trunk/src/mess/drivers/evmbug.c
| r0 | r23626 | |
|---|
| 1 | /*************************************************************************** |
| 2 | |
| 3 | Stuart's Breadboard Project. TMS9995 evaluation kit TMAM6095. |
| 4 | |
| 5 | 2013-06-02 Skeleton driver. |
| 6 | |
| 7 | http://www.avjd51.dsl.pipex.com/tms9995_eval_module/tms9995_eval_module.htm |
| 8 | |
| 9 | |
| 10 | ****************************************************************************/ |
| 11 | |
| 12 | #include "emu.h" |
| 13 | #include "cpu/tms9900/tms9900l.h" |
| 14 | #include "machine/terminal.h" |
| 15 | |
| 16 | class evmbug_state : public driver_device |
| 17 | { |
| 18 | public: |
| 19 | evmbug_state(const machine_config &mconfig, device_type type, const char *tag) |
| 20 | : driver_device(mconfig, type, tag) |
| 21 | , m_maincpu(*this, "maincpu") |
| 22 | , m_terminal(*this, TERMINAL_TAG) |
| 23 | { } |
| 24 | |
| 25 | DECLARE_READ8_HANDLER(rs232_r); |
| 26 | DECLARE_WRITE8_HANDLER(rs232_w); |
| 27 | DECLARE_WRITE8_MEMBER(kbd_put); |
| 28 | virtual void machine_reset(); |
| 29 | UINT8 m_term_data; |
| 30 | UINT8 m_term_out; |
| 31 | required_device<cpu_device> m_maincpu; |
| 32 | required_device<generic_terminal_device> m_terminal; |
| 33 | }; |
| 34 | |
| 35 | static ADDRESS_MAP_START( evmbug_mem, AS_PROGRAM, 8, evmbug_state ) |
| 36 | AM_RANGE(0x0000, 0x17ff) AM_ROM |
| 37 | AM_RANGE(0xec00, 0xefff) AM_RAM |
| 38 | ADDRESS_MAP_END |
| 39 | |
| 40 | static ADDRESS_MAP_START( evmbug_io, AS_IO, 8, evmbug_state ) |
| 41 | ADDRESS_MAP_UNMAP_HIGH |
| 42 | AM_RANGE(0x0000, 0x0007) AM_WRITE(rs232_w) |
| 43 | AM_RANGE(0x0000, 0x0002) AM_READ(rs232_r) |
| 44 | ADDRESS_MAP_END |
| 45 | |
| 46 | /* Input ports */ |
| 47 | static INPUT_PORTS_START( evmbug ) |
| 48 | INPUT_PORTS_END |
| 49 | |
| 50 | READ8_MEMBER( evmbug_state::rs232_r ) |
| 51 | { |
| 52 | static UINT8 temp = 0; |
| 53 | temp^=0xff; |
| 54 | if (offset == 1) |
| 55 | return temp; |
| 56 | |
| 57 | if (offset == 2) |
| 58 | { |
| 59 | return 0xff;//(m_term_data) ? 0 : 0xff; |
| 60 | } |
| 61 | |
| 62 | UINT8 ret = m_term_data; |
| 63 | m_term_data = 0; |
| 64 | return ret; |
| 65 | } |
| 66 | |
| 67 | WRITE8_MEMBER( evmbug_state::rs232_w ) |
| 68 | { |
| 69 | if (offset == 0) |
| 70 | m_term_out = 0; |
| 71 | |
| 72 | m_term_out |= (data << offset); |
| 73 | |
| 74 | if (offset == 7) |
| 75 | m_terminal->write(space, 0, m_term_out & 0x7f); |
| 76 | } |
| 77 | |
| 78 | WRITE8_MEMBER( evmbug_state::kbd_put ) |
| 79 | { |
| 80 | m_term_data = data; |
| 81 | } |
| 82 | |
| 83 | static GENERIC_TERMINAL_INTERFACE( terminal_intf ) |
| 84 | { |
| 85 | DEVCB_DRIVER_MEMBER(evmbug_state, kbd_put) |
| 86 | }; |
| 87 | |
| 88 | |
| 89 | void evmbug_state::machine_reset() |
| 90 | { |
| 91 | m_term_data = 0; |
| 92 | } |
| 93 | |
| 94 | static const struct tms9995reset_param evmbug_processor_config = |
| 95 | { |
| 96 | 0, /* disable automatic wait state generation */ |
| 97 | 0, /* no IDLE callback */ |
| 98 | 0 /* no MP9537 mask */ |
| 99 | }; |
| 100 | |
| 101 | static MACHINE_CONFIG_START( evmbug, evmbug_state ) |
| 102 | /* basic machine hardware */ |
| 103 | /* TMS9995 CPU @ 12.0 MHz */ |
| 104 | MCFG_CPU_ADD("maincpu", TMS9995L, 12000000) |
| 105 | MCFG_CPU_CONFIG(evmbug_processor_config) |
| 106 | MCFG_CPU_PROGRAM_MAP(evmbug_mem) |
| 107 | MCFG_CPU_IO_MAP(evmbug_io) |
| 108 | |
| 109 | /* video hardware */ |
| 110 | MCFG_GENERIC_TERMINAL_ADD(TERMINAL_TAG, terminal_intf) |
| 111 | MACHINE_CONFIG_END |
| 112 | |
| 113 | /* ROM definition */ |
| 114 | ROM_START( evmbug ) |
| 115 | ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF ) |
| 116 | // ROM_LOAD( "u8.bin", 0x0000, 0x1000, CRC(bdb8c7bd) SHA1(340829dcb7a65f2e830fd5aff82a312e3ed7918f) ) |
| 117 | // ROM_LOAD( "u9.bin", 0x1000, 0x0800, CRC(4de459ea) SHA1(00a42fe556d4ffe1f85b2ce369f544b07fbd06d9) ) |
| 118 | ROM_LOAD( "evmbug.bin", 0x0000, 0x8000, CRC(a239ec56) SHA1(65b500d7d0f897ce0c320cf3ec32ff4042774599) ) |
| 119 | ROM_END |
| 120 | |
| 121 | /* Driver */ |
| 122 | |
| 123 | /* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ |
| 124 | COMP( 19??, evmbug, 0, 0, evmbug, evmbug, driver_device, 0, "Texas Instruments", "TMAM6095", GAME_NOT_WORKING | GAME_NO_SOUND) |