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Diffstat (limited to 'src/mame/drivers/cit220.cpp')
-rw-r--r-- | src/mame/drivers/cit220.cpp | 266 |
1 files changed, 0 insertions, 266 deletions
diff --git a/src/mame/drivers/cit220.cpp b/src/mame/drivers/cit220.cpp deleted file mode 100644 index 9e5ce5d9800..00000000000 --- a/src/mame/drivers/cit220.cpp +++ /dev/null @@ -1,266 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:AJR -/*********************************************************************************************************************************** - -Skeleton driver for VT220-compatible terminals by C. Itoh/CIE Terminals and similar terminals by ADDS. - -The CIT-220+ Video Terminal was introduced as a direct competitor to DEC's VT220. It copied the design of the VT220 closely -enough to provoke a lawsuit, which led to its eventual withdrawal in favor of its successor, the CIT224. - -"COPYRIGHT MICROWEST 1984" can be found in the program ROMs of both the CIT-220+ and Viewpoint 122. The code is clearly similar, -and the SCN2674 video timing parameters appear to be identical. - -************************************************************************************************************************************/ - -#include "emu.h" -//#include "bus/rs232/rs232.h" -#include "cpu/i8085/i8085.h" -#include "cpu/mcs48/mcs48.h" -//#include "machine/eeprompar.h" -#include "machine/i8251.h" -#include "machine/mc68681.h" -#include "machine/nvram.h" -#include "machine/pit8253.h" -#include "video/scn2674.h" -#include "screen.h" - - -class cit220_state : public driver_device -{ -public: - cit220_state(const machine_config &mconfig, device_type type, const char *tag) - : driver_device(mconfig, type, tag) - , m_maincpu(*this, "maincpu") - , m_screen(*this, "screen") - , m_avdc(*this, "avdc") - , m_chargen(*this, "chargen") - { } - - void cit220p(machine_config &config); - void vp122(machine_config &config); - -private: - virtual void machine_start() override; - - DECLARE_WRITE_LINE_MEMBER(sod_w); - DECLARE_WRITE_LINE_MEMBER(cols_w); - SCN2674_DRAW_CHARACTER_MEMBER(draw_character); - - void cit220p_mem_map(address_map &map); - void cit220p_io_map(address_map &map); - void vp122_mem_map(address_map &map); - void vp122_io_map(address_map &map); - void char_map(address_map &map); - void attr_map(address_map &map); - void keyboard_map(address_map &map); - void kbd_io_map(address_map &map); - - required_device<i8085a_cpu_device> m_maincpu; - required_device<screen_device> m_screen; - required_device<scn2674_device> m_avdc; - required_region_ptr<u8> m_chargen; - - bool m_132_cols; -}; - - -void cit220_state::machine_start() -{ - subdevice<i8251_device>("usart")->write_cts(0); - - m_132_cols = false; - save_item(NAME(m_132_cols)); -} - - -WRITE_LINE_MEMBER(cit220_state::sod_w) -{ - // probably asserts PBREQ on SCN2674 to access memory at Exxx -} - -WRITE_LINE_MEMBER(cit220_state::cols_w) -{ - if (!state != m_132_cols) - { - m_132_cols = !state; - m_avdc->set_character_width(m_132_cols ? 9 : 10); - m_avdc->set_unscaled_clock(m_132_cols ? 22'096'000 / 9 : 14'916'000 / 10); - } -} - -void cit220_state::cit220p_mem_map(address_map &map) -{ - map(0x0000, 0x7fff).rom().region("maincpu", 0); - map(0x8000, 0x87ff).ram(); - map(0xa000, 0xa1ff).rom().region("eeprom", 0x800); - map(0xe000, 0xe7ff).ram(); // ??? -} - -void cit220_state::cit220p_io_map(address_map &map) -{ - map(0x00, 0x0f).rw("duart", FUNC(scn2681_device::read), FUNC(scn2681_device::write)); - map(0x10, 0x11).rw("usart", FUNC(i8251_device::read), FUNC(i8251_device::write)); - map(0x20, 0x27).rw(m_avdc, FUNC(scn2674_device::read), FUNC(scn2674_device::write)); - map(0xa0, 0xa0).rw(m_avdc, FUNC(scn2674_device::attr_buffer_r), FUNC(scn2674_device::attr_buffer_w)); - map(0xc0, 0xc0).rw(m_avdc, FUNC(scn2674_device::buffer_r), FUNC(scn2674_device::buffer_w)); -} - -void cit220_state::vp122_mem_map(address_map &map) -{ - map(0x0000, 0x9fff).rom().region("maincpu", 0); - map(0xa000, 0xa7ff).ram().share("nvram"); - map(0xe000, 0xe7ff).noprw(); -} - -void cit220_state::vp122_io_map(address_map &map) -{ - map(0x00, 0x07).rw(m_avdc, FUNC(scn2674_device::read), FUNC(scn2674_device::write)); - map(0x10, 0x1f).rw("duart", FUNC(scn2681_device::read), FUNC(scn2681_device::write)); - map(0x20, 0x21).rw("usart", FUNC(i8251_device::read), FUNC(i8251_device::write)); - map(0x50, 0x50).rw(m_avdc, FUNC(scn2674_device::buffer_r), FUNC(scn2674_device::buffer_w)); - map(0x60, 0x60).rw(m_avdc, FUNC(scn2674_device::attr_buffer_r), FUNC(scn2674_device::attr_buffer_w)); - map(0x70, 0x73).w("pit", FUNC(pit8253_device::write)); -} - - -SCN2674_DRAW_CHARACTER_MEMBER(cit220_state::draw_character) -{ - u16 dots = m_chargen[charcode << 4 | linecount] << 2; - const int width = m_132_cols ? 9 : 10; - - if (BIT(dots, 2)) - dots |= 3; - - for (int i = 0; i < width; i++) - { - bitmap.pix32(y, x++) = BIT(dots, 9) ? rgb_t::white() : rgb_t::black(); - dots <<= 1; - } -} - -void cit220_state::char_map(address_map &map) -{ - map(0x0000, 0x2fff).ram(); -} - -void cit220_state::attr_map(address_map &map) -{ - map(0x0000, 0x2fff).ram(); -} - -void cit220_state::keyboard_map(address_map &map) -{ - map(0x000, 0xfff).rom().region("keyboard", 0); -} - -void cit220_state::kbd_io_map(address_map &map) -{ -} - - -static INPUT_PORTS_START( cit220p ) -INPUT_PORTS_END - - -void cit220_state::cit220p(machine_config &config) -{ - I8085A(config, m_maincpu, 8'000'000); - m_maincpu->set_addrmap(AS_PROGRAM, &cit220_state::cit220p_mem_map); - m_maincpu->set_addrmap(AS_IO, &cit220_state::cit220p_io_map); - m_maincpu->out_sod_func().set(FUNC(cit220_state::sod_w)); - - SCREEN(config, m_screen, SCREEN_TYPE_RASTER); - //m_screen->set_raw(14'916'000, 960, 0, 800, 259, 0, 240); - m_screen->set_raw(22'096'000, 1422, 0, 1188, 259, 0, 240); - m_screen->set_screen_update("avdc", FUNC(scn2674_device::screen_update)); - - SCN2674(config, m_avdc, 22'096'000 / 9); - m_avdc->intr_callback().set_inputline(m_maincpu, I8085_RST65_LINE); - m_avdc->set_character_width(9); // 10 in 80-column modes - m_avdc->set_display_callback(FUNC(cit220_state::draw_character)); - m_avdc->set_addrmap(0, &cit220_state::char_map); - m_avdc->set_addrmap(1, &cit220_state::attr_map); - m_avdc->set_screen(m_screen); - - scn2681_device &duart(SCN2681(config, "duart", 3'686'400)); - duart.irq_cb().set_inputline("maincpu", I8085_RST55_LINE); - duart.outport_cb().set("usart", FUNC(i8251_device::write_txc)).bit(3); // 9600 baud? - duart.outport_cb().append("usart", FUNC(i8251_device::write_rxc)).bit(3); - duart.outport_cb().append(FUNC(cit220_state::cols_w)).bit(7); - - I8251(config, "usart", 4'000'000); - - mcs48_cpu_device &kbdmcu(I8035(config, "kbdmcu", 4'608'000)); - kbdmcu.set_addrmap(AS_PROGRAM, &cit220_state::keyboard_map); - kbdmcu.set_addrmap(AS_IO, &cit220_state::kbd_io_map); -} - -void cit220_state::vp122(machine_config &config) -{ - I8085A(config, m_maincpu, 8_MHz_XTAL); - m_maincpu->set_addrmap(AS_PROGRAM, &cit220_state::vp122_mem_map); - m_maincpu->set_addrmap(AS_IO, &cit220_state::vp122_io_map); - - NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0); // MK48Z02 - - SCREEN(config, m_screen, SCREEN_TYPE_RASTER); - m_screen->set_raw(14.916_MHz_XTAL, 960, 0, 800, 259, 0, 240); - //m_screen->set_raw(22.096_MHz_XTAL, 1422, 0, 1188, 259, 0, 240); - m_screen->set_screen_update("avdc", FUNC(scn2674_device::screen_update)); - - SCN2674(config, m_avdc, 14.916_MHz_XTAL / 10); - m_avdc->intr_callback().set_inputline(m_maincpu, I8085_RST65_LINE); - m_avdc->set_character_width(10); // 9 in 132-column modes - m_avdc->set_display_callback(FUNC(cit220_state::draw_character)); - m_avdc->set_addrmap(0, &cit220_state::char_map); - m_avdc->set_addrmap(1, &cit220_state::attr_map); - m_avdc->set_screen("screen"); - - scn2681_device &duart(SCN2681(config, "duart", 3.6864_MHz_XTAL)); - duart.irq_cb().set_inputline("maincpu", I8085_RST55_LINE); - duart.outport_cb().set("usart", FUNC(i8251_device::write_txc)).bit(3); - duart.outport_cb().append("usart", FUNC(i8251_device::write_rxc)).bit(3); - duart.outport_cb().append(FUNC(cit220_state::cols_w)).bit(7); - - I8251(config, "usart", 8_MHz_XTAL / 2); - - PIT8253(config, "pit", 0); - // Input clocks are video-related and should differ for 80-column and 132-column modes -} - - -ROM_START( cit220p ) - ROM_REGION(0x8000, "maincpu", 0) - ROM_LOAD( "v17_001a.ic23", 0x0000, 0x4000, CRC(2cc43026) SHA1(366f57292c6e44571368c29e3258203779847356) ) - ROM_LOAD( "v17_001b.ic24", 0x4000, 0x4000, CRC(a56b16f1) SHA1(c68f26b35453153f7defcf1cf2b7ad7fe36cc9e7) ) - - ROM_REGION(0x1000, "eeprom", 0) - ROM_LOAD( "eeprom.bin", 0x0000, 0x1000, CRC(7b24878a) SHA1(20086fb792a24339b65abe627aefbcf48e2abcf4) ) // don't know where this fits in - - ROM_REGION(0x1000, "chargen", 0) - ROM_LOAD( "v20_cg.ic17", 0x0000, 0x1000, CRC(76ef7ca9) SHA1(6e7799ca0a41350fbc369bbbd4ab581150f37b10) ) - - ROM_REGION(0x1000, "keyboard", 0) - ROM_LOAD( "v00_kbd.bin", 0x0000, 0x1000, CRC(f9d24190) SHA1(c4e9ef8188afb18de373f2a537ca9b7a315bfb76) ) -ROM_END - -/************************************************************************************************************** - -ADDS Viewpoint 122 (VPT-122). -Chips: D8085AC-2, SCN2674B, SCB2675T, D8251AFC, SCN2681A, D8253C-2, 5x MB8128-15, MK48Z02B-20 -Crystals: 22.096, 14.916, 3.6864, 8.000 - -***************************************************************************************************************/ - -ROM_START( vp122 ) - ROM_REGION(0xc000, "maincpu", 0) - ROM_LOAD( "223-48600.uj1", 0x0000, 0x4000, CRC(4d140c69) SHA1(04aa5a4f0c0e0d07b9dc983a6d626ee88ef8b8ba) ) - ROM_LOAD( "223-48500.ug1", 0x4000, 0x4000, CRC(4e98554d) SHA1(0cbb9cb7efd02a3209caed410ccc8495a5ec1772) ) - ROM_LOAD( "223-49400.uj2", 0x8000, 0x4000, CRC(447d90d3) SHA1(f8c0db824198b5a571eef80cc3eaf1e829aa2c2a) ) - - ROM_REGION(0x2000, "chargen", 0) - ROM_LOAD( "223-48700.uk4", 0x0000, 0x2000, CRC(4dbab4bd) SHA1(18e9a23ba22e2096fa529541fa329f5a56740e62) ) -ROM_END - -COMP(1984, cit220p, 0, 0, cit220p, cit220p, cit220_state, empty_init, "C. Itoh Electronics", "CIT-220+ Video Terminal", MACHINE_NOT_WORKING | MACHINE_IMPERFECT_GRAPHICS | MACHINE_NO_SOUND) -COMP(1985, vp122, 0, 0, vp122, cit220p, cit220_state, empty_init, "ADDS", "Viewpoint 122", MACHINE_NOT_WORKING | MACHINE_IMPERFECT_GRAPHICS | MACHINE_NO_SOUND) |