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Diffstat (limited to 'src/mame/drivers/wy50.cpp')
-rw-r--r-- | src/mame/drivers/wy50.cpp | 342 |
1 files changed, 0 insertions, 342 deletions
diff --git a/src/mame/drivers/wy50.cpp b/src/mame/drivers/wy50.cpp deleted file mode 100644 index 54be4930a00..00000000000 --- a/src/mame/drivers/wy50.cpp +++ /dev/null @@ -1,342 +0,0 @@ -// 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) |