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https://github.com/holub/mame
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125 lines
3.1 KiB
C
125 lines
3.1 KiB
C
/***************************************************************************
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Stuart's Breadboard Project. TMS9995 evaluation kit TMAM6095.
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2013-06-02 Skeleton driver.
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http://www.avjd51.dsl.pipex.com/tms9995_eval_module/tms9995_eval_module.htm
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****************************************************************************/
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#include "emu.h"
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#include "cpu/tms9900/tms9900l.h"
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#include "machine/terminal.h"
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class evmbug_state : public driver_device
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{
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public:
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evmbug_state(const machine_config &mconfig, device_type type, const char *tag)
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: driver_device(mconfig, type, tag)
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, m_maincpu(*this, "maincpu")
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, m_terminal(*this, TERMINAL_TAG)
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{ }
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DECLARE_READ8_HANDLER(rs232_r);
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DECLARE_WRITE8_HANDLER(rs232_w);
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DECLARE_WRITE8_MEMBER(kbd_put);
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virtual void machine_reset();
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UINT8 m_term_data;
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UINT8 m_term_out;
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required_device<cpu_device> m_maincpu;
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required_device<generic_terminal_device> m_terminal;
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};
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static ADDRESS_MAP_START( evmbug_mem, AS_PROGRAM, 8, evmbug_state )
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AM_RANGE(0x0000, 0x17ff) AM_ROM
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AM_RANGE(0xec00, 0xefff) AM_RAM
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ADDRESS_MAP_END
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static ADDRESS_MAP_START( evmbug_io, AS_IO, 8, evmbug_state )
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ADDRESS_MAP_UNMAP_HIGH
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AM_RANGE(0x0000, 0x0007) AM_WRITE(rs232_w)
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AM_RANGE(0x0000, 0x0002) AM_READ(rs232_r)
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ADDRESS_MAP_END
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/* Input ports */
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static INPUT_PORTS_START( evmbug )
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INPUT_PORTS_END
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READ8_MEMBER( evmbug_state::rs232_r )
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{
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static UINT8 temp = 0;
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temp^=0xff;
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if (offset == 1)
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return temp;
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if (offset == 2)
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{
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return 0xff;//(m_term_data) ? 0 : 0xff;
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}
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UINT8 ret = m_term_data;
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m_term_data = 0;
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return ret;
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}
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WRITE8_MEMBER( evmbug_state::rs232_w )
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{
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if (offset == 0)
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m_term_out = 0;
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m_term_out |= (data << offset);
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if (offset == 7)
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m_terminal->write(space, 0, m_term_out & 0x7f);
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}
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WRITE8_MEMBER( evmbug_state::kbd_put )
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{
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m_term_data = data;
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}
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static GENERIC_TERMINAL_INTERFACE( terminal_intf )
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{
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DEVCB_DRIVER_MEMBER(evmbug_state, kbd_put)
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};
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void evmbug_state::machine_reset()
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{
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m_term_data = 0;
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}
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static const struct tms9995reset_param evmbug_processor_config =
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{
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0, /* disable automatic wait state generation */
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0, /* no IDLE callback */
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0 /* no MP9537 mask */
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};
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static MACHINE_CONFIG_START( evmbug, evmbug_state )
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/* basic machine hardware */
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/* TMS9995 CPU @ 12.0 MHz */
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MCFG_CPU_ADD("maincpu", TMS9995L, 12000000)
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MCFG_CPU_CONFIG(evmbug_processor_config)
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MCFG_CPU_PROGRAM_MAP(evmbug_mem)
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MCFG_CPU_IO_MAP(evmbug_io)
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/* video hardware */
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MCFG_GENERIC_TERMINAL_ADD(TERMINAL_TAG, terminal_intf)
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MACHINE_CONFIG_END
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/* ROM definition */
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ROM_START( evmbug )
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ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
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// ROM_LOAD( "u8.bin", 0x0000, 0x1000, CRC(bdb8c7bd) SHA1(340829dcb7a65f2e830fd5aff82a312e3ed7918f) )
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// ROM_LOAD( "u9.bin", 0x1000, 0x0800, CRC(4de459ea) SHA1(00a42fe556d4ffe1f85b2ce369f544b07fbd06d9) )
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ROM_LOAD( "evmbug.bin", 0x0000, 0x8000, CRC(a239ec56) SHA1(65b500d7d0f897ce0c320cf3ec32ff4042774599) )
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ROM_END
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/* Driver */
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/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
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COMP( 19??, evmbug, 0, 0, evmbug, evmbug, driver_device, 0, "Texas Instruments", "TMAM6095", GAME_NOT_WORKING | GAME_NO_SOUND)
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