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https://github.com/holub/mame
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ssystem3: add svg screen (nw)
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@ -7514,7 +7514,7 @@ void mbdtower_state::update_display()
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else
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{
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// display items turned off
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m_display->matrix(0, 0);
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m_display->clear();
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}
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}
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@ -14,8 +14,8 @@ It was also redistributed by Acetronic as "Chess Traveller"(British spelling the
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and by Prinztronic as well, another British brand
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SciSys/Novag's "Chess Champion: Pocket Chess" is assumed to be the same game,
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with the exception that they added battery low voltage detection to it (rightmost
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digit DP lights up).
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it has the same MCU serial (SL90387). They added battery low voltage detection
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to it (rightmost digit DP lights up).
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******************************************************************************/
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@ -14,7 +14,7 @@ with support from David Levy.
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Hardware notes: (main unit)
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- Synertek 6502A @ 2MHz (4MHz XTAL)
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- Synertek 6522
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- Synertek 6522 VIA
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- 8KB ROM (2*Synertek 2332)
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- 1KB RAM (2*HM472114P-3)
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- MD4332BE + a bunch of TTL for the LCD
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@ -31,14 +31,13 @@ Chess Unit:
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Printer Unit:
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- unknown hardware, assume own CPU like the chess unit
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PSU ("permanent storage unit"?) is probably just a 256x4 battery-backed RAM
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PSU ("permanent storage unit"?) is just a battery-backed 256x4 RAM (TC5501P)
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module, not sure why it was so expensive (~180DM).
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A chess clock accessory was also announced but unreleased.
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SciSys Super System IV is on similar hardware.
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TODO:
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- WIP
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- 6522 ACR register is initialized with 0xe3. Meaning: PA and PB inputs are set
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to latch mode, but the program then never clocks the latch, it functions as if
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it meant to write 0xe0. Maybe 6522 CA1 pin emulation is wrong? Documentation
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@ -49,7 +48,11 @@ TODO:
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- 2nd 7474 /2 clock divider on each 4000-7fff access, this also applies to 6522 clock
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(doesn't affect chess calculation speed, only I/O access, eg. beeper pitch).
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Should be doable to add, but 6522 device doesn't support live clock changes.
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- add chessboard lcd and printer
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- LCD TC pin? connects to the display, source is a 50hz timer(from power supply),
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probably to keep refreshing the LCD when inactive, there is no need to emulate it
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- add chessboard lcd and printer unit
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- add memory unit
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- internal artwork
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******************************************************************************/
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@ -57,7 +60,6 @@ TODO:
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#include "cpu/m6502/m6502.h"
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#include "machine/6522via.h"
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#include "machine/nvram.h"
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#include "machine/clock.h"
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#include "sound/dac.h"
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#include "sound/volt_reg.h"
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#include "video/md4330b.h"
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@ -104,8 +106,7 @@ private:
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void main_map(address_map &map);
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// I/O handlers
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DECLARE_WRITE_LINE_MEMBER(update_lcd);
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DECLARE_WRITE32_MEMBER(lcd_q_w);
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DECLARE_WRITE32_MEMBER(lcd_q_w) { m_lcd_q = data; }
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DECLARE_WRITE8_MEMBER(input_w);
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DECLARE_READ8_MEMBER(input_r);
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DECLARE_WRITE8_MEMBER(control_w);
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@ -138,29 +139,6 @@ void ssystem3_state::machine_start()
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I/O
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******************************************************************************/
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// MD4332B LCD
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WRITE_LINE_MEMBER(ssystem3_state::update_lcd)
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{
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// update on falling edge
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if (!state)
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{
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// temporary
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output().set_value("digit0", m_lcd_q >> 0 & 0xff);
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output().set_value("digit1", m_lcd_q >> 8 & 0xff);
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output().set_value("digit2", m_lcd_q >> 16 & 0xff);
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output().set_value("digit3", m_lcd_q >> 24 & 0xff);
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}
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}
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WRITE32_MEMBER(ssystem3_state::lcd_q_w)
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{
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m_lcd_q = data;
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}
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// 6522 VIA
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WRITE8_MEMBER(ssystem3_state::input_w)
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{
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// PA0-PA7: input mux
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@ -198,7 +176,16 @@ WRITE8_MEMBER(ssystem3_state::control_w)
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// PB2 also clocks a 4015B
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// DA: LCD DO, DB: Q3A
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if (data & ~m_control & 4)
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{
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m_shift = m_shift << 1 | m_lcd->do_r();
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u64 out2 = m_shift | 0x100;
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// weird TTL maze, I assume it's a hw kludge to fix a bug after the maskroms were already manufactured
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if (BIT(m_shift, 3) & ~(BIT(m_shift, 1) ^ BIT(m_shift, 4)) & ~(BIT(m_lcd_q, 7) & BIT(m_lcd_q, 23)))
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out2 ^= 0x12;
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m_display->matrix(1, out2 << 32 | m_lcd_q);
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}
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// PB3: device serial out
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@ -254,12 +241,12 @@ static INPUT_PORTS_START( ssystem3 )
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PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_1) PORT_CODE(KEYCODE_1_PAD) PORT_CODE(KEYCODE_A) PORT_NAME("A 1 / White")
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PORT_START("IN.3")
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PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_T) PORT_NAME("Time") // not a toggle switch
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PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_T) PORT_TOGGLE PORT_NAME("Time")
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PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_8) PORT_CODE(KEYCODE_8_PAD) PORT_CODE(KEYCODE_H) PORT_NAME("H 8 / Black")
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PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_3) PORT_CODE(KEYCODE_3_PAD) PORT_CODE(KEYCODE_C) PORT_NAME("C 3 / Queen / #50")
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PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_2) PORT_CODE(KEYCODE_2_PAD) PORT_CODE(KEYCODE_B) PORT_NAME("B 2 / King / FP")
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PORT_START("IN.4")
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PORT_START("IN.4") // switches
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PORT_CONFNAME( 0x01, 0x01, "Sound" )
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PORT_CONFSETTING( 0x00, DEF_STR( Off ) )
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PORT_CONFSETTING( 0x01, DEF_STR( On ) )
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@ -289,11 +276,13 @@ void ssystem3_state::ssystem3(machine_config &config)
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MD4332B(config, m_lcd);
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m_lcd->write_q().set(FUNC(ssystem3_state::lcd_q_w));
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clock_device &tc_clock(CLOCK(config, "tc_clock", 50)); // from power supply
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tc_clock.signal_handler().set(m_lcd, FUNC(md4332b_device::tc_w));
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tc_clock.signal_handler().append(FUNC(ssystem3_state::update_lcd));
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screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_SVG));
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screen.set_refresh_hz(60);
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screen.set_size(1920, 729);
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screen.set_visarea_full();
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PWM_DISPLAY(config, m_display).set_size(4, 4);
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PWM_DISPLAY(config, m_display).set_size(1, 32+8+1);
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m_display->set_bri_levels(0.25);
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//config.set_default_layout(layout_saitek_ssystem3);
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/* sound hardware */
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@ -315,6 +304,9 @@ ROM_START( ssystem3 )
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// HACK! 6522 ACR register setup
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ROM_FILL(0x946d, 1, 0xe0) // was 0xe3
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ROM_REGION( 53511, "screen", 0)
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ROM_LOAD( "ssystem3.svg", 0, 53511, CRC(a2820cc8) SHA1(2e922bb2d4a244931c1e7dafa84910dee5ab2623) )
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ROM_END
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} // anonymous namespace
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@ -218,7 +218,7 @@ void saitek_stratos_state::power_off()
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m_maincpu->set_input_line(INPUT_LINE_RESET, ASSERT_LINE);
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// clear display
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m_display->matrix(0, 0);
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m_display->clear();
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clear_lcd();
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update_lcd();
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}
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