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diff --git a/src/mame/drivers/d6809.cpp b/src/mame/drivers/d6809.cpp
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+++ b/src/mame/drivers/d6809.cpp
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+// license:BSD-3-Clause
+// copyright-holders:Robbbert
+/*******************************************************************************
+
+ 6809 Portable
+
+ 12/05/2009 Skeleton driver.
+ 21/09/2011 connected to terminal, notes added [Robbbert]
+
+Chips used:
+- 6809E CPU
+- 6845 CRTC
+- 6840 CTC
+- 6551 UART Console
+- 6551 UART Aux
+- 6850 UART Unknown purpose
+- uPD765 FDC
+- 2764 8K ROM for CPU
+- 2732 4K ROM for Chargen (not dumped)
+- 6x 6264 RAM
+- 3x 5516 RAM
+- XTAL: 16MHz
+
+So much for the official documentation.
+
+In practice, it reads/writes to a terminal, and doesn't use most of the other
+devices.
+
+'maincpu' (F9DD): unmapped program memory write to 00F0 = 05 & FF
+'maincpu' (F9E3): unmapped program memory read from 0001 & FF <----- these 2 are CLR 0001
+'maincpu' (F9E3): unmapped program memory write to 0001 = 00 & FF
+'maincpu' (F9E6): unmapped program memory read from 0005 & FF <----- these 2 are CLR 0005
+'maincpu' (F9E6): unmapped program memory write to 0005 = 00 & FF
+'maincpu' (F9E9): unmapped program memory write to 0002 = 0B & FF <-- these 2 are STD 0002
+'maincpu' (F9E9): unmapped program memory write to 0003 = 1E & FF
+'maincpu' (F9EC): unmapped program memory write to 0006 = 0B & FF <-- these 2 are STD 0006
+'maincpu' (F9EC): unmapped program memory write to 0007 = 1E & FF
+'maincpu' (FA4D): unmapped program memory write to 00F2 = 00 & FF <-- the remainder seems to be disk related
+'maincpu' (FA52): unmapped program memory write to 00F3 = 00 & FF
+'maincpu' (FA57): unmapped program memory write to 00F4 = 00 & FF
+'maincpu' (FA5C): unmapped program memory write to 00F5 = 00 & FF
+'maincpu' (FA61): unmapped program memory write to 00F6 = 02 & FF
+'maincpu' (FA66): unmapped program memory write to 00F7 = 09 & FF
+'maincpu' (FA6B): unmapped program memory write to 00F0 = 01 & FF
+'maincpu' (FA6E): unmapped program memory read from 00F0 & FF
+'maincpu' (FA4D): unmapped program memory write to 00F2 = 00 & FF
+'maincpu' (FA52): unmapped program memory write to 00F3 = 00 & FF
+'maincpu' (FA57): unmapped program memory write to 00F4 = 00 & FF
+'maincpu' (FA5C): unmapped program memory write to 00F5 = 00 & FF
+'maincpu' (FA61): unmapped program memory write to 00F6 = 02 & FF
+'maincpu' (FA66): unmapped program memory write to 00F7 = 09 & FF
+'maincpu' (FA6B): unmapped program memory write to 00F0 = 01 & FF
+'maincpu' (FA6E): unmapped program memory read from 00F0 & FF
+'maincpu' (FA4D): unmapped program memory write to 00F2 = 00 & FF
+'maincpu' (FA52): unmapped program memory write to 00F3 = 00 & FF
+'maincpu' (FA57): unmapped program memory write to 00F4 = 00 & FF
+'maincpu' (FA5C): unmapped program memory write to 00F5 = 00 & FF
+'maincpu' (FA61): unmapped program memory write to 00F6 = 02 & FF
+'maincpu' (FA66): unmapped program memory write to 00F7 = 09 & FF
+'maincpu' (FA6B): unmapped program memory write to 00F0 = 01 & FF
+'maincpu' (FA6E): unmapped program memory read from 00F0 & FF
+'maincpu' (FA41): unmapped program memory write to 00F2 = 00 & FF
+'maincpu' (FA46): unmapped program memory write to 00F0 = 04 & FF
+'maincpu' (FA82): unmapped program memory read from 00F0 & FF
+'maincpu' (FA4D): unmapped program memory write to 00F2 = 00 & FF
+'maincpu' (FA52): unmapped program memory write to 00F3 = 00 & FF
+'maincpu' (FA57): unmapped program memory write to 00F4 = 00 & FF
+'maincpu' (FA5C): unmapped program memory write to 00F5 = 00 & FF
+'maincpu' (FA61): unmapped program memory write to 00F6 = 02 & FF
+'maincpu' (FA66): unmapped program memory write to 00F7 = 09 & FF
+'maincpu' (FA6B): unmapped program memory write to 00F0 = 01 & FF
+'maincpu' (FA6E): unmapped program memory read from 00F0 & FF
+'maincpu' (FA4D): unmapped program memory write to 00F2 = 00 & FF
+'maincpu' (FA52): unmapped program memory write to 00F3 = 00 & FF
+'maincpu' (FA57): unmapped program memory write to 00F4 = 00 & FF
+'maincpu' (FA5C): unmapped program memory write to 00F5 = 00 & FF
+'maincpu' (FA61): unmapped program memory write to 00F6 = 02 & FF
+'maincpu' (FA66): unmapped program memory write to 00F7 = 09 & FF
+'maincpu' (FA6B): unmapped program memory write to 00F0 = 01 & FF
+'maincpu' (FA6E): unmapped program memory read from 00F0 & FF <-- now it gives up & prints an error
+
+
+**********************************************************************************/
+
+#include "emu.h"
+#include "cpu/m6809/m6809.h"
+#include "machine/terminal.h"
+
+#define TERMINAL_TAG "terminal"
+
+class d6809_state : public driver_device
+{
+public:
+ d6809_state(const machine_config &mconfig, device_type type, const char *tag)
+ : driver_device(mconfig, type, tag),
+ m_maincpu(*this, "maincpu"),
+ m_terminal(*this, TERMINAL_TAG)
+ {
+ }
+
+ required_device<cpu_device> m_maincpu;
+ required_device<generic_terminal_device> m_terminal;
+ DECLARE_WRITE8_MEMBER( kbd_put );
+ DECLARE_READ8_MEMBER( term_r );
+ DECLARE_WRITE8_MEMBER( term_w );
+ UINT8 m_term_data;
+ virtual void machine_reset();
+};
+
+READ8_MEMBER( d6809_state::term_r )
+{
+ UINT8 ret = m_term_data;
+ m_term_data = 0;
+ return ret;
+}
+
+WRITE8_MEMBER( d6809_state::term_w )
+{
+ if ((data > 0) && (data < 0x80))
+ m_terminal->write(space, 0, data);
+}
+
+static ADDRESS_MAP_START( d6809_mem, AS_PROGRAM, 8, d6809_state )
+ ADDRESS_MAP_UNMAP_HIGH
+ // 00-FF is for various devices.
+ AM_RANGE(0x00ff, 0x00ff) AM_READWRITE(term_r,term_w)
+ AM_RANGE(0x1000, 0xdfff) AM_RAM
+ AM_RANGE(0xe000, 0xffff) AM_ROM
+ADDRESS_MAP_END
+
+
+/* Input ports */
+static INPUT_PORTS_START( d6809 )
+INPUT_PORTS_END
+
+
+WRITE8_MEMBER( d6809_state::kbd_put )
+{
+ m_term_data = data;
+}
+
+void d6809_state::machine_reset()
+{
+}
+
+
+static MACHINE_CONFIG_START( d6809, d6809_state )
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu",M6809E, XTAL_4MHz)
+ MCFG_CPU_PROGRAM_MAP(d6809_mem)
+
+
+ /* video hardware */
+ MCFG_DEVICE_ADD(TERMINAL_TAG, GENERIC_TERMINAL, 0)
+ MCFG_GENERIC_TERMINAL_KEYBOARD_CB(WRITE8(d6809_state, kbd_put))
+MACHINE_CONFIG_END
+
+/* ROM definition */
+ROM_START( d6809 )
+ ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
+ ROM_LOAD( "d6809.rom", 0xe000, 0x2000, CRC(2ceb40b8) SHA1(780111541234b4f0f781a118d955df61daa56e7e))
+ROM_END
+
+/* Driver */
+
+/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
+COMP( 1983, d6809, 0, 0, d6809, d6809, driver_device, 0, "Dunfield", "6809 Portable", MACHINE_IS_SKELETON | MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW)