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Diffstat (limited to 'src/devices/bus/x68k/x68k_scsiext.c')
-rw-r--r--src/devices/bus/x68k/x68k_scsiext.c101
1 files changed, 101 insertions, 0 deletions
diff --git a/src/devices/bus/x68k/x68k_scsiext.c b/src/devices/bus/x68k/x68k_scsiext.c
new file mode 100644
index 00000000000..b3490cda74d
--- /dev/null
+++ b/src/devices/bus/x68k/x68k_scsiext.c
@@ -0,0 +1,101 @@
+// license:BSD-3-Clause
+// copyright-holders:Barry Rodewald
+/*
+ * x68k_scsiext.c
+ *
+ * Sharp CZ-6BS1 SCSI-1 controller
+ *
+ * Created on: 5/06/2012
+ */
+
+#include "emu.h"
+#include "bus/scsi/scsi.h"
+#include "bus/scsi/scsihd.h"
+#include "machine/mb89352.h"
+#include "x68k_scsiext.h"
+
+//**************************************************************************
+// DEVICE DEFINITIONS
+//**************************************************************************
+
+const device_type X68K_SCSIEXT = &device_creator<x68k_scsiext_device>;
+
+//-------------------------------------------------
+// rom_region - device-specific ROM region
+//-------------------------------------------------
+
+ROM_START( x68k_cz6bs1 )
+ ROM_REGION( 0x10000, "scsiexrom", 0 )
+ ROM_LOAD16_WORD_SWAP( "scsiexrom.bin", 0x0000, 0x2000, CRC(7be488de) SHA1(49616c09a8986ffe6a12ad600febe512f7ba8ae4) )
+ROM_END
+
+const rom_entry *x68k_scsiext_device::device_rom_region() const
+{
+ return ROM_NAME( x68k_cz6bs1 );
+}
+
+// device machine config
+static MACHINE_CONFIG_FRAGMENT( x68k_scsiext )
+ MCFG_DEVICE_ADD("scsi", SCSI_PORT, 0)
+ MCFG_SCSIDEV_ADD("scsi:" SCSI_PORT_DEVICE1, "harddisk", SCSIHD, SCSI_ID_0)
+ MCFG_SCSIDEV_ADD("scsi:" SCSI_PORT_DEVICE2, "harddisk", SCSIHD, SCSI_ID_1)
+ MCFG_SCSIDEV_ADD("scsi:" SCSI_PORT_DEVICE3, "harddisk", SCSIHD, SCSI_ID_2)
+ MCFG_SCSIDEV_ADD("scsi:" SCSI_PORT_DEVICE4, "harddisk", SCSIHD, SCSI_ID_3)
+ MCFG_SCSIDEV_ADD("scsi:" SCSI_PORT_DEVICE5, "harddisk", SCSIHD, SCSI_ID_4)
+ MCFG_SCSIDEV_ADD("scsi:" SCSI_PORT_DEVICE6, "harddisk", SCSIHD, SCSI_ID_5)
+ MCFG_SCSIDEV_ADD("scsi:" SCSI_PORT_DEVICE7, "harddisk", SCSIHD, SCSI_ID_6)
+
+ MCFG_DEVICE_ADD("mb89352", MB89352A, 0)
+ MCFG_LEGACY_SCSI_PORT("scsi")
+ MCFG_MB89352A_IRQ_CB(WRITELINE(x68k_scsiext_device, irq_w))
+ MCFG_MB89352A_DRQ_CB(WRITELINE(x68k_scsiext_device, drq_w))
+MACHINE_CONFIG_END
+
+machine_config_constructor x68k_scsiext_device::device_mconfig_additions() const
+{
+ return MACHINE_CONFIG_NAME( x68k_scsiext );
+}
+
+x68k_scsiext_device::x68k_scsiext_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
+ : device_t(mconfig, X68K_SCSIEXT, "Sharp CZ-6BS1 SCSI-1", tag, owner, clock, "x68k_cz6bs1", __FILE__),
+ device_x68k_expansion_card_interface(mconfig, *this),
+ m_spc(*this, "mb89352")
+{
+}
+
+void x68k_scsiext_device::device_start()
+{
+ device_t* cpu = machine().device("maincpu");
+ UINT8* ROM;
+ address_space& space = cpu->memory().space(AS_PROGRAM);
+ m_slot = dynamic_cast<x68k_expansion_slot_device *>(owner());
+ space.install_read_bank(0xea0020,0xea1fff,0,0,"scsi_ext");
+ space.unmap_write(0xea0020,0xea1fff,0,0);
+ ROM = machine().root_device().memregion(subtag("scsiexrom").c_str())->base();
+ machine().root_device().membank("scsi_ext")->set_base(ROM);
+ space.install_readwrite_handler(0xea0000,0xea001f,0,0,read8_delegate(FUNC(x68k_scsiext_device::register_r),this),write8_delegate(FUNC(x68k_scsiext_device::register_w),this),0x00ff00ff);
+}
+
+void x68k_scsiext_device::device_reset()
+{
+}
+
+void x68k_scsiext_device::irq_w(int state)
+{
+ m_slot->irq2_w(state); // correct? Or perhaps selectable?
+}
+
+void x68k_scsiext_device::drq_w(int state)
+{
+ // TODO
+}
+
+READ8_MEMBER(x68k_scsiext_device::register_r)
+{
+ return m_spc->mb89352_r(space,offset);
+}
+
+WRITE8_MEMBER(x68k_scsiext_device::register_w)
+{
+ m_spc->mb89352_w(space,offset,data);
+}