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diff --git a/src/mame/drivers/amico2k.cpp b/src/mame/drivers/amico2k.cpp
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+// license:BSD-3-Clause
+// copyright-holders:Fabio Priuli, Curt Coder
+/***************************************************************************
+
+ A.S.EL. Amico 2000
+
+ 07/2009 Skeleton driver.
+
+ IC9 - Monitor PROM, handwritten from book listing by Davide
+ IC10 - Recorder PROM, yet to be found
+ IC6/IC7 - PROMs reconstructed by Luigi Serrantoni
+
+ To Do:
+ * Basically everything, in particular implement PROM (described in details
+ at the link below) and i8255
+
+ http://www.computerhistory.it/index.php?option=com_content&task=view&id=85&Itemid=117
+
+ Pasting:
+ 0-F : as is
+ ^ (inc) : ^
+ AD : -
+ DA : =
+ GO : X
+
+ Test Paste:
+ =11^22^33^44^55^66^77^88^99^-0000
+ Now press up-arrow to confirm the data has been entered.
+
+****************************************************************************/
+
+
+#include "emu.h"
+#include "cpu/m6502/m6502.h"
+#include "machine/i8255.h"
+#include "amico2k.lh"
+
+
+class amico2k_state : public driver_device
+{
+public:
+ amico2k_state(const machine_config &mconfig, device_type type, const char *tag)
+ : driver_device(mconfig, type, tag) ,
+ m_maincpu(*this, "maincpu") { }
+
+ void machine_start();
+
+ DECLARE_READ8_MEMBER( ppi_pa_r );
+ DECLARE_WRITE8_MEMBER( ppi_pa_w );
+ DECLARE_READ8_MEMBER( ppi_pb_r );
+ DECLARE_WRITE8_MEMBER( ppi_pb_w );
+
+ int m_ls145_p;
+ UINT8 m_segment;
+
+ // timers
+ emu_timer *m_led_refresh_timer;
+ TIMER_CALLBACK_MEMBER(led_refresh);
+ required_device<cpu_device> m_maincpu;
+};
+
+
+static ADDRESS_MAP_START( amico2k_mem, AS_PROGRAM, 8, amico2k_state )
+ ADDRESS_MAP_UNMAP_HIGH
+ AM_RANGE(0x0000, 0x03ff) AM_RAM
+// AM_RANGE(0x0400, 0x07ff) AM_RAM // optional expansion RAM
+ AM_RANGE(0xfb00, 0xfcff) AM_ROM
+ AM_RANGE(0xfd00, 0xfd03) AM_DEVREADWRITE("i8255", i8255_device, read, write)
+ AM_RANGE(0xfe00, 0xffff) AM_ROM
+ADDRESS_MAP_END
+
+/* Input ports */
+static INPUT_PORTS_START( amico2k )
+ PORT_START("Q0")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2')
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1')
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0')
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("Q1")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('D')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('C')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('B')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('A')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9')
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8')
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7')
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("Q2")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("PC") PORT_CODE(KEYCODE_P)
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("RUN") PORT_CODE(KEYCODE_X) PORT_CHAR('X')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(UTF8_UP) PORT_CODE(KEYCODE_UP) PORT_CHAR('^')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("DA") PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("AD") PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-')
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('F')
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_CHAR('E')
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )
+INPUT_PORTS_END
+
+TIMER_CALLBACK_MEMBER(amico2k_state::led_refresh)
+{
+ if (m_ls145_p > 3)
+ {
+ output_set_digit_value(m_ls145_p - 4, m_segment);
+ }
+}
+
+READ8_MEMBER( amico2k_state::ppi_pa_r )
+{
+ /*
+
+ bit description
+
+ PA0 keyboard data 0
+ PA1 keyboard data 1
+ PA2 keyboard data 2
+ PA3 keyboard data 3
+ PA4 keyboard data 4
+ PA5 keyboard data 5
+ PA6 keyboard data 6
+ PA7 reg out
+
+ */
+
+ switch (m_ls145_p)
+ {
+ case 0: return ioport("Q0")->read();
+ case 1: return ioport("Q1")->read();
+ case 2: return ioport("Q2")->read();
+ default: return 0xff;
+ }
+}
+
+WRITE8_MEMBER( amico2k_state::ppi_pa_w )
+{
+ /*
+
+ bit description
+
+ PA0 LED segment A
+ PA1 LED segment B
+ PA2 LED segment C
+ PA3 LED segment D
+ PA4 LED segment E
+ PA5 LED segment F
+ PA6 LED segment G
+ PA7
+
+ */
+
+ m_segment = data;
+ m_led_refresh_timer->adjust(attotime::from_usec(70));
+}
+
+READ8_MEMBER( amico2k_state::ppi_pb_r )
+{
+ /*
+
+ bit description
+
+ PB0 reg out
+ PB1
+ PB2
+ PB3
+ PB4
+ PB5
+ PB6
+ PB7
+
+ */
+
+ return 0;
+}
+
+WRITE8_MEMBER( amico2k_state::ppi_pb_w )
+{
+ /*
+
+ bit description
+
+ PB0
+ PB1 LS145 P0
+ PB2 LS145 P1
+ PB3 LS145 P2
+ PB4 LS145 P3
+ PB5 reg in
+ PB6 reg in
+ PB7 led output enable
+
+ */
+
+ m_ls145_p = (data >> 1) & 0x0f;
+}
+
+void amico2k_state::machine_start()
+{
+ m_led_refresh_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(amico2k_state::led_refresh),this));
+
+ // state saving
+ save_item(NAME(m_ls145_p));
+ save_item(NAME(m_segment));
+}
+
+static MACHINE_CONFIG_START( amico2k, amico2k_state )
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu", M6502, 1000000) /* 1MHz */
+ MCFG_CPU_PROGRAM_MAP(amico2k_mem)
+
+ /* video hardware */
+ MCFG_DEFAULT_LAYOUT( layout_amico2k )
+
+ MCFG_DEVICE_ADD("i8255", I8255, 0)
+ MCFG_I8255_IN_PORTA_CB(READ8(amico2k_state, ppi_pa_r))
+ MCFG_I8255_OUT_PORTA_CB(WRITE8(amico2k_state, ppi_pa_w))
+ MCFG_I8255_IN_PORTB_CB(READ8(amico2k_state, ppi_pb_r))
+ MCFG_I8255_OUT_PORTB_CB(WRITE8(amico2k_state, ppi_pb_w))
+MACHINE_CONFIG_END
+
+
+/* ROM definition */
+// not sure the ROMs are loaded correctly
+ROM_START( amico2k )
+ ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
+ ROM_LOAD( "prom.ic10", 0xfb00, 0x200, NO_DUMP ) // cassette recorder ROM, not published anywhere. a board is needed!
+ ROM_LOAD( "prom.ic9", 0xfe00, 0x200, CRC(86449f7c) SHA1(fe7deca86e90ab89aae23f11e9dbaf343b4242dc) )
+
+ ROM_REGION( 0x200, "proms", ROMREGION_ERASEFF )
+ ROM_LOAD( "prom.ic6", 0x000, 0x100, CRC(4005f760) SHA1(7edcd85feb5a576f6da1bbb723b3cf668cf3df45) )
+ ROM_LOAD( "prom.ic7", 0x100, 0x100, CRC(8785d864) SHA1(d169c3b5f5690664083030948db9f33571b08656) )
+ROM_END
+
+
+/* Driver */
+
+/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
+COMP( 1978, amico2k, 0, 0, amico2k, amico2k, driver_device, 0, "A.S.E.L.", "Amico 2000", MACHINE_NO_SOUND_HW)