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Diffstat (limited to 'src/mame/drivers/cit101.cpp')
-rw-r--r-- | src/mame/drivers/cit101.cpp | 430 |
1 files changed, 0 insertions, 430 deletions
diff --git a/src/mame/drivers/cit101.cpp b/src/mame/drivers/cit101.cpp deleted file mode 100644 index 5d1049db3c2..00000000000 --- a/src/mame/drivers/cit101.cpp +++ /dev/null @@ -1,430 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:AJR -/*********************************************************************************************************************************** - -Preliminary driver for first-generation C. Itoh video terminals. - -CIT-101 (released December 1980) - C. Itoh's first terminal, based on DEC VT100. ANSI X3.64 and V52 compatible. - 12-inch monochrome screen displaying 24 lines of 80 or 132 characters. - 8 x 10 character cell, 10 x 10 (80 columns)/9 x 10 (132 columns) display cell. - 15,600 Hz horizontal frequency; 50 Hz/60 Hz vertical frequency selectable. - Cursor may be selected as blinking or solid block/underline, or invisible. - 7 or 8 bit ASCII characters. - RS232-C or 20 mA current loop communications and auxiliary (printer) ports. - 85-key detachable keyboard with 7 LEDs and settable key click. -CIT-80 (released September 1981) - "Entry-level version" of CIT-101. - 12-inch monochrome screen displaying 24 lines of 80 characters. - 7-bit characters only. -CIT-161 (released 1982) - Colorized version of the CIT-101. - 12-inch color screen displaying 24 lines of 80 or 132 characters. - 64 combinations of 8 colors are programmable. -CIT-500 (released 1982) - Word processing terminal with full page display. - 15-inch vertically oriented monochrome screen with tilt/swivel. - 64 lines of 80 characters (interlaced). - 105-key keyboard. -CIT-101e (released 1983) - Ergonomic redesign of CIT-101. - Competitive with DEC VT220 (which was released several months later). - 14-inch monochrome screen with tilt/swivel, 24 lines of 80 or 132 characters. - 85-key low-profile keyboard. -CIG-201 - Plug-in graphics card for CIT-101 and CIT-101e. - Compatible with Tektronix 4010/4014. -CIG-261 - Plug-in color graphics card for CIT-161. - Compatible with Tektronix 4010/4014. -CIG-267 - Plug-in color graphics card for CIT-161. - Compatible with Tektronix 4027A. - -Special SET-UP control codes: -* CTRL+S: Save settings to NVR -* CTRL+R: Recall settings from NVR -* CTRL+D: Restore default NVR settings -* CTRL+A: Set answerback message -* CTRL+X: Enable/disable Bidirectional Auxiliary I/O Channel and SET-UP D Mode - (undocumented; SET-UP B Mode only) - -************************************************************************************************************************************/ - -#include "emu.h" -#include "bus/rs232/rs232.h" -#include "cpu/i8085/i8085.h" -#include "machine/er2055.h" -#include "machine/i8251.h" -#include "machine/input_merger.h" -#include "machine/pit8253.h" -#include "machine/i8255.h" -#include "screen.h" - -#include "machine/cit101_kbd.h" - - -class cit101_state : public driver_device -{ -public: - cit101_state(const machine_config &mconfig, device_type type, const char *tag) - : driver_device(mconfig, type, tag) - , m_screen(*this, "screen") - , m_nvr(*this, "nvr") - , m_comuart(*this, "comuart") - , m_kbduart(*this, "kbduart") - , m_chargen(*this, "chargen") - , m_mainram(*this, "mainram") - , m_extraram(*this, "extraram") - { } - - void cit101(machine_config &config); -protected: - virtual void machine_start() override; -private: - void draw_line(uint32_t *pixptr, int minx, int maxx, int line, bool last_line, u16 rowaddr, u16 rowattr, u8 scrattr); - u32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect); - - DECLARE_READ8_MEMBER(c000_ram_r); - DECLARE_WRITE8_MEMBER(c000_ram_w); - DECLARE_READ8_MEMBER(e0_latch_r); - DECLARE_WRITE8_MEMBER(e0_latch_w); - - DECLARE_WRITE_LINE_MEMBER(blink_w); - DECLARE_WRITE8_MEMBER(screen_control_w); - DECLARE_WRITE8_MEMBER(brightness_w); - - DECLARE_WRITE8_MEMBER(nvr_address_w); - DECLARE_READ8_MEMBER(nvr_data_r); - DECLARE_WRITE8_MEMBER(nvr_data_w); - DECLARE_WRITE8_MEMBER(nvr_control_w); - - void mem_map(address_map &map); - void io_map(address_map &map); - - u8 m_e0_latch; - - bool m_blink; - u8 m_brightness; - - required_device<screen_device> m_screen; - required_device<er2055_device> m_nvr; - required_device<i8251_device> m_comuart; - required_device<i8251_device> m_kbduart; - required_region_ptr<u8> m_chargen; - required_shared_ptr<u8> m_mainram; - required_shared_ptr<u8> m_extraram; -}; - - -void cit101_state::machine_start() -{ - m_comuart->write_cts(0); - m_kbduart->write_cts(0); - - m_brightness = 0xff; - - save_item(NAME(m_e0_latch)); - save_item(NAME(m_blink)); - save_item(NAME(m_brightness)); -} - - -void cit101_state::draw_line(uint32_t *pixptr, int minx, int maxx, int line, bool last_line, u16 rowaddr, u16 rowattr, u8 scrattr) -{ - // Character attribute bit 0: underline (also used to render cursor) - // Character attribute bit 1: reverse video (also used to render cursor) - // Character attribute bit 2: boldface - // Character attribute bit 3: blinking (half intensity) - - const int char_width = BIT(scrattr, 1) ? 10 : 9; - int c = 0; - u8 attr = m_extraram[rowaddr]; - u8 char_data = m_chargen[(m_mainram[rowaddr] << 4) | line]; - if (last_line && BIT(attr, 0)) - char_data ^= 0xff; - rgb_t on_color = (BIT(attr, 1) != BIT(scrattr, 0)) ? rgb_t::black() : rgb_t(m_brightness, m_brightness, m_brightness); - rgb_t off_color = (BIT(attr, 1) != BIT(scrattr, 0)) ? rgb_t(m_brightness, m_brightness, m_brightness) : rgb_t::black(); - if (BIT(attr, 3) && m_blink) - on_color = rgb_t(m_brightness * 0.75, m_brightness * 0.75, m_brightness * 0.75); - bool last_bit = false; - for (int x = 0; x <= maxx; x++) - { - const bool cur_bit = BIT(char_data, 7); - if (x >= minx) - pixptr[x] = (cur_bit || (BIT(attr, 2) && last_bit)) ? on_color : off_color; - last_bit = cur_bit; - - c++; - if (!BIT(rowattr, 9) || !BIT(c, 0)) - { - if (c < (BIT(rowattr, 9) ? char_width << 1 : char_width)) - char_data = (char_data << 1) | (char_data & 1); - else - { - c = 0; - rowaddr = (rowaddr + 1) & 0x3fff; - attr = m_extraram[rowaddr]; - char_data = m_chargen[(m_mainram[rowaddr] << 4) | line]; - if (last_line && BIT(attr, 0)) - char_data ^= 0xff; - on_color = BIT(attr, 1) ? rgb_t::black() : rgb_t(m_brightness, m_brightness, m_brightness); - off_color = BIT(attr, 1) ? rgb_t(m_brightness, m_brightness, m_brightness) : rgb_t::black(); - if (BIT(attr, 3) && m_blink) - on_color = rgb_t(m_brightness * 0.75, m_brightness * 0.75, m_brightness * 0.75); - last_bit = false; - } - } - } -} - -u32 cit101_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) -{ - // While screen height is fixed at 240 pixels, the number of character rows and the height of each row are not. - // The "Set-Up" screens configure 3 ordinary 10-pixel rows on the top (using two for double-height characters) - // and 2 more on the bottom, separated by 11 blank rows of 16 pixels and 1 blank row of 14 pixels. This is - // also used to implement the "smooth scroll" option. - - const u8 scrattr = m_extraram[0]; - - int y = 0; - for (u16 rowptr = m_mainram[0]; y <= cliprect.bottom(); rowptr += 2) - { - const u16 rowattr = m_mainram[rowptr] | m_extraram[rowptr] << 8; - const int rowlines = 16 - ((rowattr & 0x0f0) >> 4); - - int z = 0; - if (y < cliprect.top()) - { - z = cliprect.top() - y; - if (z >= rowlines) - { - y += rowlines; - continue; - } - y = cliprect.top(); - } - - const u16 rowaddr = m_mainram[rowptr + 1] | (m_extraram[rowptr + 1] & 0x3f) << 8; - while (y <= cliprect.bottom()) - { - const int line = ((z / (BIT(rowattr, 8) ? 2 : 1)) + (rowattr & 0x00f)) & 15; - const bool last_line = z++ == rowlines - 1; - draw_line(&bitmap.pix32(y++), cliprect.left(), cliprect.right(), line, last_line, rowaddr, rowattr, scrattr); - if (last_line) - break; - } - } - return 0; -} - - -READ8_MEMBER(cit101_state::c000_ram_r) -{ - if (!machine().side_effects_disabled()) - m_e0_latch = m_extraram[offset]; - return m_mainram[offset]; -} - -WRITE8_MEMBER(cit101_state::c000_ram_w) -{ - m_extraram[offset] = m_e0_latch; - m_mainram[offset] = data; -} - -READ8_MEMBER(cit101_state::e0_latch_r) -{ - return m_e0_latch; -} - -WRITE8_MEMBER(cit101_state::e0_latch_w) -{ - m_e0_latch = data; -} - -WRITE_LINE_MEMBER(cit101_state::blink_w) -{ - m_blink = state; -} - -WRITE8_MEMBER(cit101_state::screen_control_w) -{ - if ((m_extraram[0] & 0x06) != (data & 0x06)) - { - const int height = BIT(data, 2) ? 312 : 260; - const attoseconds_t frame_period = HZ_TO_ATTOSECONDS(BIT(data, 2) ? 50 : 60); - if (BIT(data, 1)) - { - const rectangle visarea(0, 799, 0, 239); - m_screen->set_unscaled_clock(14.976_MHz_XTAL); - m_screen->configure(960, height, visarea, frame_period); - } - else - { - const rectangle visarea(0, 1187, 0, 239); - m_screen->set_unscaled_clock(22.464_MHz_XTAL); - m_screen->configure(1440, height, visarea, frame_period); - } - } - - m_extraram[0] = data; -} - -WRITE8_MEMBER(cit101_state::brightness_w) -{ - // Function of upper 3 bits is unknown - m_brightness = pal5bit(~data & 0x1f); -} - -WRITE8_MEMBER(cit101_state::nvr_address_w) -{ - m_nvr->set_address(data & 0x3f); - m_nvr->set_clk(BIT(data, 6)); -} - -READ8_MEMBER(cit101_state::nvr_data_r) -{ - return m_nvr->data(); -} - -WRITE8_MEMBER(cit101_state::nvr_data_w) -{ - m_nvr->set_data(data); -} - -WRITE8_MEMBER(cit101_state::nvr_control_w) -{ - m_nvr->set_control(BIT(data, 5), !BIT(data, 4), BIT(data, 7), BIT(data, 6)); -} - -void cit101_state::mem_map(address_map &map) -{ - map(0x0000, 0x3fff).rom().region("maincpu", 0); - map(0x4000, 0x7fff).ram().share("mainram"); - map(0x8000, 0xbfff).ram().share("extraram"); // only 4 bits wide? - map(0x8000, 0x8000).w(FUNC(cit101_state::screen_control_w)); - map(0xc000, 0xdfff).rw(FUNC(cit101_state::c000_ram_r), FUNC(cit101_state::c000_ram_w)); - map(0xfc00, 0xfc01).rw("auxuart", FUNC(i8251_device::read), FUNC(i8251_device::write)); - map(0xfc20, 0xfc21).rw("comuart", FUNC(i8251_device::read), FUNC(i8251_device::write)); - map(0xfc40, 0xfc41).rw("kbduart", FUNC(i8251_device::read), FUNC(i8251_device::write)); - map(0xfc60, 0xfc63).rw("ppi", FUNC(i8255_device::read), FUNC(i8255_device::write)); - map(0xfc80, 0xfc83).w("pit0", FUNC(pit8253_device::write)); - map(0xfcc0, 0xfcc3).w("pit1", FUNC(pit8253_device::write)); -} - -void cit101_state::io_map(address_map &map) -{ - map(0x00, 0x01).rw("auxuart", FUNC(i8251_device::read), FUNC(i8251_device::write)); - map(0x20, 0x21).rw("comuart", FUNC(i8251_device::read), FUNC(i8251_device::write)); - map(0x40, 0x41).rw("kbduart", FUNC(i8251_device::read), FUNC(i8251_device::write)); - map(0x60, 0x63).rw("ppi", FUNC(i8255_device::read), FUNC(i8255_device::write)); - map(0xa0, 0xa0).w(FUNC(cit101_state::brightness_w)); - map(0xe0, 0xe0).rw(FUNC(cit101_state::e0_latch_r), FUNC(cit101_state::e0_latch_w)); -} - - -static INPUT_PORTS_START( cit101 ) -INPUT_PORTS_END - - -void cit101_state::cit101(machine_config &config) -{ - i8085a_cpu_device &maincpu(I8085A(config, "maincpu", 6.144_MHz_XTAL)); - maincpu.set_addrmap(AS_PROGRAM, &cit101_state::mem_map); - maincpu.set_addrmap(AS_IO, &cit101_state::io_map); - maincpu.in_sid_func().set_constant(0); // used to time NVR reads - maincpu.out_sod_func().set(FUNC(cit101_state::blink_w)); - - SCREEN(config, m_screen, SCREEN_TYPE_RASTER); - //m_screen->set_raw(14.976_MHz_XTAL, 960, 0, 800, 260, 0, 240); - m_screen->set_raw(22.464_MHz_XTAL, 1440, 0, 1188, 260, 0, 240); - m_screen->set_screen_update(FUNC(cit101_state::screen_update)); - m_screen->screen_vblank().set_inputline("maincpu", I8085_RST75_LINE); - - I8251(config, m_comuart, 6.144_MHz_XTAL / 2); - m_comuart->txd_handler().set("comm", FUNC(rs232_port_device::write_txd)); - m_comuart->dtr_handler().set("comm", FUNC(rs232_port_device::write_dtr)); - m_comuart->rts_handler().set("comm", FUNC(rs232_port_device::write_rts)); - m_comuart->rxrdy_handler().set("uartint", FUNC(input_merger_device::in_w<0>)); - m_comuart->txrdy_handler().set("uartint", FUNC(input_merger_device::in_w<2>)); - - rs232_port_device &comm(RS232_PORT(config, "comm", default_rs232_devices, nullptr)); - comm.rxd_handler().set("comuart", FUNC(i8251_device::write_rxd)); - comm.dsr_handler().set("comuart", FUNC(i8251_device::write_dsr)); - // CTS can be disabled in SET-UP Mode C - // DSR, CD, SI, RI are examined only during the modem test, not "always ignored" as the User's Manual claims - - i8251_device &auxuart(I8251(config, "auxuart", 6.144_MHz_XTAL / 2)); - auxuart.txd_handler().set("printer", FUNC(rs232_port_device::write_txd)); - auxuart.rxrdy_handler().set("uartint", FUNC(input_merger_device::in_w<1>)); - auxuart.txrdy_handler().set("uartint", FUNC(input_merger_device::in_w<3>)); - - rs232_port_device &printer(RS232_PORT(config, "printer", default_rs232_devices, nullptr)); - printer.rxd_handler().set("auxuart", FUNC(i8251_device::write_rxd)); - printer.cts_handler().set("auxuart", FUNC(i8251_device::write_cts)); - - INPUT_MERGER_ANY_HIGH(config, "uartint").output_handler().set_inputline("maincpu", I8085_RST55_LINE); - - I8251(config, m_kbduart, 6.144_MHz_XTAL / 2); - m_kbduart->txd_handler().set("keyboard", FUNC(cit101_hle_keyboard_device::write_rxd)); - m_kbduart->rxrdy_handler().set_inputline("maincpu", I8085_RST65_LINE); - - CIT101_HLE_KEYBOARD(config, "keyboard").txd_callback().set("kbduart", FUNC(i8251_device::write_rxd)); - - pit8253_device &pit0(PIT8253(config, "pit0", 0)); - pit0.set_clk<0>(6.144_MHz_XTAL / 4); - pit0.set_clk<1>(6.144_MHz_XTAL / 4); - //pit0.set_clk<2>(6.144_MHz_XTAL / 4); - pit0.out_handler<0>().set("auxuart", FUNC(i8251_device::write_txc)); - pit0.out_handler<1>().set("auxuart", FUNC(i8251_device::write_rxc)); - // OUT2 might be used for an internal expansion similar to the VT100 STP. - // The output appears to be fixed to a 307.2 kHz rate; turning this off boosts driver performance. - - pit8253_device &pit1(PIT8253(config, "pit1", 0)); - pit1.set_clk<0>(6.144_MHz_XTAL / 4); - pit1.set_clk<1>(6.144_MHz_XTAL / 4); - pit1.set_clk<2>(6.144_MHz_XTAL / 4); - pit1.out_handler<0>().set("comuart", FUNC(i8251_device::write_txc)); - pit1.out_handler<1>().set("comuart", FUNC(i8251_device::write_rxc)); - pit1.out_handler<2>().set("kbduart", FUNC(i8251_device::write_txc)); - pit1.out_handler<2>().append("kbduart", FUNC(i8251_device::write_rxc)); - - i8255_device &ppi(I8255A(config, "ppi", 0)); - ppi.out_pa_callback().set(FUNC(cit101_state::nvr_address_w)); - ppi.in_pb_callback().set(FUNC(cit101_state::nvr_data_r)); - ppi.out_pb_callback().set(FUNC(cit101_state::nvr_data_w)); - ppi.in_pc_callback().set("comm", FUNC(rs232_port_device::cts_r)).lshift(0); - ppi.in_pc_callback().append("comm", FUNC(rs232_port_device::dcd_r)).lshift(1); // tied to DSR for loopback test - ppi.in_pc_callback().append("comm", FUNC(rs232_port_device::ri_r)).lshift(2); // tied to CTS for loopback test - ppi.in_pc_callback().append("comm", FUNC(rs232_port_device::si_r)).lshift(3); // tied to CTS for loopback test - ppi.out_pc_callback().set(FUNC(cit101_state::nvr_control_w)); - - ER2055(config, m_nvr); -} - - -// PCB ID: HAV-2P005B / CIT-101 / C. ITOH -// CPU: NEC D8085AC -// RAM: 12x NEC D416C-2 (16 positions labeled 8116E, including 4 unpopulated ones) -// Peripherals: 3x M5L8251AP-5 (2M, 7J, 7K); 2x NEC D8253C-2 (7I, 7L); NEC D8255AC-2 (7N); GI ER-2055 (8P) -// Oscillators: 6.144 (XTAL1), 14.976 (XTAL2), 22.464 (XTAL3) -ROM_START( cit101 ) - ROM_REGION(0x4000, "maincpu", 0) - ROM_LOAD( "ic1_=3g04=_v10a.bin", 0x0000, 0x1000, CRC(5601fcac) SHA1(cad0d0335d133dd43993bc718ff72d12b8445cd1) ) // TMM2732D-45 - ROM_LOAD( "ic2_=3h04=_v10a.bin", 0x1000, 0x1000, CRC(23d263e0) SHA1(586e8185f9804987e0a4081724c060e74769d41d) ) // TMM2732D-45 - ROM_LOAD( "ic3_=3i04=_v10a.bin", 0x2000, 0x1000, CRC(15994b1d) SHA1(6d125db4ef5e1dd4d5a4d2f4d6f6bdf574e5bad8) ) // TMM2732D-45 - ROM_LOAD( "ic4_=3j04=_v10a.bin", 0x3000, 0x0800, CRC(d786995f) SHA1(943b521dcc7abc0662d6e136169b7db480ae1e5c) ) // MB8516 - ROM_RELOAD(0x3800, 0x0800) - - ROM_REGION(0x1000, "chargen", 0) - ROM_LOAD( "1h =5h 1 02= char rom.bin", 0x0000, 0x1000, CRC(ee0ff889) SHA1(a74ada19d19041b29e1b49aaf57ba7d9d54575e1) ) // TMM2332P - - ROM_REGION(0x180, "proms", 0) - ROM_LOAD( "2i_=3a00=.bin", 0x000, 0x100, NO_DUMP ) // position labeled (MB)7052 - ROM_LOAD( "2f_=6g00=.bin", 0x100, 0x020, NO_DUMP ) // position labeled TBP18S030 - ROM_LOAD( "2e_=7i00=.bin", 0x120, 0x020, NO_DUMP ) // position labeled TBP18S030 - ROM_LOAD( "5d_=4l00=.bin", 0x140, 0x020, NO_DUMP ) // position labeled TBP18S030 - ROM_LOAD( "5g_=7f00=.bin", 0x160, 0x020, NO_DUMP ) // position labeled TBP18S030 -ROM_END - -COMP( 1980, cit101, 0, 0, cit101, cit101, cit101_state, empty_init, "C. Itoh Electronics", "CIT-101", MACHINE_NOT_WORKING ) |