diff options
Diffstat (limited to 'src/devices/bus/samcoupe/drive/floppy.cpp')
-rw-r--r-- | src/devices/bus/samcoupe/drive/floppy.cpp | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/src/devices/bus/samcoupe/drive/floppy.cpp b/src/devices/bus/samcoupe/drive/floppy.cpp new file mode 100644 index 00000000000..4d37aeb35f6 --- /dev/null +++ b/src/devices/bus/samcoupe/drive/floppy.cpp @@ -0,0 +1,91 @@ +// license: GPL-2.0+ +// copyright-holders: Dirk Best +/*************************************************************************** + + Internal floppy drive for SAM Coupe + +***************************************************************************/ + +#include "emu.h" +#include "floppy.h" +#include "formats/coupedsk.h" + + +//************************************************************************** +// DEVICE DEFINITIONS +//************************************************************************** + +DEFINE_DEVICE_TYPE(SAM_FLOPPY, sam_floppy_device, "sam_floppy", "SAM Coupe Internal Floppy") + +FLOPPY_FORMATS_MEMBER( sam_floppy_device::floppy_formats ) + FLOPPY_MGT_FORMAT +FLOPPY_FORMATS_END + +static void samcoupe_floppies(device_slot_interface &device) +{ + device.option_add("35dd", FLOPPY_35_DD); +} + +//------------------------------------------------- +// device_add_mconfig - add device configuration +//------------------------------------------------- + +void sam_floppy_device::device_add_mconfig(machine_config &config) +{ + WD1772(config, m_fdc, 24_MHz_XTAL / 3); + FLOPPY_CONNECTOR(config, "fdc:0", samcoupe_floppies, "35dd", sam_floppy_device::floppy_formats); +} + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// sam_floppy_device - constructor +//------------------------------------------------- + +sam_floppy_device::sam_floppy_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : + device_t(mconfig, SAM_FLOPPY, tag, owner, clock), + device_samcoupe_drive_interface(mconfig, *this), + m_fdc(*this, "fdc"), + m_drive(*this, "fdc:0") +{ +} + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void sam_floppy_device::device_start() +{ +} + + +//************************************************************************** +// IMPLEMENTATION +//************************************************************************** + +uint8_t sam_floppy_device::read(offs_t offset) +{ + floppy_image_device *floppy = m_drive->get_device(); + + if (floppy) + floppy->ss_w(BIT(offset, 2)); + + m_fdc->set_floppy(floppy); + + return m_fdc->read(offset & 0x03); +} + +void sam_floppy_device::write(offs_t offset, uint8_t data) +{ + floppy_image_device *floppy = m_drive->get_device(); + + if (floppy) + floppy->ss_w(BIT(offset, 2)); + + m_fdc->set_floppy(floppy); + + m_fdc->write(offset & 0x03, data); +} |