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diff --git a/src/mame/drivers/wy50.cpp b/src/mame/drivers/wy50.cpp
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-// license:BSD-3-Clause
-// copyright-holders:AJR
-/*******************************************************************************
-
- Preliminary driver for Wyse WY-50 and similar display terminals.
-
- Wyse Technology introduced the WY-50 green screen terminal in the fall of
- 1983. It was soon followed by the WY-75 ANSI X3.64-compatible terminal and
- the WY-350 64-color terminal. This generation of terminals quickly replaced
- the earlier WY-100, WY-200 and WY-300.
-
- The available WY-50 schematics document several revisions of the logic
- board, apparently all functionally equivalent. The earlier version encodes
- character attributes through a slew of TTL gates. A later version
- integrates this logic with a L1A0219 custom gate array (80-435-00), which
- also takes over the address decoding. Both currently dumped sets use this
- second hardware revision (with some minor difference as to the position of
- the beeper). The 80-435-11 gate array from a still later revision also
- generates the dot clock.
-
- Video memory is contained in two TMS4016-equivalent static RAMs (confirmed
- types include MSM2128-15RS and HM6116P-3). A third 4016-like RAM (usually
- SY2158A-2) is used for the row buffer, with A8-A10 tied to GND.
-
-*******************************************************************************/
-
-#include "emu.h"
-#include "bus/rs232/rs232.h"
-#include "cpu/mcs51/mcs51.h"
-#include "machine/er1400.h"
-#include "machine/mc2661.h"
-#include "machine/wy50kb.h"
-#include "video/scn2674.h"
-#include "screen.h"
-
-class wy50_state : public driver_device
-{
-public:
- wy50_state(const machine_config &mconfig, device_type type, const char *tag)
- : driver_device(mconfig, type, tag)
- , m_maincpu(*this, "maincpu")
- , m_keyboard(*this, "keyboard")
- , m_earom(*this, "earom")
- , m_pvtc(*this, "pvtc")
- , m_sio(*this, "sio")
- , m_chargen(*this, "chargen")
- , m_videoram(*this, "videoram%u", 0U)
- {
- }
-
- void wy50(machine_config &config);
-
-protected:
- virtual void machine_start() override;
- virtual void machine_reset() override;
-
-private:
- u8 pvtc_videoram_r(offs_t offset);
- SCN2672_DRAW_CHARACTER_MEMBER(draw_character);
- DECLARE_WRITE_LINE_MEMBER(mbc_attr_clock_w);
-
- u8 pvtc_r(offs_t offset);
- void pvtc_w(offs_t offset, u8 data);
- u8 sio_r(offs_t offset);
- void sio_w(offs_t offset, u8 data);
- u8 rbreg_r();
- void keyboard_w(u8 data);
- void earom_w(u8 data);
- u8 p1_r();
- void p1_w(u8 data);
-
- void prg_map(address_map &map);
- void io_map(address_map &map);
- void row_buffer_map(address_map &map);
-
- required_device<mcs51_cpu_device> m_maincpu;
- required_device<wy50_keyboard_device> m_keyboard;
- required_device<er1400_device> m_earom;
- required_device<scn2672_device> m_pvtc;
- required_device<mc2661_device> m_sio;
-
- required_region_ptr<u8> m_chargen;
- required_shared_ptr_array<u8, 2> m_videoram;
-
- u8 m_cur_attr;
- u8 m_last_row_attr;
- u8 m_row_buffer_char;
- bool m_font2;
- bool m_rev_prot;
- bool m_is_132;
-};
-
-void wy50_state::machine_start()
-{
- m_cur_attr = 0;
- m_last_row_attr = 0;
- m_row_buffer_char = 0;
- m_font2 = false;
- m_rev_prot = false;
- m_is_132 = false;
-
- save_item(NAME(m_cur_attr));
- save_item(NAME(m_last_row_attr));
- save_item(NAME(m_row_buffer_char));
- save_item(NAME(m_font2));
- save_item(NAME(m_rev_prot));
- save_item(NAME(m_is_132));
-}
-
-void wy50_state::machine_reset()
-{
- keyboard_w(0);
- earom_w(0);
-}
-
-u8 wy50_state::pvtc_videoram_r(offs_t offset)
-{
- m_row_buffer_char = m_videoram[BIT(offset, 13)][offset & 0x07ff];
- return m_row_buffer_char;
-}
-
-SCN2672_DRAW_CHARACTER_MEMBER(wy50_state::draw_character)
-{
- // Attribute bit 0 = Dim
- // Attribute bit 1 = Blink
- // Attribute bit 2 = Blank
- // Attribute bit 3 = Underline
- // Attribute bit 4 = Reverse video
-
- const bool attr = (charcode & 0xe0) == 0x80;
- const bool prot = (charcode & 0xe0) > 0x80 && !m_font2;
- if (attr)
- m_cur_attr = charcode & 0x1f;
- else if (x == 0)
- m_cur_attr = m_last_row_attr;
-
- u16 dots = 0;
- if (!attr)
- {
- // Blinking suppresses underline but blank attribute doesn't
- if (!BIT(m_cur_attr, 1) || !blink)
- {
- // Shift register load inhibited by blanking conditions or underline
- if (BIT(m_cur_attr, 3) && ul)
- dots = 0x3ff;
- else if (!BIT(m_cur_attr, 2))
- dots = m_chargen[(charcode & (m_font2 ? 0xff : 0x7f)) << 4 | linecount] << 2;
- }
-
- // Reverse video for non-attribute characters (XOR of two conditions)
- if (BIT(m_cur_attr, 4) != (prot && m_rev_prot))
- dots = ~dots;
- }
- if (cursor)
- dots = ~dots;
-
- // Apply dimming conditions
- const rgb_t fg = BIT(m_cur_attr, 0) || (prot && !m_rev_prot) ? rgb_t(0xc0, 0xc0, 0xc0) : rgb_t::white();
- for (int i = 0; i < 9; i++)
- {
- bitmap.pix32(y, x++) = BIT(dots, 9) ? fg : rgb_t::black();
- dots <<= 1;
- }
- if (!m_is_132)
- bitmap.pix32(y, x++) = BIT(dots, 9) ? fg : rgb_t::black();
-}
-
-WRITE_LINE_MEMBER(wy50_state::mbc_attr_clock_w)
-{
- if (state)
- m_last_row_attr = m_cur_attr;
-}
-
-u8 wy50_state::pvtc_r(offs_t offset)
-{
- return m_pvtc->read(offset >> 8);
-}
-
-void wy50_state::pvtc_w(offs_t offset, u8 data)
-{
- m_pvtc->write(offset >> 8, data);
-}
-
-u8 wy50_state::sio_r(offs_t offset)
-{
- return m_sio->read(offset >> 8);
-}
-
-void wy50_state::sio_w(offs_t offset, u8 data)
-{
- m_sio->write(offset >> 8, data);
-}
-
-u8 wy50_state::rbreg_r()
-{
- // LS374 row buffer diagnostic register
- return m_row_buffer_char;
-}
-
-void wy50_state::keyboard_w(u8 data)
-{
- // Bit 0 = J3-6
- // Bit 1 = J3-5
- // Bit 2 = J3-4
- // Bit 3 = J3-7
- // Bit 4 = J3-10
- // Bit 5 = J3-9
- // Bit 6 = J3-8
- // Bit 7 = /HSYNC CLAMP
- m_keyboard->scan_w(data & 0x7f);
-}
-
-void wy50_state::earom_w(u8 data)
-{
- // Bit 0 = EAROM D
- // Bit 1 = EAROM CLK
- // Bit 2 = EAROM C3
- // Bit 3 = EAROM C2
- // Bit 4 = EAROM C1
- // Bit 5 = UPCHAR/NORM
- m_earom->clock_w(BIT(data, 1));
- m_earom->c3_w(BIT(data, 2));
- m_earom->c2_w(BIT(data, 3));
- m_earom->c1_w(BIT(data, 4));
- m_earom->data_w(BIT(data, 3) ? BIT(data, 0) : 0);
- m_font2 = BIT(data, 5);
-}
-
-u8 wy50_state::p1_r()
-{
- // P1.0 = AUX RDY
- // P1.1 = NVD OUT
- // P1.4 = KEY (inverted, active high)
- return 0xed | (m_earom->data_r() << 1) | (m_keyboard->sense_r() ? 0x00 : 0x10);
-}
-
-void wy50_state::p1_w(u8 data)
-{
- // P1.2 = EXFONT
- // P1.3 = AUX RTS
- // P1.5 = BEEPER
- // P1.6 = REV/DIM PROT
- // P1.7 (inverted) = 80/132
-
- m_rev_prot = BIT(data, 6);
-
- if (m_is_132 != BIT(data, 7))
- {
- m_is_132 = BIT(data, 7);
- m_pvtc->set_character_width(m_is_132 ? 9 : 10);
- m_pvtc->set_unscaled_clock(68.85_MHz_XTAL / (m_is_132 ? 18 : 30));
- }
-}
-
-void wy50_state::prg_map(address_map &map)
-{
- map(0x0000, 0x1fff).rom().region("maincpu", 0);
-}
-
-void wy50_state::io_map(address_map &map)
-{
- map(0x0000, 0x07ff).mirror(0x1800).ram().share("videoram0");
- map(0x2000, 0x27ff).mirror(0x1800).ram().share("videoram1");
- map(0x4000, 0x47ff).mirror(0x1800).rw(FUNC(wy50_state::pvtc_r), FUNC(wy50_state::pvtc_w));
- map(0x6000, 0x63ff).mirror(0x0c00).r(FUNC(wy50_state::sio_r));
- map(0x7000, 0x73ff).mirror(0x0c00).w(FUNC(wy50_state::sio_w));
- map(0x8000, 0x8000).mirror(0x1fff).r(FUNC(wy50_state::rbreg_r));
- map(0xa000, 0xa000).mirror(0x1fff).w(FUNC(wy50_state::keyboard_w));
- map(0xc000, 0xc000).mirror(0x1fff).w(FUNC(wy50_state::earom_w));
-}
-
-void wy50_state::row_buffer_map(address_map &map)
-{
- map.global_mask(0x0ff);
- map(0x000, 0x0ff).ram();
-}
-
-static INPUT_PORTS_START(wy50)
-INPUT_PORTS_END
-
-void wy50_state::wy50(machine_config &config)
-{
- I8031(config, m_maincpu, 11_MHz_XTAL); // SAB8031P or SCN8031A
- m_maincpu->set_addrmap(AS_PROGRAM, &wy50_state::prg_map);
- m_maincpu->set_addrmap(AS_IO, &wy50_state::io_map);
- m_maincpu->port_in_cb<1>().set(FUNC(wy50_state::p1_r));
- m_maincpu->port_out_cb<1>().set(FUNC(wy50_state::p1_w));
-
- WY50_KEYBOARD(config, m_keyboard);
-
- ER1400(config, m_earom);
-
- screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
- screen.set_color(rgb_t::green());
- screen.set_raw(68.85_MHz_XTAL / 3, 102 * 10, 0, 80 * 10, 375, 0, 338);
- //screen.set_raw(68.85_MHz_XTAL / 2, 170 * 9, 0, 132 * 9, 375, 0, 338);
- screen.set_screen_update("pvtc", FUNC(scn2672_device::screen_update));
-
- SCN2672(config, m_pvtc, 68.85_MHz_XTAL / 30); // SCN2672A or SCN2672B
- m_pvtc->set_screen("screen");
- m_pvtc->set_character_width(10); // 9 in 132-column mode
- m_pvtc->set_addrmap(0, &wy50_state::row_buffer_map);
- m_pvtc->set_display_callback(FUNC(wy50_state::draw_character));
- m_pvtc->intr_callback().set_inputline(m_maincpu, MCS51_T0_LINE);
- m_pvtc->breq_callback().set_inputline(m_maincpu, MCS51_INT0_LINE);
- m_pvtc->mbc_callback().set(FUNC(wy50_state::mbc_attr_clock_w));
- m_pvtc->mbc_char_callback().set(FUNC(wy50_state::pvtc_videoram_r));
-
- MC2661(config, m_sio, 4.9152_MHz_XTAL); // SCN2661B
- m_sio->rxrdy_handler().set_inputline(m_maincpu, MCS51_INT1_LINE);
- m_sio->txd_handler().set("modem", FUNC(rs232_port_device::write_txd));
- m_sio->dtr_handler().set("modem", FUNC(rs232_port_device::write_dtr));
- m_sio->rts_handler().set("modem", FUNC(rs232_port_device::write_rts));
-
- rs232_port_device &modem(RS232_PORT(config, "modem", default_rs232_devices, "loopback"));
- modem.rxd_handler().set(m_sio, FUNC(mc2661_device::rx_w));
- modem.cts_handler().set(m_sio, FUNC(mc2661_device::cts_w));
- modem.dcd_handler().set(m_sio, FUNC(mc2661_device::dcd_w));
-}
-
-ROM_START(wy50)
- ROM_REGION(0x2000, "maincpu", 0)
- ROM_LOAD("2301_e.u6", 0x0000, 0x2000, CRC(2a62ea25) SHA1(f69c596aab307ef1872df29d353b5a61ff77bb74)) // iFD2764-3
-
- ROM_REGION(0x1000, "chargen", 0)
- ROM_LOAD("2201_b.u16", 0x0000, 0x1000, CRC(ee318814) SHA1(0ac64b60ff978e607a087e9e6f4d547811c015c5)) // 2716
-ROM_END
-
-ROM_START(wy75) // 8031, green, 101-key detached keyboard
- ROM_REGION(0x2000, "maincpu", 0)
- ROM_LOAD("wy75_4001r.bin", 0x0000, 0x2000, CRC(d1e660e0) SHA1(81960e7780b86b9fe338b20d7bd50f7e991020a4))
-
- ROM_REGION(0x1000, "chargen", 0)
- ROM_LOAD("wy75_4101a.bin", 0x0000, 0x1000, CRC(96d377db) SHA1(9e059cf067d84267f4e1d92b0509f137fb2ceb19))
-
- ROM_REGION16_LE(0xc8, "earom", 0)
- ROM_LOAD("default.bin", 0x00, 0xc8, CRC(0efeff07) SHA1(304e07ef87a4b107700273321a1d4e34a56d6821))
-ROM_END
-
-COMP(1984, wy50, 0, 0, wy50, wy50, wy50_state, empty_init, "Wyse Technology", "WY-50 (Rev. E)", MACHINE_IS_SKELETON)
-COMP(1984, wy75, 0, 0, wy50, wy50, wy50_state, empty_init, "Wyse Technology", "WY-75 (Rev. H)", MACHINE_IS_SKELETON)
-//COMP(1984, wy350, 0, 0, wy50, wy50, wy50_state, empty_init, "Wyse Technology", "WY-350", MACHINE_IS_SKELETON)