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author Curt Coder <curtcoder@mail.com>2014-03-17 22:06:26 +0000
committer Curt Coder <curtcoder@mail.com>2014-03-17 22:06:26 +0000
commit4bba3f6e421184a50d035b33c04e7fef98160809 (patch)
treeec1ca778b330d7ce4c5a2c310e0eae8502e9e9d5 /src/emu/bus/bml3/bml3mp1802.c
parentf3fe1ab6443027aef68590c7391b43dea0580c06 (diff)
(MESS) Moved the remaining slot interfaces to emu/bus. (nw)
Diffstat (limited to 'src/emu/bus/bml3/bml3mp1802.c')
-rw-r--r--src/emu/bus/bml3/bml3mp1802.c155
1 files changed, 155 insertions, 0 deletions
diff --git a/src/emu/bus/bml3/bml3mp1802.c b/src/emu/bus/bml3/bml3mp1802.c
new file mode 100644
index 00000000000..3d20f77f122
--- /dev/null
+++ b/src/emu/bus/bml3/bml3mp1802.c
@@ -0,0 +1,155 @@
+/*********************************************************************
+
+ bml3mp1802.c
+
+ Hitachi MP-1802 floppy disk controller card for the MB-6890
+ Hitachi MP-3550 floppy drive is attached
+
+*********************************************************************/
+
+#include "emu.h"
+#include "bml3mp1802.h"
+
+
+/***************************************************************************
+ PARAMETERS
+***************************************************************************/
+
+//**************************************************************************
+// GLOBAL VARIABLES
+//**************************************************************************
+
+const device_type BML3BUS_MP1802 = &device_creator<bml3bus_mp1802_device>;
+
+static const floppy_interface bml3_mp1802_floppy_interface =
+{
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_NULL,
+ FLOPPY_STANDARD_5_25_DSDD,
+ LEGACY_FLOPPY_OPTIONS_NAME(default),
+ NULL
+};
+
+WRITE_LINE_MEMBER( bml3bus_mp1802_device::bml3_wd17xx_intrq_w )
+{
+ if (state) {
+ m_bml3bus->set_nmi_line(PULSE_LINE);
+ }
+}
+
+const wd17xx_interface bml3_wd17xx_interface =
+{
+ DEVCB_NULL,
+ DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, bml3bus_mp1802_device, bml3_wd17xx_intrq_w),
+ DEVCB_NULL,
+ {FLOPPY_0, FLOPPY_1}
+};
+
+
+#define MP1802_ROM_REGION "mp1802_rom"
+
+ROM_START( mp1802 )
+ ROM_REGION(0x10000, MP1802_ROM_REGION, 0)
+ // MP-1802 disk controller ROM, which replaces part of the system ROM
+ ROM_LOAD( "mp1802.rom", 0xf800, 0x800, BAD_DUMP CRC(8d0dc101) SHA1(92f7d1cebecafa7472e45c4999520de5c01c6dbc))
+ROM_END
+
+MACHINE_CONFIG_FRAGMENT( mp1802 )
+ MCFG_MB8866_ADD("wd17xx", bml3_wd17xx_interface )
+ MCFG_LEGACY_FLOPPY_2_DRIVES_ADD(bml3_mp1802_floppy_interface)
+MACHINE_CONFIG_END
+
+/***************************************************************************
+ FUNCTION PROTOTYPES
+***************************************************************************/
+
+//-------------------------------------------------
+// machine_config_additions - device-specific
+// machine configurations
+//-------------------------------------------------
+
+machine_config_constructor bml3bus_mp1802_device::device_mconfig_additions() const
+{
+ return MACHINE_CONFIG_NAME( mp1802 );
+}
+
+//-------------------------------------------------
+// rom_region - device-specific ROM region
+//-------------------------------------------------
+
+const rom_entry *bml3bus_mp1802_device::device_rom_region() const
+{
+ return ROM_NAME( mp1802 );
+}
+
+READ8_MEMBER( bml3bus_mp1802_device::bml3_mp1802_r)
+{
+ return wd17xx_drq_r(m_wd17xx) ? 0x00 : 0x80;
+}
+
+WRITE8_MEMBER( bml3bus_mp1802_device::bml3_mp1802_w)
+{
+ int drive = data & 0x03;
+ int side = BIT(data, 4);
+ int motor = BIT(data, 3);
+ const char *floppy_name = NULL;
+ switch (drive) {
+ case 0:
+ floppy_name = FLOPPY_0;
+ break;
+ case 1:
+ floppy_name = FLOPPY_1;
+ break;
+ case 2:
+ floppy_name = FLOPPY_2;
+ break;
+ case 3:
+ floppy_name = FLOPPY_3;
+ break;
+ }
+ device_t *floppy = subdevice(floppy_name);
+ wd17xx_set_drive(m_wd17xx,drive);
+ floppy_mon_w(floppy, !motor);
+ floppy_drive_set_ready_state(floppy, ASSERT_LINE, 0);
+ wd17xx_set_side(m_wd17xx,side);
+}
+
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+bml3bus_mp1802_device::bml3bus_mp1802_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
+ device_t(mconfig, BML3BUS_MP1802, "Hitachi MP-1802 Floppy Controller Card", tag, owner, clock, "bml3mp1802", __FILE__),
+ device_bml3bus_card_interface(mconfig, *this),
+ m_wd17xx(*this, "wd17xx")
+{
+}
+
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void bml3bus_mp1802_device::device_start()
+{
+ // set_bml3bus_device makes m_slot valid
+ set_bml3bus_device();
+
+ m_rom = memregion(MP1802_ROM_REGION)->base();
+
+ // install into memory
+ address_space &space_prg = machine().firstcpu->space(AS_PROGRAM);
+ space_prg.install_legacy_readwrite_handler(m_wd17xx, 0xff00, 0xff03, FUNC(wd17xx_r), FUNC(wd17xx_w));
+ space_prg.install_readwrite_handler(0xff04, 0xff04, read8_delegate( FUNC(bml3bus_mp1802_device::bml3_mp1802_r), this), write8_delegate(FUNC(bml3bus_mp1802_device::bml3_mp1802_w), this) );
+ // overwriting the main ROM (rather than using e.g. install_rom) should mean that bank switches for RAM expansion still work...
+ UINT8 *mainrom = device().machine().root_device().memregion("maincpu")->base();
+ memcpy(mainrom + 0xf800, m_rom + 0xf800, 0x800);
+}
+
+void bml3bus_mp1802_device::device_reset()
+{
+}