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-rw-r--r--src/devices/bus/s100/nsmdsa.c120
1 files changed, 120 insertions, 0 deletions
diff --git a/src/devices/bus/s100/nsmdsa.c b/src/devices/bus/s100/nsmdsa.c
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+++ b/src/devices/bus/s100/nsmdsa.c
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+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
+/**********************************************************************
+
+ North Star MICRO-DISK System MDS-A (Single Density) emulation
+
+**********************************************************************/
+
+#include "nsmdsa.h"
+
+
+
+//**************************************************************************
+// DEVICE DEFINITIONS
+//**************************************************************************
+
+const device_type S100_MDS_A = &device_creator<s100_mds_a_device>;
+
+
+//-------------------------------------------------
+// ROM( mds_a )
+//-------------------------------------------------
+
+ROM_START( mds_a )
+ ROM_REGION( 0x100, "psel", 0 )
+ ROM_LOAD( "psel.7g", 0x000, 0x100, NO_DUMP ) // 74S287
+
+ ROM_REGION( 0x100, "pgm", 0 )
+ ROM_LOAD( "pgml.3f", 0x000, 0x100, NO_DUMP ) // 74S287
+ ROM_LOAD( "pgmr.3e", 0x000, 0x100, NO_DUMP ) // 74S287
+ ROM_LOAD( "horizon.bin", 0x000, 0x100, CRC(754e53e5) SHA1(875e42942d639b972252b87d86c3dc2133304967) BAD_DUMP )
+ROM_END
+
+
+//-------------------------------------------------
+// rom_region - device-specific ROM region
+//-------------------------------------------------
+
+const rom_entry *s100_mds_a_device::device_rom_region() const
+{
+ return ROM_NAME( mds_a );
+}
+
+
+//-------------------------------------------------
+// SLOT_INTERFACE( mds_a_floppies )
+//-------------------------------------------------
+
+static SLOT_INTERFACE_START( mds_a_floppies )
+ SLOT_INTERFACE( "525sd", FLOPPY_525_SD ) // Shugart SA-400
+SLOT_INTERFACE_END
+
+
+//-------------------------------------------------
+// MACHINE_CONFIG_FRAGMENT( mds_a )
+//-------------------------------------------------
+
+static MACHINE_CONFIG_FRAGMENT( mds_a )
+ MCFG_FLOPPY_DRIVE_ADD("floppy0", mds_a_floppies, "525sd", floppy_image_device::default_floppy_formats)
+ MCFG_FLOPPY_DRIVE_ADD("floppy1", mds_a_floppies, "525sd", floppy_image_device::default_floppy_formats)
+MACHINE_CONFIG_END
+
+
+//-------------------------------------------------
+// machine_config_additions - device-specific
+// machine configurations
+//-------------------------------------------------
+
+machine_config_constructor s100_mds_a_device::device_mconfig_additions() const
+{
+ return MACHINE_CONFIG_NAME( mds_a );
+}
+
+
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// s100_mds_a_device - constructor
+//-------------------------------------------------
+
+s100_mds_a_device::s100_mds_a_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
+ device_t(mconfig, S100_MDS_A, "MDS-A", tag, owner, clock, "nsmdsa", __FILE__),
+ device_s100_card_interface(mconfig, *this),
+ m_floppy0(*this, "floppy0"),
+ m_floppy1(*this, "floppy1"),
+ m_psel_rom(*this, "psel"),
+ m_pgm_rom(*this, "pgm")
+{
+}
+
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void s100_mds_a_device::device_start()
+{
+}
+
+
+//-------------------------------------------------
+// device_reset - device-specific reset
+//-------------------------------------------------
+
+void s100_mds_a_device::device_reset()
+{
+}
+
+
+//-------------------------------------------------
+// s100_smemr_r - memory read
+//-------------------------------------------------
+
+UINT8 s100_mds_a_device::s100_smemr_r(address_space &space, offs_t offset)
+{
+ return 0;
+}