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-rw-r--r--src/mame/drivers/jade.cpp111
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diff --git a/src/mame/drivers/jade.cpp b/src/mame/drivers/jade.cpp
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+// license:BSD-3-Clause
+// copyright-holders:Robbbert
+/***************************************************************************
+
+ Jade JGZ80 Single board computer on a S100 card.
+
+ 2013-09-12 Skeleton driver.
+
+ No info found as yet.
+
+ It takes about 8 seconds to start up.
+ Type HE to get a list of commands.
+
+****************************************************************************/
+
+#include "emu.h"
+#include "cpu/z80/z80.h"
+#include "machine/i8251.h"
+#include "machine/terminal.h"
+
+#define TERMINAL_TAG "terminal"
+
+class jade_state : public driver_device
+{
+public:
+ jade_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),
+ m_uart(*this, "uart")
+ {
+ }
+
+ DECLARE_WRITE8_MEMBER(kbd_put);
+ DECLARE_READ8_MEMBER(keyin_r);
+ DECLARE_READ8_MEMBER(status_r);
+ DECLARE_READ8_MEMBER(data_r);
+private:
+ UINT8 m_term_data;
+ virtual void machine_reset();
+ required_device<cpu_device> m_maincpu;
+ required_device<generic_terminal_device> m_terminal;
+ required_device<i8251_device> m_uart;
+};
+
+
+static ADDRESS_MAP_START(jade_mem, AS_PROGRAM, 8, jade_state)
+ ADDRESS_MAP_UNMAP_HIGH
+ AM_RANGE(0x0000, 0x07ff) AM_ROM AM_REGION("roms", 0)
+ AM_RANGE(0xe000, 0xffff) AM_RAM
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START(jade_io, AS_IO, 8, jade_state)
+ ADDRESS_MAP_UNMAP_HIGH
+ ADDRESS_MAP_GLOBAL_MASK(0xff)
+ //AM_RANGE(0x30, 0x30) AM_DEVREADWRITE("uart", i8251_device, data_r, data_w)
+ //AM_RANGE(0x32, 0x32) AM_DEVREADWRITE("uart", i8251_device, status_r, control_w)
+ AM_RANGE(0x30, 0x30) AM_READ(keyin_r) AM_DEVWRITE(TERMINAL_TAG, generic_terminal_device, write)
+ AM_RANGE(0x32, 0x32) AM_READ(status_r)
+ADDRESS_MAP_END
+
+/* Input ports */
+static INPUT_PORTS_START( jade )
+INPUT_PORTS_END
+
+READ8_MEMBER( jade_state::keyin_r )
+{
+ UINT8 ret = m_term_data;
+ m_term_data = 0;
+ return (ret) ? ret : 0x13;
+}
+
+READ8_MEMBER( jade_state::status_r )
+{
+ return (m_term_data) ? 5 : 4;
+}
+
+WRITE8_MEMBER( jade_state::kbd_put )
+{
+ m_term_data = data;
+}
+
+void jade_state::machine_reset()
+{
+ m_term_data = 0;
+}
+
+static MACHINE_CONFIG_START( jade, jade_state )
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu",Z80, XTAL_4MHz)
+ MCFG_CPU_PROGRAM_MAP(jade_mem)
+ MCFG_CPU_IO_MAP(jade_io)
+
+ /* video hardware */
+ MCFG_DEVICE_ADD(TERMINAL_TAG, GENERIC_TERMINAL, 0)
+ MCFG_GENERIC_TERMINAL_KEYBOARD_CB(WRITE8(jade_state, kbd_put))
+
+ /* Devices */
+ MCFG_DEVICE_ADD("uart", I8251, 0)
+MACHINE_CONFIG_END
+
+/* ROM definition */
+ROM_START( jade )
+ ROM_REGION( 0x800, "roms", 0 )
+ ROM_LOAD( "jgz80.rom", 0x0000, 0x0800, CRC(90c4a1ef) SHA1(8a93a11051cc27f3edca24f0f4297ebe0099964e) )
+ROM_END
+
+/* Driver */
+
+/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
+COMP( 19??, jade, 0, 0, jade, jade, driver_device, 0, "Jade", "JGZ80", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW )