// license:BSD-3-Clause // copyright-holders:Carl #include "emu.h" #include "cpu/i86/i86.h" #include "cpu/mcs48/mcs48.h" #include "imagedev/floppy.h" #include "machine/i8087.h" #include "machine/i8251.h" #include "machine/input_merger.h" #include "machine/pit8253.h" #include "machine/pic8259.h" #include "machine/upd765.h" #include "machine/msm58321.h" #include "machine/6840ptm.h" #include "machine/z80sio.h" #include "machine/pit8253.h" #include "machine/am9517a.h" #include "video/mc6845.h" #include "emupal.h" #include "screen.h" #include "bus/rs232/rs232.h" #include "bus/rs232/keyboard.h" class duet16_state : public driver_device { public: duet16_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), m_maincpu(*this, "maincpu"), m_pic(*this, "pic"), m_fdc(*this, "fdc"), m_dmac(*this, "dmac"), m_fd(*this, "fdc:%u", 0), m_pal(*this, "palette"), m_chrpal(*this, "chrpal"), m_rtc(*this, "rtc"), m_tmint(*this, "tmint"), m_screen(*this, "screen"), m_chrrom(*this, "char"), m_cvram(*this, "cvram"), m_gvram(*this, "gvram") { } void duet16(machine_config &config); protected: void machine_reset() override; private: DECLARE_READ8_MEMBER(pic_r); DECLARE_WRITE8_MEMBER(pic_w); DECLARE_READ8_MEMBER(dma_mem_r); DECLARE_WRITE8_MEMBER(dma_mem_w); DECLARE_READ8_MEMBER(dmapg_r); DECLARE_WRITE8_MEMBER(dmapg_w); DECLARE_WRITE8_MEMBER(fdcctrl_w); DECLARE_WRITE8_MEMBER(dispctrl_w); DECLARE_WRITE8_MEMBER(pal_w); DECLARE_WRITE_LINE_MEMBER(hrq_w); DECLARE_READ8_MEMBER(rtc_r); DECLARE_WRITE8_MEMBER(rtc_w); DECLARE_READ8_MEMBER(rtc_stat_r); DECLARE_WRITE8_MEMBER(rtc_addr_w); DECLARE_READ16_MEMBER(sysstat_r); DECLARE_WRITE_LINE_MEMBER(rtc_d0_w); DECLARE_WRITE_LINE_MEMBER(rtc_d1_w); DECLARE_WRITE_LINE_MEMBER(rtc_d2_w); DECLARE_WRITE_LINE_MEMBER(rtc_d3_w); DECLARE_WRITE_LINE_MEMBER(rtc_busy_w); void rtc_irq_reset(); MC6845_UPDATE_ROW(crtc_update_row); void duet16_io(address_map &map); void duet16_mem(address_map &map); required_device m_maincpu; required_device m_pic; required_device m_fdc; required_device m_dmac; required_device_array m_fd; required_device m_pal; required_device m_chrpal; required_device m_rtc; required_device m_tmint; required_device m_screen; required_memory_region m_chrrom; required_shared_ptr m_cvram; required_shared_ptr m_gvram; u8 m_dmapg, m_dispctrl; u8 m_rtc_d; bool m_rtc_busy, m_rtc_irq; }; void duet16_state::machine_reset() { m_rtc->cs1_w(ASSERT_LINE); rtc_irq_reset(); } READ8_MEMBER(duet16_state::pic_r) { return m_pic->read(offset ^ 1); } WRITE8_MEMBER(duet16_state::pic_w) { m_pic->write(offset ^ 1, data); } WRITE8_MEMBER(duet16_state::fdcctrl_w) { floppy_image_device *f = m_fd[BIT(data, 2) ? 1 : 0]->get_device(); m_fdc->set_floppy(f); m_fd[0]->get_device()->mon_w(!BIT(data, 0)); m_fd[1]->get_device()->mon_w(!BIT(data, 0)); if(!BIT(data, 1)) m_fdc->soft_reset(); // TODO: bit 3 = LSPD } READ8_MEMBER(duet16_state::dma_mem_r) { return m_maincpu->space(AS_PROGRAM).read_byte((m_dmapg << 16) | offset); } WRITE8_MEMBER(duet16_state::dma_mem_w) { m_maincpu->space(AS_PROGRAM).write_byte((m_dmapg << 16) | offset, data); } READ8_MEMBER(duet16_state::dmapg_r) { return m_dmapg; } WRITE8_MEMBER(duet16_state::dmapg_w) { m_dmapg = data & 0xf; } WRITE_LINE_MEMBER(duet16_state::hrq_w) { m_maincpu->set_input_line(INPUT_LINE_HALT, state); m_dmac->hack_w(state); } READ16_MEMBER(duet16_state::sysstat_r) { return 0xb484; } void duet16_state::duet16_mem(address_map &map) { map(0x00000, 0x8ffff).ram(); map(0xa8000, 0xbffff).ram().share("gvram"); map(0xc0000, 0xc0fff).ram().share("cvram"); map(0xf8000, 0xf801f).rw(FUNC(duet16_state::dmapg_r), FUNC(duet16_state::dmapg_w)).umask16(0x00ff); map(0xf8000, 0xf801f).rw("dmac", FUNC(am9517a_device::read), FUNC(am9517a_device::write)).umask16(0xff00); map(0xf8020, 0xf8023).rw(FUNC(duet16_state::pic_r), FUNC(duet16_state::pic_w)).umask16(0x00ff); map(0xf8040, 0xf804f).rw("itm", FUNC(ptm6840_device::read), FUNC(ptm6840_device::write)).umask16(0x00ff); map(0xf8060, 0xf8067).rw("bgpit", FUNC(pit8253_device::read), FUNC(pit8253_device::write)).umask16(0x00ff); map(0xf8080, 0xf8087).rw("sio", FUNC(upd7201_new_device::ba_cd_r), FUNC(upd7201_new_device::ba_cd_w)).umask16(0x00ff); map(0xf80a0, 0xf80a3).rw("kbusart", FUNC(i8251_device::read), FUNC(i8251_device::write)).umask16(0x00ff); map(0xf80c0, 0xf80c0).rw("crtc", FUNC(hd6845s_device::status_r), FUNC(hd6845s_device::address_w)); map(0xf80c2, 0xf80c2).rw("crtc", FUNC(hd6845s_device::register_r), FUNC(hd6845s_device::register_w)); map(0xf80e0, 0xf80e3).rw("i8741", FUNC(upi41_cpu_device::upi41_master_r), FUNC(upi41_cpu_device::upi41_master_w)).umask16(0x00ff); map(0xf8100, 0xf8103).m(m_fdc, FUNC(upd765a_device::map)).umask16(0x00ff); map(0xf8120, 0xf8120).rw(FUNC(duet16_state::rtc_r), FUNC(duet16_state::rtc_w)); map(0xf8160, 0xf819f).w(FUNC(duet16_state::pal_w)); map(0xf8200, 0xf8201).r(FUNC(duet16_state::sysstat_r)); map(0xf8220, 0xf8220).w(FUNC(duet16_state::fdcctrl_w)); map(0xf8260, 0xf8260).w(FUNC(duet16_state::rtc_addr_w)); map(0xf8280, 0xf8280).r(FUNC(duet16_state::rtc_stat_r)); map(0xf8280, 0xf8280).w(FUNC(duet16_state::dispctrl_w)); map(0xfe000, 0xfffff).rom().region("rom", 0); } void duet16_state::duet16_io(address_map &map) { } WRITE8_MEMBER(duet16_state::pal_w) { int entry = (BIT(offset, 0) ? 2 : 0) | (BIT(offset, 5) ? 0 : 4); m_pal->set_pen_color(entry, pal1bit(BIT(data, 1)), pal1bit(BIT(data, 2)), pal1bit(BIT(data, 0))); m_pal->set_pen_color(entry + 1, pal1bit(BIT(data, 5)), pal1bit(BIT(data, 6)), pal1bit(BIT(data, 4))); } WRITE8_MEMBER(duet16_state::dispctrl_w) { m_dispctrl = data; } MC6845_UPDATE_ROW(duet16_state::crtc_update_row) { u8 *gvram = (u8 *)&m_gvram[0]; for(int i = 0; i < x_count; i++) { u16 coffset = (ma + i) & 0x07ff; u16 goffset = (((ma * 16) + (ra * 80) + i) & 0x7fff) ^ 1; u8 g2 = gvram[goffset]; u8 g1 = gvram[goffset + 0x08000]; u8 g0 = gvram[goffset + 0x10000]; u8 attr = m_cvram[coffset] >> 8; u8 chr = m_cvram[coffset & ~BIT(attr, 6)] & 0xff; u8 data = m_chrrom->base()[(chr * 16) + ra + (BIT(m_dispctrl, 3) * 0x1000)]; if(BIT(attr, 6)) { if(!(i & 1)) data = bitswap<8>(data, 7, 7, 6, 6, 5, 5, 4, 4); else data = bitswap<8>(data, 3, 3, 2, 2, 1, 1, 0, 0); } if(BIT(attr, 4) && (m_screen->frame_number() & 32)) // ~1.7 Hz data = 0; if(BIT(attr, 3)) data ^= 0xff; if(BIT(attr, 5) && (ra > 12)) // underline start? { attr |= 7; data = 0xff; } if(((i & ~BIT(attr, 6)) == cursor_x) && (m_screen->frame_number() & 16)) // ~3.4 Hz data ^= 0xff; rgb_t fg = m_chrpal->pen_color(attr & 7); for(int xi = 0; xi < 8; xi++) { rgb_t color; if((data & (0x80 >> xi)) && BIT(m_dispctrl, 1)) color = fg; else if(BIT(m_dispctrl, 0)) color = m_pal->pen_color((BIT(g2, 7 - xi) << 2) | (BIT(g1, 7 - xi) << 1) | BIT(g0, 7 - xi)); else color = 0; bitmap.pix32(y, (i * 8) + xi) = color; } } } WRITE_LINE_MEMBER(duet16_state::rtc_d0_w) { m_rtc_d = (m_rtc_d & ~1) | (state ? 1 : 0); } WRITE_LINE_MEMBER(duet16_state::rtc_d1_w) { m_rtc_d = (m_rtc_d & ~2) | (state ? 2 : 0); } WRITE_LINE_MEMBER(duet16_state::rtc_d2_w) { m_rtc_d = (m_rtc_d & ~4) | (state ? 4 : 0); } WRITE_LINE_MEMBER(duet16_state::rtc_d3_w) { m_rtc_d = (m_rtc_d & ~8) | (state ? 8 : 0); } WRITE_LINE_MEMBER(duet16_state::rtc_busy_w) { if (state && !m_rtc_busy && !m_rtc_irq) { m_rtc_irq = true; m_tmint->in_w<1>(1); } m_rtc_busy = state; } void duet16_state::rtc_irq_reset() { m_rtc_irq = false; m_tmint->in_w<1>(0); } READ8_MEMBER(duet16_state::rtc_r) { u8 ret; m_rtc->cs2_w(ASSERT_LINE); m_rtc->read_w(ASSERT_LINE); ret = m_rtc_d; m_rtc->read_w(CLEAR_LINE); m_rtc->cs2_w(CLEAR_LINE); return ret; } WRITE8_MEMBER(duet16_state::rtc_w) { m_rtc->d0_w(BIT(data, 0)); m_rtc->d1_w(BIT(data, 1)); m_rtc->d2_w(BIT(data, 2)); m_rtc->d3_w(BIT(data, 3)); m_rtc->cs2_w(ASSERT_LINE); m_rtc->write_w(ASSERT_LINE); m_rtc->write_w(CLEAR_LINE); m_rtc->cs2_w(CLEAR_LINE); } READ8_MEMBER(duet16_state::rtc_stat_r) { u8 status = m_rtc_irq ? 0x80 : 0; if (!machine().side_effects_disabled()) rtc_irq_reset(); return status; } WRITE8_MEMBER(duet16_state::rtc_addr_w) { m_rtc->d0_w(BIT(data, 0)); m_rtc->d1_w(BIT(data, 1)); m_rtc->d2_w(BIT(data, 2)); m_rtc->d3_w(BIT(data, 3)); m_rtc->cs2_w(ASSERT_LINE); m_rtc->address_write_w(ASSERT_LINE); m_rtc->address_write_w(CLEAR_LINE); m_rtc->cs2_w(CLEAR_LINE); } static const gfx_layout duet16_charlayout = { 8, 16, /* 8 x 16 characters */ 512, /* 512 characters */ 1, /* 1 bits per pixel */ { 0 }, /* no bitplanes */ /* x offsets */ { STEP8(0,1) }, /* y offsets */ { STEP16(0,8) }, 8*16 /* every char takes 8 bytes */ }; static GFXDECODE_START(gfx_duet16) GFXDECODE_ENTRY( "char", 0x0000, duet16_charlayout, 0, 1 ) GFXDECODE_END static void duet16_floppies(device_slot_interface &device) { device.option_add("525qd", FLOPPY_525_QD); } void duet16_keyboard_devices(device_slot_interface &device) { device.option_add("keyboard", SERIAL_KEYBOARD); } static DEVICE_INPUT_DEFAULTS_START(keyboard) DEVICE_INPUT_DEFAULTS( "RS232_TXBAUD", 0xff, RS232_BAUD_1200 ) DEVICE_INPUT_DEFAULTS( "RS232_STARTBITS", 0xff, RS232_STARTBITS_1 ) DEVICE_INPUT_DEFAULTS( "RS232_DATABITS", 0xff, RS232_DATABITS_8 ) DEVICE_INPUT_DEFAULTS( "RS232_PARITY", 0xff, RS232_PARITY_NONE ) DEVICE_INPUT_DEFAULTS( "RS232_STOPBITS", 0xff, RS232_STOPBITS_2 ) DEVICE_INPUT_DEFAULTS_END void duet16_state::duet16(machine_config &config) { I8086(config, m_maincpu, 24_MHz_XTAL / 3); m_maincpu->set_addrmap(AS_PROGRAM, &duet16_state::duet16_mem); m_maincpu->set_addrmap(AS_IO, &duet16_state::duet16_io); m_maincpu->set_irq_acknowledge_callback("pic", FUNC(pic8259_device::inta_cb)); m_maincpu->esc_opcode_handler().set("i8087", FUNC(i8087_device::insn_w)); m_maincpu->esc_data_handler().set("i8087", FUNC(i8087_device::addr_w)); i8087_device &i8087(I8087(config, "i8087", 24_MHz_XTAL / 3)); i8087.set_space_86(m_maincpu, AS_PROGRAM); i8087.irq().set(m_pic, FUNC(pic8259_device::ir2_w)); // INT87 i8087.busy().set_inputline(m_maincpu, INPUT_LINE_TEST); I8741A(config, "i8741", 20_MHz_XTAL / 4); PIC8259(config, m_pic, 0); m_pic->out_int_callback().set_inputline(m_maincpu, 0); AM9517A(config, m_dmac, 20_MHz_XTAL / 4); m_dmac->out_hreq_callback().set(FUNC(duet16_state::hrq_w)); m_dmac->in_memr_callback().set(FUNC(duet16_state::dma_mem_r)); m_dmac->out_memw_callback().set(FUNC(duet16_state::dma_mem_w)); m_dmac->in_ior_callback<0>().set(m_fdc, FUNC(upd765a_device::dma_r)); m_dmac->out_iow_callback<0>().set(m_fdc, FUNC(upd765a_device::dma_w)); m_dmac->out_eop_callback().set(m_fdc, FUNC(upd765a_device::tc_line_w)); pit8253_device &bgpit(PIT8253(config, "bgpit", 0)); bgpit.set_clk<0>(8_MHz_XTAL / 13); bgpit.set_clk<1>(8_MHz_XTAL / 13); bgpit.set_clk<2>(8_MHz_XTAL / 13); bgpit.out_handler<0>().set("sio", FUNC(upd7201_new_device::txca_w)); // TODO: selected through LS153 bgpit.out_handler<0>().append("sio", FUNC(upd7201_new_device::rxca_w)); bgpit.out_handler<1>().set("sio", FUNC(upd7201_new_device::txcb_w)); bgpit.out_handler<1>().append("sio", FUNC(upd7201_new_device::rxcb_w)); bgpit.out_handler<2>().set("kbusart", FUNC(i8251_device::write_txc)); bgpit.out_handler<2>().append("kbusart", FUNC(i8251_device::write_rxc)); ptm6840_device &itm(PTM6840(config, "itm", 0)); itm.set_external_clocks(0.0, 0.0, (8_MHz_XTAL / 8).dvalue()); // C3 = 1MHz itm.o3_callback().set("itm", FUNC(ptm6840_device::set_c1)); // C1 = C2 = O3 itm.o3_callback().append("itm", FUNC(ptm6840_device::set_c2)); itm.irq_callback().set(m_tmint, FUNC(input_merger_device::in_w<0>)); upd7201_new_device& sio(UPD7201_NEW(config, "sio", 8_MHz_XTAL / 2)); sio.out_int_callback().set("pic", FUNC(pic8259_device::ir1_w)); // INT5 i8251_device &kbusart(I8251(config, "kbusart", 8_MHz_XTAL / 4)); kbusart.txd_handler().set("kbd", FUNC(rs232_port_device::write_txd)); kbusart.rts_handler().set("kbusart", FUNC(i8251_device::write_cts)); kbusart.rxrdy_handler().set("kbint", FUNC(input_merger_device::in_w<0>)); kbusart.txrdy_handler().set("kbint", FUNC(input_merger_device::in_w<1>)); rs232_port_device &kbd(RS232_PORT(config, "kbd", duet16_keyboard_devices, "keyboard")); kbd.rxd_handler().set("kbusart", FUNC(i8251_device::write_rxd)); kbd.set_option_device_input_defaults("keyboard", DEVICE_INPUT_DEFAULTS_NAME(keyboard)); INPUT_MERGER_ANY_HIGH(config, "kbint").output_handler().set(m_pic, FUNC(pic8259_device::ir5_w)); // INT2 INPUT_MERGER_ANY_HIGH(config, m_tmint).output_handler().set(m_pic, FUNC(pic8259_device::ir0_w)); // INT6 UPD765A(config, m_fdc, 8_MHz_XTAL, true, false); m_fdc->drq_wr_callback().set(m_dmac, FUNC(am9517a_device::dreq0_w)); m_fdc->intrq_wr_callback().set(m_pic, FUNC(pic8259_device::ir3_w)); // INT4 FLOPPY_CONNECTOR(config, "fdc:0", duet16_floppies, "525qd", floppy_image_device::default_floppy_formats, true); FLOPPY_CONNECTOR(config, "fdc:1", duet16_floppies, "525qd", floppy_image_device::default_floppy_formats, true); hd6845s_device &crtc(HD6845S(config, "crtc", 2000000)); // "46505S" on schematics crtc.set_char_width(8); crtc.set_update_row_callback(FUNC(duet16_state::crtc_update_row)); PALETTE(config, m_pal).set_entries(8); PALETTE(config, m_chrpal, palette_device::BRG_3BIT); GFXDECODE(config, "gfxdecode", m_chrpal, gfx_duet16); SCREEN(config, m_screen, SCREEN_TYPE_RASTER); m_screen->set_refresh_hz(60); m_screen->set_size(640, 480); m_screen->set_visarea_full(); m_screen->set_screen_update("crtc", FUNC(hd6845s_device::screen_update)); MSM58321(config, m_rtc, 32768_Hz_XTAL); m_rtc->d0_handler().set(FUNC(duet16_state::rtc_d0_w)); m_rtc->d1_handler().set(FUNC(duet16_state::rtc_d1_w)); m_rtc->d2_handler().set(FUNC(duet16_state::rtc_d2_w)); m_rtc->d3_handler().set(FUNC(duet16_state::rtc_d3_w)); m_rtc->busy_handler().set(FUNC(duet16_state::rtc_busy_w)); m_rtc->set_year0(1980); m_rtc->set_default_24h(true); } ROM_START(duet16) ROM_REGION16_LE(0x2000, "rom", 0) ROM_LOAD16_BYTE("duet16_h516a_3.bin", 0x0001, 0x1000, CRC(936706aa) SHA1(412ff9c7bf4443d2ed29a8d792fc3c849c9393cc)) ROM_LOAD16_BYTE("duet16_h517a_z.bin", 0x0000, 0x1000, CRC(1633cce8) SHA1(5145d04a48921cacfed17a94873e8988772fc8d4)) ROM_REGION(0x2000, "char", 0) ROM_LOAD("duet16_char_j500a_4.bin", 0x0000, 0x2000, CRC(edf860f8) SHA1(0dcc584db701d21b7c3304cd2296562ebda6fb4c)) ROM_REGION(0x400, "i8741", 0) ROM_LOAD("duet16_key_8741ak001b_z.bin", 0x000, 0x400, CRC(d23ee68d) SHA1(3b6a86fe2a304823c5385cd673f9580a35199dac)) ROM_END COMP( 1983, duet16, 0, 0, duet16, 0, duet16_state, empty_init, "Panafacom (Panasonic/Fujitsu)", "Duet-16", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)