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dct11em: added devices and digital display
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Robbbert
parent
7c80f66cec
commit
4266388e8e
@ -1,17 +1,28 @@
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// license:BSD-3-Clause
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// copyright-holders:Miodrag Milanovic
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// copyright-holders:Miodrag Milanovic,Robbbert
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/***************************************************************************
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DEC DCT11-EM
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DEC DCT11-EM (Evaluation Module)
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03/12/2010 Skeleton driver.
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2010-12-03 Skeleton driver.
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TODO:
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- user LED
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- keyboard (not in manual so have to guess)
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- HALT and INT buttons (to HALT and PF input lines)
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- DLART device to be emulated
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- hookups between DLART, UART and remaining interrupts
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- rs232 terminal
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****************************************************************************/
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#include "emu.h"
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#include "cpu/t11/t11.h"
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#include "emupal.h"
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#include "screen.h"
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#include "machine/i8251.h"
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#include "machine/i8255.h"
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#include "machine/clock.h"
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#include "dct11em.lh"
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class dct11em_state : public driver_device
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@ -20,77 +31,167 @@ public:
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dct11em_state(const machine_config &mconfig, device_type type, const char *tag)
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: driver_device(mconfig, type, tag)
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, m_maincpu(*this, "maincpu")
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, m_ppi(*this, "ppi")
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, m_uart(*this, "uart")
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, m_digits(*this, "digit%d", 0U)
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{ }
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void dct11em(machine_config &config);
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private:
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virtual void machine_reset() override;
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virtual void video_start() override;
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void machine_reset() override;
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void machine_start() override;
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void dct11em_mem(address_map &map);
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void porta_w(u8);
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void portc_w(u8);
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u8 portc_r();
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void irq_encoder(u8, bool);
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uint32_t screen_update_dct11em(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
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u8 m_seg_lower;
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u8 m_seg_upper;
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u8 m_portc;
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u16 m_irqs;
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void mem_map(address_map &map);
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required_device<t11_device> m_maincpu;
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required_device<i8255_device> m_ppi;
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required_device<i8251_device> m_uart;
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output_finder<12> m_digits;
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};
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void dct11em_state::dct11em_mem(address_map &map)
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void dct11em_state::mem_map(address_map &map)
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{
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map.unmap_value_high();
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map(0x0000, 0x0fff).ram(); // RAM
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map(0x2000, 0x2fff).ram(); // Optional RAM
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map(0xa000, 0xdfff).rom(); // RAM
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map(0x0000, 0x0fff).ram(); // 2x 6116
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map(0x1000, 0x1fff).noprw(); // the ram test reads/writes here even though there's no ram
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map(0x2000, 0x2fff).ram(); // expansion sockets, 2x 6116
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map(0xa000, 0xdfff).rom();
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map(0xff20, 0xff27).lw8(NAME([this] (offs_t offset, u8 data) { m_ppi->write(offset>>1, data); }));
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map(0xff28, 0xff2b).lw8(NAME([this] (offs_t offset, u8 data) { m_uart->write(offset>>1, data); }));
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map(0xff60, 0xff67).lr8(NAME([this] (offs_t offset) { return m_ppi->read(offset>>1); }));
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map(0xff68, 0xff6b).lr8(NAME([this] (offs_t offset) { return m_uart->read(offset>>1); }));
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//map(0xff70, 0xff7f). // DC309 DLART unemulated device - uart to terminal
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}
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void dct11em_state::porta_w(u8 data)
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{
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m_seg_lower = data;
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if (BIT(m_portc, 3))
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m_seg_upper = data;
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}
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void dct11em_state::portc_w(u8 data)
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{
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data &= 15;
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m_portc = data;
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if (BIT(data, 3))
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{
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m_seg_upper = m_seg_lower;
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irq_encoder(10, 0);
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}
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if (data < 6)
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{
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m_digits[data] = m_seg_lower;
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m_digits[data+6] = m_seg_upper;
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}
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if (data == 10)
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output().set_value("led0", 0);
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else
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if (data == 11)
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output().set_value("led0", 1);
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}
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u8 dct11em_state::portc_r()
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{
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return 0;
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}
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/*
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* interrupts (p. 101)
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*
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* IRQ CPx Pri Vec Device
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* --- --- --- --- ------
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* 15 LLLL 7 140 DLART receiver break
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* 11 LHLL 6 100 External interrupt
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* 10 LHLH 6 104 Keypad/LED scanning
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* 7 HLLL 5 120 8251 receiver
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* 6 HLLH 5 124 8251 transmitter
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* 3 HHLL 4 060 DLART receiver
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* 2 HHLH 4 064 DLART transmitter */
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void dct11em_state::irq_encoder(u8 irq, bool state)
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{
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if (state)
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m_irqs |= (1 << irq);
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else
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m_irqs &= ~(1 << irq);
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int i;
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for (i = 15; i > 0; i--)
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if (BIT(m_irqs, i))
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break;
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m_maincpu->set_input_line(t11_device::CP3_LINE, BIT(i, 3) ? ASSERT_LINE : CLEAR_LINE);
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m_maincpu->set_input_line(t11_device::CP2_LINE, BIT(i, 2) ? ASSERT_LINE : CLEAR_LINE);
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m_maincpu->set_input_line(t11_device::CP1_LINE, BIT(i, 1) ? ASSERT_LINE : CLEAR_LINE);
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m_maincpu->set_input_line(t11_device::CP0_LINE, BIT(i, 0) ? ASSERT_LINE : CLEAR_LINE);
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}
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void dct11em_state::machine_reset()
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{
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m_irqs = 0;
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}
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void dct11em_state::machine_start()
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{
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m_digits.resolve();
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save_item(NAME(m_seg_lower));
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save_item(NAME(m_seg_upper));
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save_item(NAME(m_portc));
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save_item(NAME(m_irqs));
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}
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/* Input ports */
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static INPUT_PORTS_START( dct11em )
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INPUT_PORTS_END
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void dct11em_state::machine_reset()
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{
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}
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void dct11em_state::video_start()
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{
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}
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uint32_t dct11em_state::screen_update_dct11em(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
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{
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return 0;
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}
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void dct11em_state::dct11em(machine_config &config)
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{
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/* basic machine hardware */
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T11(config, m_maincpu, 7500000); // 7.5MHz XTAL
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T11(config, m_maincpu, 7'500'000); // 7.5MHz XTAL
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m_maincpu->set_initial_mode(0x1403); /* according to specs */
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m_maincpu->set_addrmap(AS_PROGRAM, &dct11em_state::dct11em_mem);
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m_maincpu->set_addrmap(AS_PROGRAM, &dct11em_state::mem_map);
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/* video hardware */
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screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
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screen.set_refresh_hz(50);
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screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500)); /* not accurate */
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screen.set_size(640, 480);
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screen.set_visarea(0, 640-1, 0, 480-1);
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screen.set_screen_update(FUNC(dct11em_state::screen_update_dct11em));
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screen.set_palette("palette");
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config.set_default_layout(layout_dct11em);
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PALETTE(config, "palette", palette_device::MONOCHROME);
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I8255(config, m_ppi);
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m_ppi->out_pa_callback().set(FUNC(dct11em_state::porta_w)); // segments
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// port B - expansion interface
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m_ppi->in_pc_callback().set(FUNC(dct11em_state::portc_r)); // keyboard
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m_ppi->out_pc_callback().set(FUNC(dct11em_state::portc_w)); // various
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I8251(config, m_uart, 2'457'600 / 8);
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// txc and rxc come from DLART pin 34
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clock_device &inta_clock(CLOCK(config, "inta_clock", 614'400 / 768)); // 800Hz, from DLART pin 25
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inta_clock.signal_handler().set([this] (bool state) { if (state) irq_encoder(10, 1); });
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//clock_device &dlart_clock(CLOCK(config, "dlart_clock", 7'500'000 / 4)); --> to DLART CLK pin 32
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//clock_device &uart_clock(CLOCK(config, "uart_clock", 2'457'600 / 8)); --> to UART CLK
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}
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/* ROM definition */
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ROM_START( dct11em )
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ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
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// Highest address line inverted
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ROM_LOAD16_BYTE( "23-213e4.bin", 0x8000, 0x2000, CRC(bdd82f39) SHA1(347deeff77596b67eee27a39a9c40075fcf5c10d))
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ROM_LOAD16_BYTE( "23-214e4.bin", 0x8001, 0x2000, CRC(b523dae8) SHA1(cd1a64a2bce9730f7a9177d391663919c7f56073))
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ROM_LOAD16_BYTE( "23-213e4.e53", 0x8000, 0x2000, CRC(bdd82f39) SHA1(347deeff77596b67eee27a39a9c40075fcf5c10d))
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ROM_LOAD16_BYTE( "23-214e4.e45", 0x8001, 0x2000, CRC(b523dae8) SHA1(cd1a64a2bce9730f7a9177d391663919c7f56073))
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ROM_COPY("maincpu", 0x8000, 0xc000, 0x2000)
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ROM_END
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/* Driver */
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/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
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COMP( 1983, dct11em, 0, 0, dct11em, dct11em, dct11em_state, empty_init, "Digital Equipment Corporation", "DCT11-EM", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)
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COMP( 1983, dct11em, 0, 0, dct11em, dct11em, dct11em_state, empty_init, "Digital Equipment Corporation", "DCT11-EM", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW | MACHINE_SUPPORTS_SAVE )
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60
src/mame/layout/dct11em.lay
Normal file
60
src/mame/layout/dct11em.lay
Normal file
@ -0,0 +1,60 @@
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<?xml version="1.0"?>
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<!--
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license:CC0
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-->
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<mamelayout version="2">
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<element name="digit" defstate="0">
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<led7seg>
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<color red="0.75" green="0.0" blue="0.0" />
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</led7seg>
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</element>
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<element name="background">
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<rect>
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<bounds left="0" top="0" right="1" bottom="1" />
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<color red="0.0" green="0.0" blue="0.0" />
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</rect>
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</element>
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<view name="Default Layout">
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<!-- Black background -->
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<bezel element="background">
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<bounds left="97" top="0" right="405" bottom="195" />
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</bezel>
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<bezel name="digit11" element="digit">
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<bounds left="107" top="10" right="155" bottom="90" />
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</bezel>
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<bezel name="digit10" element="digit">
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<bounds left="155" top="10" right="203" bottom="90" />
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</bezel>
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<bezel name="digit9" element="digit">
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<bounds left="203" top="10" right="251" bottom="90" />
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</bezel>
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<bezel name="digit8" element="digit">
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<bounds left="251" top="10" right="299" bottom="90" />
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</bezel>
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<bezel name="digit7" element="digit">
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<bounds left="299" top="10" right="347" bottom="90" />
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</bezel>
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<bezel name="digit6" element="digit">
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<bounds left="347" top="10" right="395" bottom="90" />
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</bezel>
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<bezel name="digit5" element="digit">
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<bounds left="107" top="105" right="155" bottom="185" />
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</bezel>
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<bezel name="digit4" element="digit">
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<bounds left="155" top="105" right="203" bottom="185" />
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</bezel>
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<bezel name="digit3" element="digit">
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<bounds left="203" top="105" right="251" bottom="185" />
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</bezel>
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<bezel name="digit2" element="digit">
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<bounds left="251" top="105" right="299" bottom="185" />
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</bezel>
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<bezel name="digit1" element="digit">
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<bounds left="299" top="105" right="347" bottom="185" />
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</bezel>
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<bezel name="digit0" element="digit">
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<bounds left="347" top="105" right="395" bottom="185" />
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</bezel>
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</view>
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</mamelayout>
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