// license:BSD-3-Clause // copyright-holders:Miodrag Milanovic /*************************************************************************** Terak 8510A 2009-02-23 Skeleton driver. Known chips: i8257 DMA, i8272a FDC Floppies were 8 inch IBM format. ****************************************************************************/ #include "emu.h" #include "cpu/t11/t11.h" #include "screen.h" class terak_state : public driver_device { public: terak_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") { } DECLARE_READ16_MEMBER(terak_fdc_status_r); DECLARE_WRITE16_MEMBER(terak_fdc_command_w); DECLARE_READ16_MEMBER(terak_fdc_data_r); DECLARE_WRITE16_MEMBER(terak_fdc_data_w); uint32_t screen_update_terak(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); void terak(machine_config &config); void mem_map(address_map &map); private: uint8_t m_unit; uint8_t m_cmd; virtual void machine_reset() override; virtual void video_start() override; required_device m_maincpu; }; READ16_MEMBER( terak_state::terak_fdc_status_r ) { logerror("terak_fdc_status_r\n"); if (m_cmd==3) { logerror("cmd is 3\n"); return 0xffff; } return 0; } WRITE16_MEMBER( terak_state::terak_fdc_command_w ) { m_unit = (data >> 8) & 0x03; m_cmd = (data >> 1) & 0x07; logerror("terak_fdc_command_w %04x [%d %d]\n",data,m_unit,m_cmd); } READ16_MEMBER( terak_state::terak_fdc_data_r ) { logerror("terak_fdc_data_r\n"); return 0; } WRITE16_MEMBER( terak_state::terak_fdc_data_w ) { logerror("terak_fdc_data_w %04x\n",data); } void terak_state::mem_map(address_map &map) { map.unmap_value_high(); map(0x0000, 0xf5ff).ram(); // RAM // octal map(0173000, 0173177).rom(); // ROM map(0177000, 0177001).rw(this, FUNC(terak_state::terak_fdc_status_r), FUNC(terak_state::terak_fdc_command_w)); map(0177002, 0177003).rw(this, FUNC(terak_state::terak_fdc_data_r), FUNC(terak_state::terak_fdc_data_w)); } /* Input ports */ static INPUT_PORTS_START( terak ) INPUT_PORTS_END void terak_state::machine_reset() { } void terak_state::video_start() { } uint32_t terak_state::screen_update_terak(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { return 0; } MACHINE_CONFIG_START(terak_state::terak) /* basic machine hardware */ MCFG_DEVICE_ADD("maincpu",T11, XTAL(4'000'000)) MCFG_T11_INITIAL_MODE(6 << 13) MCFG_DEVICE_PROGRAM_MAP(mem_map) /* video hardware */ MCFG_SCREEN_ADD("screen", RASTER) MCFG_SCREEN_REFRESH_RATE(50) MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */ MCFG_SCREEN_SIZE(640, 480) MCFG_SCREEN_VISIBLE_AREA(0, 640-1, 0, 480-1) MCFG_SCREEN_UPDATE_DRIVER(terak_state, screen_update_terak) MCFG_SCREEN_PALETTE("palette") MCFG_PALETTE_ADD_MONOCHROME("palette") MACHINE_CONFIG_END /* ROM definition */ ROM_START( terak ) ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF ) ROM_LOAD( "terak.rom", 0173000, 0x0080, CRC(fd654b8e) SHA1(273a9933b68a290c5aedcd6d69faa7b1d22c0344)) ROM_REGION( 0x2000, "kbd", 0) // keytronic keyboard, roms are unlabelled, type 6301-1J. CPU is 30293E-003. No crystal. ROM_LOAD( "82s129.z2", 0x0000, 0x0100, CRC(a5dce419) SHA1(819197a03eb9b6ea3318f5afc37c0b436dd747a7) ) ROM_LOAD( "82s129.z1", 0x0100, 0x0100, CRC(f34e061f) SHA1(3cb354b2680056d4b3234c680958d4591279ac8a) ) ROM_END /* Driver */ // YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS COMP( 1977, terak, 0, 0, terak, terak, terak_state, empty_init, "Terak", "Terak 8510A", MACHINE_NOT_WORKING | MACHINE_NO_SOUND )