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diff --git a/src/mame/drivers/sdk86.c b/src/mame/drivers/sdk86.c
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+// license:BSD-3-Clause
+// copyright-holders:Miodrag Milanovic, Jonathan Gevaryahu, Robbbert
+/***************************************************************************
+
+ Intel SDK-86
+
+ 12/05/2009 Skeleton driver by Micko
+ 29/11/2009 Some fleshing out by Lord Nightmare
+ 22/06/2011 Working [Robbbert]
+
+ TODO:
+ Add optional 2x 8255A port read/write logging
+
+
+
+This is an evaluation kit for the 8086 cpu.
+
+There is no speaker or storage facility in the standard kit.
+
+Download the User Manual to get the operating procedures.
+The user manual is available from: http://www.bitsavers.org/pdf/intel/8086/9800698A_SDK-86_Users_Man_Apr79.pdf
+
+ToDo:
+- Artwork
+- Add INTR and RESET keys
+
+****************************************************************************/
+
+#include "bus/rs232/rs232.h"
+#include "cpu/i86/i86.h"
+#include "machine/clock.h"
+#include "machine/i8251.h"
+#include "machine/i8279.h"
+#include "sdk86.lh"
+
+#define I8251_TAG "i8251"
+#define RS232_TAG "rs232"
+
+
+class sdk86_state : public driver_device
+{
+public:
+ sdk86_state(const machine_config &mconfig, device_type type, const char *tag) :
+ driver_device(mconfig, type, tag) ,
+ m_maincpu(*this, "maincpu"),
+ m_usart(*this, I8251_TAG)
+ {
+ }
+
+ required_device<cpu_device> m_maincpu;
+ required_device<i8251_device> m_usart;
+
+ DECLARE_WRITE8_MEMBER(scanlines_w);
+ DECLARE_WRITE8_MEMBER(digit_w);
+ DECLARE_READ8_MEMBER(kbd_r);
+
+ DECLARE_WRITE_LINE_MEMBER( write_usart_clock );
+
+ UINT8 m_digit;
+};
+
+static ADDRESS_MAP_START(sdk86_mem, AS_PROGRAM, 16, sdk86_state)
+ AM_RANGE(0x00000, 0x00fff) AM_RAM //2K standard, or 4k (board fully populated)
+ AM_RANGE(0xfe000, 0xfffff) AM_ROM
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START(sdk86_io, AS_IO, 16, sdk86_state)
+ ADDRESS_MAP_UNMAP_HIGH
+ AM_RANGE(0xfff0, 0xfff1) AM_MIRROR(4) AM_DEVREADWRITE8(I8251_TAG, i8251_device, data_r, data_w, 0xff)
+ AM_RANGE(0xfff2, 0xfff3) AM_MIRROR(4) AM_DEVREADWRITE8(I8251_TAG, i8251_device, status_r, control_w, 0xff)
+ AM_RANGE(0xffe8, 0xffe9) AM_MIRROR(4) AM_DEVREADWRITE8("i8279", i8279_device, data_r, data_w, 0xff)
+ AM_RANGE(0xffea, 0xffeb) AM_MIRROR(4) AM_DEVREADWRITE8("i8279", i8279_device, status_r, cmd_w, 0xff)
+ // FFF8-FFFF = 2 x 8255A i/o chips. chip 1 uses the odd addresses, chip 2 uses the even addresses.
+ // ports are A,B,C,control in that order.
+ADDRESS_MAP_END
+
+/* Input ports */
+static INPUT_PORTS_START( sdk86 )
+ PORT_START("X0")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("0 EB/AX") PORT_CODE(KEYCODE_0) PORT_CHAR('0')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("1 ER/BX") PORT_CODE(KEYCODE_1) PORT_CHAR('1')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("2 GO/CX") PORT_CODE(KEYCODE_2) PORT_CHAR('2')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("3 ST/DX") PORT_CODE(KEYCODE_3) PORT_CHAR('3')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("4 IB/SP") PORT_CODE(KEYCODE_4) PORT_CHAR('4')
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("5 OB/BP") PORT_CODE(KEYCODE_5) PORT_CHAR('5')
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("6 MV/SI") PORT_CODE(KEYCODE_6) PORT_CHAR('6')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("7 EW/DI") PORT_CODE(KEYCODE_7) PORT_CHAR('7')
+
+ PORT_START("X1")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8 IW/CS") PORT_CODE(KEYCODE_8) PORT_CHAR('8')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("9 OW/DS") PORT_CODE(KEYCODE_9) PORT_CHAR('9')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("A SS") PORT_CODE(KEYCODE_A) PORT_CHAR('A')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("B ES") PORT_CODE(KEYCODE_B) PORT_CHAR('B')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("C IP") PORT_CODE(KEYCODE_C) PORT_CHAR('C')
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("D FL") PORT_CODE(KEYCODE_D) PORT_CHAR('D')
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("E") PORT_CODE(KEYCODE_E) PORT_CHAR('E')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F") PORT_CODE(KEYCODE_F) PORT_CHAR('F')
+
+ PORT_START("X2")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(".") PORT_CODE(KEYCODE_STOP) PORT_CODE(KEYCODE_X)
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(",") PORT_CODE(KEYCODE_COMMA) PORT_CODE(KEYCODE_UP)
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("-") PORT_CODE(KEYCODE_MINUS)
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("+") PORT_CODE(KEYCODE_EQUALS)
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(":") PORT_CODE(KEYCODE_COLON)
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("REG") PORT_CODE(KEYCODE_R)
+ PORT_BIT(0xC0, IP_ACTIVE_LOW, IPT_UNUSED)
+INPUT_PORTS_END
+
+
+WRITE8_MEMBER( sdk86_state::scanlines_w )
+{
+ m_digit = data;
+}
+
+WRITE8_MEMBER( sdk86_state::digit_w )
+{
+ if (m_digit < 8)
+ output_set_digit_value(m_digit, data);
+}
+
+READ8_MEMBER( sdk86_state::kbd_r )
+{
+ UINT8 data = 0xff;
+
+ if (m_digit < 3)
+ {
+ char kbdrow[6];
+ sprintf(kbdrow,"X%X",m_digit);
+ data = ioport(kbdrow)->read();
+ }
+ return data;
+}
+
+WRITE_LINE_MEMBER( sdk86_state::write_usart_clock )
+{
+ m_usart->write_txc(state);
+ m_usart->write_rxc(state);
+}
+
+static DEVICE_INPUT_DEFAULTS_START( terminal )
+ DEVICE_INPUT_DEFAULTS( "RS232_TXBAUD", 0xff, RS232_BAUD_4800 )
+ DEVICE_INPUT_DEFAULTS( "RS232_RXBAUD", 0xff, RS232_BAUD_4800 )
+ DEVICE_INPUT_DEFAULTS( "RS232_STARTBITS", 0xff, RS232_STARTBITS_1 )
+ DEVICE_INPUT_DEFAULTS( "RS232_DATABITS", 0xff, RS232_DATABITS_8 )
+ DEVICE_INPUT_DEFAULTS( "RS232_PARITY", 0xff, RS232_PARITY_NONE )
+ DEVICE_INPUT_DEFAULTS( "RS232_STOPBITS", 0xff, RS232_STOPBITS_2 )
+DEVICE_INPUT_DEFAULTS_END
+
+static MACHINE_CONFIG_START( sdk86, sdk86_state )
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu", I8086, XTAL_14_7456MHz/3) /* divided down by i8284 clock generator; jumper selection allows it to be slowed to 2.5MHz, hence changing divider from 3 to 6 */
+ MCFG_CPU_PROGRAM_MAP(sdk86_mem)
+ MCFG_CPU_IO_MAP(sdk86_io)
+
+ /* video hardware */
+ MCFG_DEFAULT_LAYOUT(layout_sdk86)
+
+ /* Devices */
+ MCFG_DEVICE_ADD(I8251_TAG, I8251, 0)
+ MCFG_I8251_TXD_HANDLER(DEVWRITELINE(RS232_TAG, rs232_port_device, write_txd))
+ MCFG_I8251_DTR_HANDLER(DEVWRITELINE(RS232_TAG, rs232_port_device, write_dtr))
+ MCFG_I8251_RTS_HANDLER(DEVWRITELINE(I8251_TAG, i8251_device, write_cts))
+
+ MCFG_RS232_PORT_ADD(RS232_TAG, default_rs232_devices, "terminal")
+ MCFG_RS232_RXD_HANDLER(DEVWRITELINE(I8251_TAG, i8251_device, write_rxd))
+ MCFG_RS232_DSR_HANDLER(DEVWRITELINE(I8251_TAG, i8251_device, write_dsr))
+ MCFG_DEVICE_CARD_DEVICE_INPUT_DEFAULTS("terminal", terminal)
+
+ MCFG_DEVICE_ADD("usart_clock", CLOCK, 307200)
+ MCFG_CLOCK_SIGNAL_HANDLER(WRITELINE(sdk86_state, write_usart_clock))
+
+ MCFG_DEVICE_ADD("i8279", I8279, 2500000) // based on divider
+ MCFG_I8279_OUT_SL_CB(WRITE8(sdk86_state, scanlines_w)) // scan SL lines
+ MCFG_I8279_OUT_DISP_CB(WRITE8(sdk86_state, digit_w)) // display A&B
+ MCFG_I8279_IN_RL_CB(READ8(sdk86_state, kbd_r)) // kbd RL lines
+ MCFG_I8279_IN_SHIFT_CB(GND) // Shift key
+ MCFG_I8279_IN_CTRL_CB(GND)
+
+MACHINE_CONFIG_END
+
+/* ROM definition */
+ROM_START( sdk86 )
+ ROM_REGION( 0x100000, "maincpu", ROMREGION_ERASEFF ) // all are Intel D2616 ?eproms with the windows painted over? (factory programmed eproms? this would match the 'i8642' marking on the factory programmed eprom version of the AT keyboard mcu...)
+ // Note that the rom pairs at FE000-FEFFF and FF000-FFFFF are interchangeable; the ones at FF000-FFFFF are the ones which start on bootup, and the other ones live at FE000-FEFFF and can be switched in by the user. One pair is the Serial RS232 Monitor and the other is the Keypad/front panel monitor. On the SDK-86 I (LN) dumped, the Keypad monitor was primary, but the other SDK-86 I know of has the roms in the opposite arrangement (Serial primary).
+ // Keypad Monitor Version 1.1 (says "- 86 1.1" on LED display at startup)
+ ROM_SYSTEM_BIOS( 0, "keypad", "Keypad Monitor" )
+ ROMX_LOAD( "0169_102042-001.a27", 0xff000, 0x0800, CRC(3f46311a) SHA1(a97e6861b736f26230b9adbf5cd2576a9f60d626), ROM_SKIP(1) | ROM_BIOS(1) ) /* Label: "iD2616 // T142094WS // (C)INTEL '77 // 0169 // 102042-001" */
+ ROMX_LOAD( "0170_102043-001.a30", 0xff001, 0x0800, CRC(65924471) SHA1(5d258695bf585f89179dfa0a113a0eeeabd5ee2b), ROM_SKIP(1) | ROM_BIOS(1) ) /* Label: "iD2616 // T145056WS // (C)INTEL '77 // 0170 // 102043-001" */
+ // Serial Monitor Version 1.2 (says " 86 1.2" on LED display at startup, and sends a data prompt over serial)
+ ROM_SYSTEM_BIOS( 1, "serial", "Serial Monitor" )
+ ROMX_LOAD( "0456_104531-001.a36", 0xff000, 0x0800, CRC(f9c4a809) SHA1(aea324c3f52dd393f1eed2b856ba11f050a35b93), ROM_SKIP(1) | ROM_BIOS(2) ) /* Label: "iD2616 // T142099WS // (C)INTEL '77 // 0456 // 104531-001" */
+ ROMX_LOAD( "0457_104532-001.a37", 0xff001, 0x0800, CRC(a245ba5c) SHA1(7f67277f866fca5377cb123e9cc405b5fdfe61d3), ROM_SKIP(1) | ROM_BIOS(2) ) /* Label: "iD2616 // T145054WS // (C)INTEL '77 // 0457 // 104532-001" */
+
+ /* proms:
+ * dumped 11/21/09 through 11/29/09 by LN
+ * purposes: (according to sdk-86 user manual from http://www.bitsavers.org/pdf/intel/8086/9800698A_SDK-86_Users_Man_Apr79.pdf)
+ * A12: main address decoding (selects ram or rom or open bus/offboard, see page 2-7)
+ * A22: I/O decoding for 8251, 8279 and optional pair of 8255 chips (in the FFE8-FFFF I/O area; see page 2-6)
+ * A26: ROM address decoding for selecting which of the 4 pairs of roms is active (note that to use the FCxxx and FDxxx pairs requires wiring them into the prototype area, they are not standard; see page 2-5)
+ * A29: RAM address decoding (see page 2-4)
+ */
+ ROM_REGION(0x1000, "proms", 0 ) // all are Intel D3625A 1kx4 (82s137A equivalent)
+ ROM_LOAD( "0036_101993-001.a12", 0x0000, 0x0400, CRC(bb7edbfd) SHA1(8847f9815c7cb8695986743199673920a7d4390d)) /* Label: "iD3625A 0036 // 8142 // 101993-001" */
+ ROM_LOAD( "0035_101992-001.a22", 0x0400, 0x0400, CRC(76aced0c) SHA1(89fa39473e19d8cb6b65d6430d3d683ae2398fb3)) /* Label: "iD3625A 0035 // 8142 // 101992-001" */
+ ROM_LOAD( "0037_101994-001.a26", 0x0800, 0x0400, CRC(d6f33d30) SHA1(41e794bf202266fa57516403e6a80ebbf6c95fdc)) /* Label: "iD3625A 0037 // 8142 // 101994-001" */
+ ROM_LOAD( "0038_101995-001.a29", 0x0C00, 0x0400, CRC(3d2c18bc) SHA1(5e1935cd07fef26b2cf3d8fa7612fe0d8e678c06)) /* Label: "iD3625A 0038 // 8142 // 101995-001" */
+ROM_END
+
+/* Driver */
+
+/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
+COMP( 1979, sdk86, 0, 0, sdk86, sdk86, driver_device, 0, "Intel", "SDK-86", MACHINE_NO_SOUND_HW)