::device_start()
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void abc_fd2_t::device_start()
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{
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}
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@ -189,8 +306,15 @@ void abc_fd2_device::device_start()
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// device_reset - device-specific reset
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//-------------------------------------------------
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void abc_fd2_device::device_reset()
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void abc_fd2_t::device_reset()
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{
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m_cs = false;
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m_status = 0;
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m_slot->irq_w(CLEAR_LINE);
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m_maincpu->reset();
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m_fdc->soft_reset();
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}
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@ -203,8 +327,94 @@ void abc_fd2_device::device_reset()
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// abcbus_cs -
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//-------------------------------------------------
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void abc_fd2_device::abcbus_cs(UINT8 data)
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void abc_fd2_t::abcbus_cs(UINT8 data)
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{
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m_cs = (data == 0x2d);
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}
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//-------------------------------------------------
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// abcbus_stat -
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//-------------------------------------------------
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UINT8 abc_fd2_t::abcbus_stat()
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{
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UINT8 data = 0xff;
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if (m_cs)
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{
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data = (m_status & 0xfe) | m_pio->rdy_a();
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}
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return data;
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}
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//-------------------------------------------------
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// abcbus_inp -
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//-------------------------------------------------
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UINT8 abc_fd2_t::abcbus_inp()
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{
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UINT8 data = 0xff;
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if (m_cs)
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{
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if (!BIT(m_status, 6))
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{
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data = m_data;
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}
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m_pio->strobe_a(0);
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m_pio->strobe_a(1);
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}
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return data;
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}
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//-------------------------------------------------
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// abcbus_out -
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//-------------------------------------------------
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void abc_fd2_t::abcbus_out(UINT8 data)
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{
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if (!m_cs) return;
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if (BIT(m_status, 6))
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{
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m_data = data;
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}
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m_pio->strobe_a(0);
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m_pio->strobe_a(1);
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}
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//-------------------------------------------------
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// abcbus_c1 -
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//-------------------------------------------------
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void abc_fd2_t::abcbus_c1(UINT8 data)
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{
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if (m_cs)
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{
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m_maincpu->set_input_line(INPUT_LINE_NMI, ASSERT_LINE);
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m_maincpu->set_input_line(INPUT_LINE_NMI, CLEAR_LINE);
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}
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}
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//-------------------------------------------------
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// abcbus_c3 -
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//-------------------------------------------------
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void abc_fd2_t::abcbus_c3(UINT8 data)
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{
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if (m_cs)
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{
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device_reset();
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}
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}
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@ -212,13 +422,13 @@ void abc_fd2_device::abcbus_cs(UINT8 data)
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// abcbus_xmemfl -
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//-------------------------------------------------
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UINT8 abc_fd2_device::abcbus_xmemfl(offs_t offset)
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UINT8 abc_fd2_t::abcbus_xmemfl(offs_t offset)
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{
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UINT8 data = 0xff;
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if (offset >= 0x6000 && offset < 0x6400) // TODO is this mirrored?
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if ((offset & 0xf000) == 0x6000)
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{
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data = m_rom->base()[offset & 0x3ff];
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data = m_dos_rom->base()[offset & 0xfff];
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}
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return data;
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@ -2,7 +2,7 @@
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// copyright-holders:Curt Coder
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/**********************************************************************
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Scandia Metric FD2 floppy controller emulation
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Scandia Metric ABC FD2 floppy controller emulation
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Copyright MESS Team.
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Visit http://mamedev.org for licensing and usage restrictions.
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@ -18,6 +18,7 @@
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#include "abcbus.h"
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#include "cpu/z80/z80.h"
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#include "cpu/z80/z80daisy.h"
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#include "formats/abcfd2_dsk.h"
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#include "machine/wd_fdc.h"
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#include "machine/z80pio.h"
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@ -27,19 +28,28 @@
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// TYPE DEFINITIONS
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//**************************************************************************
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// ======================> abc_fd2_device
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// ======================> abc_fd2_t
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class abc_fd2_device : public device_t,
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public device_abcbus_card_interface
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class abc_fd2_t : public device_t,
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public device_abcbus_card_interface
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{
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public:
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// construction/destruction
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abc_fd2_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
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abc_fd2_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
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// optional information overrides
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virtual const rom_entry *device_rom_region() const;
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virtual machine_config_constructor device_mconfig_additions() const;
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DECLARE_WRITE8_MEMBER( status_w );
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DECLARE_READ8_MEMBER( pio_pa_r );
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DECLARE_WRITE8_MEMBER( pio_pa_w );
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DECLARE_READ8_MEMBER( pio_pb_r );
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DECLARE_WRITE8_MEMBER( pio_pb_w );
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DECLARE_FLOPPY_FORMATS( floppy_formats );
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protected:
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// device-level overrides
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virtual void device_start();
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@ -47,6 +57,11 @@ protected:
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// device_abcbus_interface overrides
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virtual void abcbus_cs(UINT8 data);
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virtual UINT8 abcbus_inp();
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virtual void abcbus_out(UINT8 data);
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virtual UINT8 abcbus_stat();
|
||||
virtual void abcbus_c1(UINT8 data);
|
||||
virtual void abcbus_c3(UINT8 data);
|
||||
virtual UINT8 abcbus_xmemfl(offs_t offset);
|
||||
|
||||
private:
|
||||
@ -55,7 +70,11 @@ private:
|
||||
required_device<fd1771_t> m_fdc;
|
||||
required_device<floppy_connector> m_floppy0;
|
||||
required_device<floppy_connector> m_floppy1;
|
||||
required_memory_region m_rom;
|
||||
required_memory_region m_dos_rom;
|
||||
|
||||
bool m_cs;
|
||||
UINT8 m_status;
|
||||
UINT8 m_data;
|
||||
};
|
||||
|
||||
|
||||
|
||||
62
src/lib/formats/abcfd2_dsk.c
Normal file
62
src/lib/formats/abcfd2_dsk.c
Normal file
@ -0,0 +1,62 @@
|
||||
// license:BSD-3-Clause
|
||||
// copyright-holders:Curt Coder
|
||||
/*********************************************************************
|
||||
|
||||
formats/abcfd2_dsk.c
|
||||
|
||||
Scandia Metric ABC FD2 disk image formats
|
||||
|
||||
*********************************************************************/
|
||||
|
||||
#include <assert.h>
|
||||
|
||||
#include "formats/abcfd2_dsk.h"
|
||||
|
||||
abc_fd2_format::abc_fd2_format() : wd177x_format(formats)
|
||||
{
|
||||
}
|
||||
|
||||
const char *abc_fd2_format::name() const
|
||||
{
|
||||
return "abc_fd2";
|
||||
}
|
||||
|
||||
const char *abc_fd2_format::description() const
|
||||
{
|
||||
return "Scandia Metric ABC FD2 disk image";
|
||||
}
|
||||
|
||||
const char *abc_fd2_format::extensions() const
|
||||
{
|
||||
return "dsk";
|
||||
}
|
||||
|
||||
const abc_fd2_format::format abc_fd2_format::formats[] = {
|
||||
// track description
|
||||
// 28xff 6x00 fe 2x00 01 00 f7 11xff 6x00 fb 128xe5 f7
|
||||
// 27xff 6x00 fe 2x00 02 00 f7 11xff 6x00 fb 128xe5 f7
|
||||
// 27xff 6x00 fe 2x00 03 00 f7 11xff 6x00 fb 128xe5 f7
|
||||
// 27xff 6x00 fe 2x00 04 00 f7 11xff 6x00 fb 128xe5 f7
|
||||
// 27xff 6x00 fe 2x00 05 00 f7 11xff 6x00 fb 128xe5 f7
|
||||
// 27xff 6x00 fe 2x00 06 00 f7 11xff 6x00 fb 128xe5 f7
|
||||
// 27xff 6x00 fe 2x00 07 00 f7 11xff 6x00 fb 128xe5 f7
|
||||
// 27xff 6x00 fe 2x00 08 00 f7 11xff 6x00 fb 128xe5 f7
|
||||
// 27xff 6x00 fe 2x00 09 00 f7 11xff 6x00 fb 128xe5 f7
|
||||
// 27xff 6x00 fe 2x00 0a 00 f7 11xff 6x00 fb 128xe5 f7
|
||||
// 27xff 6x00 fe 2x00 0b 00 f7 11xff 6x00 fb 128xe5 f7
|
||||
// 27xff 6x00 fe 2x00 0c 00 f7 11xff 6x00 fb 128xe5 f7
|
||||
// 27xff 6x00 fe 2x00 0d 00 f7 11xff 6x00 fb 128xe5 f7
|
||||
// 27xff 6x00 fe 2x00 0e 00 f7 11xff 6x00 fb 128xe5 f7
|
||||
// 27xff 6x00 fe 2x00 0f 00 f7 11xff 6x00 fb 128xe5 f7
|
||||
// 27xff 6x00 fe 2x00 10 00 f7 11xff 6x00 fb 128xe5 f7
|
||||
// 117xff
|
||||
|
||||
{ // 80K 5 1/4 inch single density single sided
|
||||
floppy_image::FF_525, floppy_image::SSSD, floppy_image::FM,
|
||||
4000, 16, 40, 1, 128, {}, 1, {}, 28, 11, 27
|
||||
},
|
||||
|
||||
{}
|
||||
};
|
||||
|
||||
const floppy_format_type FLOPPY_ABC_FD2_FORMAT = &floppy_image_format_creator<abc_fd2_format>;
|
||||
30
src/lib/formats/abcfd2_dsk.h
Normal file
30
src/lib/formats/abcfd2_dsk.h
Normal file
@ -0,0 +1,30 @@
|
||||
// license:BSD-3-Clause
|
||||
// copyright-holders:Curt Coder
|
||||
/*********************************************************************
|
||||
|
||||
formats/abcfd2_dsk.h
|
||||
|
||||
Scandia Metric ABC FD2 disk image formats
|
||||
|
||||
*********************************************************************/
|
||||
|
||||
#ifndef ABC_FD2_DSK_H_
|
||||
#define ABC_FD2_DSK_H_
|
||||
|
||||
#include "wd177x_dsk.h"
|
||||
|
||||
class abc_fd2_format : public wd177x_format {
|
||||
public:
|
||||
abc_fd2_format();
|
||||
|
||||
virtual const char *name() const;
|
||||
virtual const char *description() const;
|
||||
virtual const char *extensions() const;
|
||||
|
||||
private:
|
||||
static const format formats[];
|
||||
};
|
||||
|
||||
extern const floppy_format_type FLOPPY_ABC_FD2_FORMAT;
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user