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Diffstat (limited to 'src/devices/bus/cpc/symbfac2.c')
-rw-r--r--src/devices/bus/cpc/symbfac2.c295
1 files changed, 295 insertions, 0 deletions
diff --git a/src/devices/bus/cpc/symbfac2.c b/src/devices/bus/cpc/symbfac2.c
new file mode 100644
index 00000000000..7fd8e756d5c
--- /dev/null
+++ b/src/devices/bus/cpc/symbfac2.c
@@ -0,0 +1,295 @@
+// license:BSD-3-Clause
+// copyright-holders:Barry Rodewald
+/*
+ * symbfac2.c
+ * SYMBiFACE II expansion device
+ * - IDE
+ * - RTC (Dallas DS1287A)
+ * - PS/2 compatible mouse connector
+ * - 512kB RAM expansion
+ * - 512kB rewritable ROM
+ *
+ * Created on: 2/08/2014
+ *
+ * TODO:
+ * - expansion RAM (for now handled by -ramsize)
+ * - rewritable ROM
+ * - mouse controls still need some work
+ */
+
+#include "symbfac2.h"
+
+
+const device_type CPC_SYMBIFACE2 = &device_creator<cpc_symbiface2_device>;
+
+//**************************************************************************
+// DEVICE CONFIG INTERFACE
+//**************************************************************************
+
+// device machine config
+static MACHINE_CONFIG_FRAGMENT( cpc_symbiface2 )
+ MCFG_ATA_INTERFACE_ADD("ide",ata_devices,"hdd",NULL,false)
+ MCFG_DS12885_ADD("rtc")
+ MCFG_NVRAM_ADD_1FILL("nvram")
+ // no pass-through
+MACHINE_CONFIG_END
+
+static INPUT_PORTS_START(cpc_symbiface2)
+ PORT_START("sf2_mouse_x")
+ PORT_BIT(0x3f , 0x00, IPT_MOUSE_X) PORT_SENSITIVITY(50) PORT_KEYDELTA(0) PORT_REVERSE PORT_PLAYER(1) PORT_CODE(MOUSECODE_X) PORT_CHANGED_MEMBER(DEVICE_SELF,cpc_symbiface2_device,mouse_change_x,NULL)
+
+ PORT_START("sf2_mouse_y")
+ PORT_BIT(0x3f , 0x00, IPT_MOUSE_Y) PORT_SENSITIVITY(50) PORT_KEYDELTA(0) PORT_PLAYER(1) PORT_CODE(MOUSECODE_Y) PORT_CHANGED_MEMBER(DEVICE_SELF,cpc_symbiface2_device,mouse_change_x,NULL)
+
+ PORT_START("sf2_mouse_buttons")
+ PORT_BIT(0x00000001, IP_ACTIVE_HIGH, IPT_OTHER) PORT_NAME("PS/2 Mouse left button") PORT_CODE(MOUSECODE_BUTTON1) PORT_CHANGED_MEMBER(DEVICE_SELF,cpc_symbiface2_device,mouse_change_x,NULL)
+ PORT_BIT(0x00000002, IP_ACTIVE_HIGH, IPT_OTHER) PORT_NAME("PS/2 Mouse right button") PORT_CODE(MOUSECODE_BUTTON3) PORT_CHANGED_MEMBER(DEVICE_SELF,cpc_symbiface2_device,mouse_change_x,NULL)
+ PORT_BIT(0x00000004, IP_ACTIVE_HIGH, IPT_OTHER) PORT_NAME("PS/2 Mouse middle button") PORT_CODE(MOUSECODE_BUTTON2) PORT_CHANGED_MEMBER(DEVICE_SELF,cpc_symbiface2_device,mouse_change_x,NULL)
+ PORT_BIT(0x00000008, IP_ACTIVE_HIGH, IPT_OTHER) PORT_NAME("PS/2 Mouse back button") PORT_CODE(MOUSECODE_BUTTON4) PORT_CHANGED_MEMBER(DEVICE_SELF,cpc_symbiface2_device,mouse_change_x,NULL)
+ PORT_BIT(0x00000010, IP_ACTIVE_HIGH, IPT_OTHER) PORT_NAME("PS/2 Mouse forward button") PORT_CODE(MOUSECODE_BUTTON5) PORT_CHANGED_MEMBER(DEVICE_SELF,cpc_symbiface2_device,mouse_change_x,NULL)
+
+ // TODO: mouse scroll wheel support
+// PORT_START("sf2_mouse_scroll")
+// PORT_BIT(0x1f , 0, IPT_TRACKBALL_Y)
+// PORT_SENSITIVITY(100)
+// PORT_KEYDELTA(10)
+// PORT_PLAYER(1)
+INPUT_PORTS_END
+
+
+machine_config_constructor cpc_symbiface2_device::device_mconfig_additions() const
+{
+ return MACHINE_CONFIG_NAME( cpc_symbiface2 );
+}
+
+ioport_constructor cpc_symbiface2_device::device_input_ports() const
+{
+ return INPUT_PORTS_NAME( cpc_symbiface2 );
+}
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+cpc_symbiface2_device::cpc_symbiface2_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
+ device_t(mconfig, CPC_SYMBIFACE2, "SYMBiFACE II", tag, owner, clock, "cpc_symf2", __FILE__),
+ device_cpc_expansion_card_interface(mconfig, *this),
+ m_ide(*this,"ide"),
+ m_rtc(*this,"rtc"),
+ m_nvram(*this,"nvram"),
+ m_mouse_x(*this,"sf2_mouse_x"),
+ m_mouse_y(*this,"sf2_mouse_y"),
+ m_mouse_buttons(*this,"sf2_mouse_buttons")
+{
+}
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void cpc_symbiface2_device::device_start()
+{
+ device_t* cpu = machine().device("maincpu");
+ address_space& space = cpu->memory().space(AS_IO);
+
+ m_slot = dynamic_cast<cpc_expansion_slot_device *>(owner());
+
+ space.install_readwrite_handler(0xfd00,0xfd07,0,0,read8_delegate(FUNC(cpc_symbiface2_device::ide_cs1_r),this),write8_delegate(FUNC(cpc_symbiface2_device::ide_cs1_w),this));
+ space.install_readwrite_handler(0xfd08,0xfd0f,0,0,read8_delegate(FUNC(cpc_symbiface2_device::ide_cs0_r),this),write8_delegate(FUNC(cpc_symbiface2_device::ide_cs0_w),this));
+ space.install_read_handler(0xfd10,0xfd10,0,0,read8_delegate(FUNC(cpc_symbiface2_device::mouse_r),this));
+ space.install_readwrite_handler(0xfd14,0xfd15,0,0,read8_delegate(FUNC(cpc_symbiface2_device::rtc_r),this),write8_delegate(FUNC(cpc_symbiface2_device::rtc_w),this));
+ space.install_readwrite_handler(0xfd17,0xfd17,0,0,read8_delegate(FUNC(cpc_symbiface2_device::rom_rewrite_r),this),write8_delegate(FUNC(cpc_symbiface2_device::rom_rewrite_w),this));
+
+ // set up ROM space (these can be writable, when mapped to &4000, or completely disabled, allowing the built-in ROMs to be visible)
+ // 32 banks of 16kB (512kB)
+ m_rom_space.resize(32*16384);
+
+ m_nvram->set_base(&m_rom_space[0],m_rom_space.size());
+ save_item(NAME(m_rom_space));
+
+}
+
+//-------------------------------------------------
+// device_reset - device-specific reset
+//-------------------------------------------------
+
+void cpc_symbiface2_device::device_reset()
+{
+ m_iohigh = false;
+ m_mouse_state = PS2_MOUSE_IDLE;
+ m_input_x = m_mouse_x->read() & 0x3f;
+ m_input_y = m_mouse_y->read() & 0x3f;
+}
+
+// IDE controller (custom)
+// #FD00-07 - CS1
+// #FD08-0F - CS0
+READ8_MEMBER(cpc_symbiface2_device::ide_cs0_r)
+{
+ // data is returned in words, so it must be buffered
+ if(offset == 0x00) // data register
+ {
+ if(m_iohigh)
+ {
+ m_iohigh = false;
+ return m_ide_data >> 8;
+ }
+ else
+ {
+ m_iohigh = true;
+ m_ide_data = m_ide->read_cs0(space,offset);
+ return m_ide_data & 0xff;
+ }
+ }
+ else
+ return m_ide->read_cs0(space,offset);
+}
+
+WRITE8_MEMBER(cpc_symbiface2_device::ide_cs0_w)
+{
+ m_ide->write_cs0(space,offset,data);
+}
+
+READ8_MEMBER(cpc_symbiface2_device::ide_cs1_r)
+{
+ return m_ide->read_cs1(space,offset);
+}
+
+WRITE8_MEMBER(cpc_symbiface2_device::ide_cs1_w)
+{
+ m_ide->write_cs1(space,offset,data);
+}
+
+// RTC (Dallas DS1287A)
+// #FD15 (write only) register select
+// #FD14 (read/write) read from or write into selected register
+READ8_MEMBER(cpc_symbiface2_device::rtc_r)
+{
+ switch(offset & 0x01)
+ {
+ case 0x00:
+ return m_rtc->read(space,1);
+ case 0x01:
+ return m_rtc->read(space,0);
+ }
+ return 0;
+}
+
+WRITE8_MEMBER(cpc_symbiface2_device::rtc_w)
+{
+ switch(offset & 0x01)
+ {
+ case 0x00:
+ m_rtc->write(space,1,data);
+ break;
+ case 0x01:
+ m_rtc->write(space,0,data);
+ break;
+ }
+}
+
+// PS/2 Mouse connector
+// #FD10 (read only) read mouse status
+/*
+ Status byte
+ Bit 76543210
+ Use mmDDDDDD
+
+ m: Mode
+ D: Use-Data
+
+ If read and...
+
+ m = 00 -> no more data available, you can stop reading the status for a while
+ m = 01 -> D = X offset (signed); you will receive positive values, if the user
+ is moving the mouse to the right
+ m = 10 -> D = Y offset (signed); you will receive positive values, if the user
+ is moving the mouse upwards
+ m = 11 -> D[bit5] = 0 -> D[bit0] = left button
+ D[bit1] = right button
+ D[bit2] = middle button
+ D[bit3] = forward button
+ D[bit4] = backward button
+ D[bit5] = 1 -> D[bit0-4] = scroll wheel offset (signed)
+ */
+READ8_MEMBER(cpc_symbiface2_device::mouse_r)
+{
+ UINT8 ret = 0;
+ int input;
+ int input_diff;
+
+ switch(m_mouse_state)
+ {
+ case PS2_MOUSE_IDLE:
+ m_mouse_state = PS2_MOUSE_IDLE;
+ ret = 0;
+ break;
+ case PS2_MOUSE_X:
+ input = m_mouse_x->read() & 0x3f;
+ input_diff = m_input_x - input;
+ ret = 0x40 | (input_diff & 0x3f);
+ m_input_x = input;
+ m_mouse_state = PS2_MOUSE_Y;
+ break;
+ case PS2_MOUSE_Y:
+ input = m_mouse_y->read() & 0x3f;
+ input_diff = m_input_y - input;
+ ret = 0x80 | (input_diff & 0x3f);
+ m_input_y = input;
+ m_mouse_state = PS2_MOUSE_BUTTONS;
+ break;
+ case PS2_MOUSE_BUTTONS:
+ ret = 0xc0 | (m_mouse_buttons->read() & 0x1f);
+ m_mouse_state = PS2_MOUSE_IDLE;
+ break;
+ case PS2_MOUSE_SCROLL:
+ m_mouse_state = PS2_MOUSE_IDLE;
+ break; // TODO
+ }
+ //popmessage("Mouse: X: %02x Y: %02x\n",m_input_x,m_input_y);
+ return ret;
+}
+
+INPUT_CHANGED_MEMBER(cpc_symbiface2_device::mouse_change_x)
+{
+ m_mouse_state = PS2_MOUSE_X;
+}
+
+INPUT_CHANGED_MEMBER(cpc_symbiface2_device::mouse_change_y)
+{
+ m_mouse_state = PS2_MOUSE_Y;
+}
+
+INPUT_CHANGED_MEMBER(cpc_symbiface2_device::mouse_change_buttons)
+{
+ m_mouse_state = PS2_MOUSE_BUTTONS;
+}
+
+// #FD17 (read) - map currently selected ROM to 0x4000 for read/write
+READ8_MEMBER(cpc_symbiface2_device::rom_rewrite_r)
+{
+ UINT8 bank = get_rom_bank();
+
+ if(bank >= 32)
+ return 0xff;
+
+ m_4xxx_ptr_r = (UINT8*)machine().root_device().membank("bank3")->base();
+ m_4xxx_ptr_w = (UINT8*)machine().root_device().membank("bank11")->base();
+ m_6xxx_ptr_r = (UINT8*)machine().root_device().membank("bank4")->base();
+ m_6xxx_ptr_w = (UINT8*)machine().root_device().membank("bank12")->base();
+ machine().root_device().membank("bank3")->set_base(&m_rom_space[bank*16384]);
+ machine().root_device().membank("bank4")->set_base(&m_rom_space[bank*16384+8192]);
+ machine().root_device().membank("bank11")->set_base(&m_rom_space[bank*16384]);
+ machine().root_device().membank("bank12")->set_base(&m_rom_space[bank*16384+8192]);
+
+ return 0xff;
+}
+
+// #FD17 (write) - unmap selected ROM at 0x4000
+WRITE8_MEMBER(cpc_symbiface2_device::rom_rewrite_w)
+{
+ machine().root_device().membank("bank3")->set_base(m_4xxx_ptr_r);
+ machine().root_device().membank("bank4")->set_base(m_6xxx_ptr_r);
+ machine().root_device().membank("bank11")->set_base(m_4xxx_ptr_w);
+ machine().root_device().membank("bank12")->set_base(m_4xxx_ptr_w);
+}