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Diffstat (limited to 'src/devices/bus/centronics/comxpl80.c')
-rw-r--r--src/devices/bus/centronics/comxpl80.c328
1 files changed, 328 insertions, 0 deletions
diff --git a/src/devices/bus/centronics/comxpl80.c b/src/devices/bus/centronics/comxpl80.c
new file mode 100644
index 00000000000..6c3fa83a8d7
--- /dev/null
+++ b/src/devices/bus/centronics/comxpl80.c
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+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
+/**********************************************************************
+
+ COMX PL-80 plotter emulation
+
+**********************************************************************/
+
+/*
+
+ TODO:
+
+ - CPU type?
+
+*/
+
+#include "comxpl80.h"
+
+
+
+//**************************************************************************
+// MACROS / CONSTANTS
+//**************************************************************************
+
+#define CX005_TAG "cx005"
+
+
+
+//**************************************************************************
+// DEVICE DEFINITIONS
+//**************************************************************************
+
+const device_type COMX_PL80 = &device_creator<comx_pl80_device>;
+
+
+//-------------------------------------------------
+// ROM( comxpl80 )
+//-------------------------------------------------
+
+ROM_START( comxpl80 )
+ ROM_REGION( 0x1000, CX005_TAG, 0 )
+ ROM_LOAD( "pl80.pt6", 0x0080, 0x0e00, CRC(ae059e5b) SHA1(f25812606b0082d32eb603d0a702a2187089d332) )
+
+ ROM_REGION( 0x6000, "gfx1", ROMREGION_ERASEFF ) // Plotter fonts
+ ROM_LOAD( "it.em.ou.bin", 0x2000, 0x2000, CRC(1b4a3198) SHA1(138ff6666a31c2d18cd63e609dd94d9cd1529931) )
+ ROM_LOAD( "tiny.bin", 0x4000, 0x0400, CRC(940ec1ed) SHA1(ad83a3b57e2f0fbaa1e40644cd999b3f239635e8) )
+ROM_END
+
+
+//-------------------------------------------------
+// rom_region - device-specific ROM region
+//-------------------------------------------------
+
+const rom_entry *comx_pl80_device::device_rom_region() const
+{
+ return ROM_NAME( comxpl80 );
+}
+
+
+//-------------------------------------------------
+// ADDRESS_MAP( comxpl80_mem )
+//-------------------------------------------------
+
+static ADDRESS_MAP_START( comxpl80_mem, AS_PROGRAM, 8, comx_pl80_device )
+/* AM_RANGE(0x000, 0x000) AM_READWRITE(cx005_port_a_r, cx005_port_a_w)
+ AM_RANGE(0x001, 0x001) AM_READWRITE(cx005_port_b_r, cx005_port_b_w)
+ AM_RANGE(0x002, 0x002) AM_READWRITE(cx005_port_c_r, cx005_port_c_w)
+ AM_RANGE(0x003, 0x003) AM_READ(cx005_port_d_digital_r)
+ AM_RANGE(0x004, 0x004) AM_WRITE(cx005_port_a_ddr_w)
+ AM_RANGE(0x005, 0x005) AM_WRITE(cx005_port_b_ddr_w)
+ AM_RANGE(0x006, 0x006) AM_WRITE(cx005_port_c_ddr_w)
+ AM_RANGE(0x007, 0x007) AM_READ(cx005_port_d_analog_r)
+ AM_RANGE(0x008, 0x008) AM_READWRITE(cx005_timer_data_r, cx005_timer_data_w)
+ AM_RANGE(0x008, 0x008) AM_READWRITE(cx005_timer_ctrl_r, cx005_timer_ctrl_w)*/
+ AM_RANGE(0x00a, 0x01f) AM_NOP // Not Used
+ AM_RANGE(0x020, 0x07f) AM_RAM // Internal RAM
+ AM_RANGE(0x080, 0xf7f) AM_ROM AM_REGION(CX005_TAG, 0) // Internal ROM
+ AM_RANGE(0xf80, 0xff7) AM_ROM AM_REGION(CX005_TAG, 0xf00) // Self-Test
+ AM_RANGE(0xff8, 0xfff) AM_ROM AM_REGION(CX005_TAG, 0xf78) // Interrupt Vectors
+ADDRESS_MAP_END
+
+
+//-------------------------------------------------
+// ADDRESS_MAP( comxpl80_io )
+//-------------------------------------------------
+
+static ADDRESS_MAP_START( comxpl80_io, AS_IO, 8, comx_pl80_device )
+ ADDRESS_MAP_UNMAP_HIGH
+ AM_RANGE(0x00, 0x00) AM_WRITE(pa_w)
+ AM_RANGE(0x01, 0x01) AM_WRITE(pb_w)
+ AM_RANGE(0x02, 0x02) AM_WRITE(pc_w)
+ AM_RANGE(0x03, 0x03) AM_READ(pd_r)
+ADDRESS_MAP_END
+
+
+//-------------------------------------------------
+// MACHINE_DRIVER( comxpl80 )
+//-------------------------------------------------
+
+static MACHINE_CONFIG_FRAGMENT( comxpl80 )
+ MCFG_CPU_ADD(CX005_TAG, M6805, 4000000) // CX005: some kind of MC6805/MC68HC05 clone
+ MCFG_CPU_PROGRAM_MAP(comxpl80_mem)
+ MCFG_CPU_IO_MAP(comxpl80_io)
+ MCFG_DEVICE_DISABLE()
+MACHINE_CONFIG_END
+
+
+//-------------------------------------------------
+// machine_config_additions - device-specific
+// machine configurations
+//-------------------------------------------------
+
+machine_config_constructor comx_pl80_device::device_mconfig_additions() const
+{
+ return MACHINE_CONFIG_NAME( comxpl80 );
+}
+
+
+//-------------------------------------------------
+// INPUT_PORTS( comxpl80 )
+//-------------------------------------------------
+
+INPUT_PORTS_START( comxpl80 )
+ PORT_START("SW")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_SPECIAL ) PORT_NAME("DOWN")
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_SPECIAL ) PORT_NAME("PEN-SEL")
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_SPECIAL ) PORT_NAME("UP")
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_SPECIAL ) PORT_NAME("CR")
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_SPECIAL ) PORT_NAME("ON LINE")
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_SPECIAL ) PORT_NAME("PE")
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_SPECIAL ) PORT_NAME("RIGHT")
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_SPECIAL ) PORT_NAME("LEFT")
+
+ PORT_START("FONT")
+ PORT_CONFNAME( 0x03, 0x00, "COMX PL-80 Font Pack")
+ PORT_CONFSETTING( 0x00, DEF_STR( None ) )
+ PORT_CONFSETTING( 0x01, "Italic, Emphasized and Outline" )
+ PORT_CONFSETTING( 0x02, "Tiny" )
+INPUT_PORTS_END
+
+
+//-------------------------------------------------
+// input_ports - device-specific input ports
+//-------------------------------------------------
+
+ioport_constructor comx_pl80_device::device_input_ports() const
+{
+ return INPUT_PORTS_NAME( comxpl80 );
+}
+
+
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// comx_pl80_device - constructor
+//-------------------------------------------------
+
+comx_pl80_device::comx_pl80_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
+ : device_t(mconfig, COMX_PL80, "COMX PL-80", tag, owner, clock, "comx_pl80", __FILE__),
+ device_centronics_peripheral_interface(mconfig, *this),
+ m_plotter(*this, "PLOTTER"),
+ m_font(*this, "FONT"),
+ m_sw(*this, "SW")
+{
+}
+
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void comx_pl80_device::device_start()
+{
+ // state saving
+ save_item(NAME(m_font_addr));
+ save_item(NAME(m_x_motor_phase));
+ save_item(NAME(m_y_motor_phase));
+ save_item(NAME(m_z_motor_phase));
+ save_item(NAME(m_plotter_data));
+ save_item(NAME(m_plotter_ack));
+ save_item(NAME(m_plotter_online));
+}
+
+
+//-------------------------------------------------
+// device_reset - device-specific reset
+//-------------------------------------------------
+
+void comx_pl80_device::device_reset()
+{
+}
+
+
+//-------------------------------------------------
+// pa_w -
+//-------------------------------------------------
+
+WRITE8_MEMBER( comx_pl80_device::pa_w )
+{
+ /*
+
+ bit description
+
+ 0 Y motor phase A
+ 1 Y motor phase B
+ 2 Y motor phase C
+ 3 Y motor phase D
+ 4 ROM A12
+ 5 ROM CE /PT5 CK
+ 6 PT4 OE
+ 7 SW & PE ENABLE
+
+ */
+
+ m_y_motor_phase = data & 0x0f;
+ m_font_addr = (BIT(data, 4) << 12) | (m_font_addr & 0xfff);
+
+ m_plotter_data = 0xff;
+
+ if (BIT(data, 5))
+ {
+ // write motor phase data
+ }
+ else
+ {
+ // read data from font ROM
+ int font_rom = (m_font->read() & 0x03) * 0x2000;
+
+ m_plotter_data = m_plotter->base()[font_rom | m_font_addr];
+ }
+
+ if (!BIT(data, 6))
+ {
+ // read data from Centronics bus
+ m_plotter_data = m_data;
+ }
+
+ if (BIT(data, 7))
+ {
+ // read switches
+ m_plotter_data = m_sw->read();
+ }
+}
+
+
+//-------------------------------------------------
+// pb_w -
+//-------------------------------------------------
+
+WRITE8_MEMBER( comx_pl80_device::pb_w )
+{
+ /*
+
+ bit description
+
+ 0 Z motor phase A
+ 1 Z motor phase B
+ 2 Z motor phase C
+ 3 Z motor phase D
+ 4 ROM A8
+ 5 ROM A9
+ 6 ROM A10
+ 7 ROM A11
+
+ */
+
+ m_z_motor_phase = data & 0x0f;
+
+ m_font_addr = (m_font_addr & 0x10ff) | (data << 4);
+}
+
+
+//-------------------------------------------------
+// pc_w -
+//-------------------------------------------------
+
+WRITE8_MEMBER( comx_pl80_device::pc_w )
+{
+ /*
+
+ bit description
+
+ 0 ROM A0 /X motor phase A
+ 1 ROM A1 /X motor phase B
+ 2 ROM A2 /X motor phase C
+ 3 ROM A3 /X motor phase D
+ 4 ROM A4 /ACK
+ 5 ROM A5 /On-line LED
+ 6 ROM A6
+ 7 ROM A7
+
+ */
+
+ m_font_addr = (m_font_addr & 0x1f00) | data;
+
+ m_x_motor_phase = data & 0x0f;
+
+ m_plotter_ack = BIT(data, 4);
+ m_plotter_online = BIT(data, 5);
+}
+
+
+//-------------------------------------------------
+// pd_r -
+//-------------------------------------------------
+
+READ8_MEMBER( comx_pl80_device::pd_r )
+{
+ /*
+
+ bit description
+
+ 0 D0 /ROM D0 /DOWN SW
+ 1 D1 /ROM D1 /PEN-SEL SW
+ 2 D2 /ROM D2 /UP SW
+ 3 D3 /ROM D3 /CRSW
+ 4 D4 /ROM D4 /ON LINE SW
+ 5 D5 /ROM D5 /PE Sensor
+ 6 D6 /ROM D6 /RIGHT SW
+ 7 D7 /ROM D7 /LEFT SW
+
+ */
+
+ return m_plotter_data;
+}