// license:BSD-3-Clause // copyright-holders: Dirk Best /**************************************************************************** Termtek TK-635 terminal Hardware: - AMD N80C188-25 - TERMTEK TKA-200 - 128k + 32k RAM - 256 KB flash memory Features: - 31.5khz or 48.1khz horizontal - 70/72 hz vertical - 16 background/foreground/border colors - 24x80/132, 25x80/132, 42x80/132, 43x80/132 - Standard PC/AT keyboard Notes: - Identical to the Qume QVT-72 Plus? TODO: - Everything ****************************************************************************/ #include "emu.h" #include "cpu/i86/i186.h" #include "emupal.h" #include "screen.h" class tk635_state : public driver_device { public: tk635_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), m_maincpu(*this, "maincpu"), m_ram(*this, "ram"), m_charram(*this, "charram"), m_nmi_enable(false), m_voffset(0) { } void tk635(machine_config &config); protected: virtual void machine_start() override; virtual void machine_reset() override; private: required_device m_maincpu; required_shared_ptr m_ram; required_shared_ptr m_charram; void mem_map(address_map &map); void io_map(address_map &map); uint32_t screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect); void vblank_w(int state); uint8_t unk_00_r(); void voffset_lsb_w(uint8_t data); void voffset_msb_w(uint8_t data); uint8_t unk_11_r(); uint8_t unk_19_r(); void unk_f0_w(uint8_t data); bool m_nmi_enable; uint16_t m_voffset; }; void tk635_state::mem_map(address_map &map) { map(0x00000, 0x1ffff).ram().share("ram"); map(0x20000, 0x23fff).ram().share("charram"); map(0xc0000, 0xfffff).rom().region("maincpu", 0); } void tk635_state::io_map(address_map &map) { map(0x00, 0x00).r(FUNC(tk635_state::unk_00_r)); map(0x04, 0x04).w(FUNC(tk635_state::voffset_lsb_w)); map(0x05, 0x05).w(FUNC(tk635_state::voffset_msb_w)); map(0x11, 0x11).r(FUNC(tk635_state::unk_11_r)); // map(0x13, 0x13).ram(); // host port map(0x19, 0x19).r(FUNC(tk635_state::unk_19_r)); // map(0x1b, 0x1b).ram(); // aux port map(0xf0, 0xf0).w(FUNC(tk635_state::unk_f0_w)); } static INPUT_PORTS_START( tk635 ) INPUT_PORTS_END static const gfx_layout char_layout_8x16 = { 8, 16, 512, 1, { 0 }, { STEP8(0, 1) }, { STEP16(0, 8) }, 8*32 }; static GFXDECODE_START(chars) GFXDECODE_RAM("charram", 0, char_layout_8x16, 0, 1) GFXDECODE_END uint32_t tk635_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) { for (int y = 0; y < 26; y++) { for (int x = 0; x < 132; x++) { uint8_t code = m_ram[(0x10000 | m_voffset) + (y * 132) + x]; // draw 16 lines for (int i = 0; i < 16; i++) { uint8_t data = m_charram[(code << 5) + i]; // 8 pixels of the character for (int p = 0; p < 8; p++) bitmap.pix32(y * 16 + i, x * 9 + p) = BIT(data, 7 - p) ? rgb_t::white() : rgb_t::black(); // 9th pixel empty bitmap.pix32(y * 16 + i, x * 9 + 8) = rgb_t::black(); } } } return 0; } void tk635_state::vblank_w(int state) { if (state == 1 && m_nmi_enable) m_maincpu->pulse_input_line(INPUT_LINE_NMI, attotime::zero); } uint8_t tk635_state::unk_00_r() { logerror("unk_00_r: %02x\n", 0x10); return 0x10; } void tk635_state::voffset_lsb_w(uint8_t data) { m_voffset = (m_voffset & 0xff00) | data; } void tk635_state::voffset_msb_w(uint8_t data) { m_voffset = (data << 8) | (m_voffset & 0x00ff); } uint8_t tk635_state::unk_11_r() { logerror("unk_11_r: %02x\n", 0x09); return 0x09; } uint8_t tk635_state::unk_19_r() { logerror("unk_19_r: %02x\n", 0x09); return 0x09; } void tk635_state::unk_f0_w(uint8_t data) { logerror("unk_f0_w: %02x\n", data); m_nmi_enable = true; } void tk635_state::machine_start() { // register for save states save_item(NAME(m_nmi_enable)); save_item(NAME(m_voffset)); } void tk635_state::machine_reset() { m_nmi_enable = false; } void tk635_state::tk635(machine_config &config) { I80188(config, m_maincpu, 25000000); m_maincpu->set_addrmap(AS_PROGRAM, &tk635_state::mem_map); m_maincpu->set_addrmap(AS_IO, &tk635_state::io_map); screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER)); screen.set_refresh_hz(70); screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500)); // not accurate screen.set_screen_update(FUNC(tk635_state::screen_update)); screen.set_size(1188, 416); screen.set_visarea(0, 1188-1, 0, 416-1); screen.screen_vblank().set(FUNC(tk635_state::vblank_w)); PALETTE(config, "palette").set_entries(16); GFXDECODE(config, "gfxdecode", "palette", chars); } ROM_START( tk635 ) ROM_REGION(0x40000, "maincpu", 0) ROM_LOAD("fw_v0_23.bin", 0x00000, 0x40000, CRC(bec6fdae) SHA1(37dc46f6b761d874bd1627a1137bc4082e364698)) ROM_END COMP( 199?, tk635, 0, 0, tk635, tk635, tk635_state, empty_init, "Termtek", "TK-635", MACHINE_NOT_WORKING | MACHINE_NO_SOUND | MACHINE_SUPPORTS_SAVE )