// license:BSD-3-Clause // copyright-holders:Carl #include "emu.h" #include "cpu/i86/i86.h" #include "cpu/mcs48/mcs48.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 "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(space, offset ^ 1, mem_mask); } WRITE8_MEMBER(duet16_state::pic_w) { m_pic->write(space, 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(this, 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(this, 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, 0xf80a0).rw("kbusart", FUNC(i8251_device::data_r), FUNC(i8251_device::data_w)); map(0xf80a2, 0xf80a2).rw("kbusart", FUNC(i8251_device::status_r), FUNC(i8251_device::control_w)); map(0xf80c0, 0xf80c0).rw("crtc", FUNC(h46505_device::status_r), FUNC(h46505_device::address_w)); map(0xf80c2, 0xf80c2).rw("crtc", FUNC(h46505_device::register_r), FUNC(h46505_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("fdc", FUNC(upd765a_device::map)).umask16(0x00ff); map(0xf8120, 0xf8120).rw(this, FUNC(duet16_state::rtc_r), FUNC(duet16_state::rtc_w)); map(0xf8160, 0xf819f).w(this, FUNC(duet16_state::pal_w)); map(0xf8200, 0xf8201).r(this, FUNC(duet16_state::sysstat_r)); map(0xf8220, 0xf8220).w(this, FUNC(duet16_state::fdcctrl_w)); map(0xf8260, 0xf8260).w(this, FUNC(duet16_state::rtc_addr_w)); map(0xf8280, 0xf8280).r(this, FUNC(duet16_state::rtc_stat_r)); map(0xf8280, 0xf8280).w(this, 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 MACHINE_CONFIG_START(duet16_state::duet16) MCFG_DEVICE_ADD("maincpu", I8086, 24_MHz_XTAL / 3) MCFG_DEVICE_PROGRAM_MAP(duet16_mem) MCFG_DEVICE_IO_MAP(duet16_io) MCFG_DEVICE_IRQ_ACKNOWLEDGE_DEVICE("pic", pic8259_device, inta_cb) MCFG_DEVICE_ADD("i8741", I8741, 20_MHz_XTAL / 4) MCFG_DEVICE_ADD("pic", PIC8259, 0) MCFG_PIC8259_OUT_INT_CB(INPUTLINE("maincpu", 0)) MCFG_DEVICE_ADD("dmac", AM9517A, 20_MHz_XTAL / 4) MCFG_AM9517A_OUT_HREQ_CB(WRITELINE(*this, duet16_state, hrq_w)) MCFG_AM9517A_IN_MEMR_CB(READ8(*this, duet16_state, dma_mem_r)) MCFG_AM9517A_OUT_MEMW_CB(WRITE8(*this, duet16_state, dma_mem_w)) MCFG_AM9517A_IN_IOR_0_CB(READ8("fdc", upd765a_device, mdma_r)) MCFG_AM9517A_OUT_IOW_0_CB(WRITE8("fdc", upd765a_device, mdma_w)) MCFG_AM9517A_OUT_EOP_CB(WRITELINE("fdc", upd765a_device, tc_line_w)) MCFG_DEVICE_ADD("bgpit", PIT8253, 0) MCFG_PIT8253_CLK0(8_MHz_XTAL / 13) MCFG_PIT8253_CLK1(8_MHz_XTAL / 13) MCFG_PIT8253_CLK2(8_MHz_XTAL / 13) MCFG_PIT8253_OUT0_HANDLER(WRITELINE("sio", upd7201_new_device, txca_w)) // TODO: selected through LS153 MCFG_DEVCB_CHAIN_OUTPUT(WRITELINE("sio", upd7201_new_device, rxca_w)) MCFG_PIT8253_OUT1_HANDLER(WRITELINE("sio", upd7201_new_device, txcb_w)) MCFG_DEVCB_CHAIN_OUTPUT(WRITELINE("sio", upd7201_new_device, rxcb_w)) MCFG_PIT8253_OUT2_HANDLER(WRITELINE("kbusart", i8251_device, write_txc)) MCFG_DEVCB_CHAIN_OUTPUT(WRITELINE("kbusart", i8251_device, write_rxc)) MCFG_DEVICE_ADD("itm", PTM6840, 0) MCFG_PTM6840_EXTERNAL_CLOCKS(0.0, 0.0, (8_MHz_XTAL / 8).dvalue()) // C3 = 1MHz MCFG_PTM6840_O3_CB(WRITELINE("itm", ptm6840_device, set_c1)) // C1 = C2 = O3 MCFG_DEVCB_CHAIN_OUTPUT(WRITELINE("itm", ptm6840_device, set_c2)) MCFG_PTM6840_IRQ_CB(WRITELINE("tmint", input_merger_device, in_w<0>)) MCFG_DEVICE_ADD("sio", UPD7201_NEW, 8_MHz_XTAL / 2) MCFG_Z80SIO_OUT_INT_CB(WRITELINE("pic", pic8259_device, ir1_w)) // INT5 MCFG_DEVICE_ADD("kbusart", I8251, 8_MHz_XTAL / 4) MCFG_I8251_TXD_HANDLER(WRITELINE("kbd", rs232_port_device, write_txd)) MCFG_I8251_RTS_HANDLER(WRITELINE("kbusart", i8251_device, write_cts)) MCFG_I8251_RXRDY_HANDLER(WRITELINE("kbint", input_merger_device, in_w<0>)) MCFG_I8251_TXRDY_HANDLER(WRITELINE("kbint", input_merger_device, in_w<1>)) MCFG_DEVICE_ADD("kbd", RS232_PORT, duet16_keyboard_devices, "keyboard") MCFG_RS232_RXD_HANDLER(WRITELINE("kbusart", i8251_device, write_rxd)) MCFG_SLOT_OPTION_DEVICE_INPUT_DEFAULTS("keyboard", keyboard) MCFG_INPUT_MERGER_ANY_HIGH("kbint") MCFG_INPUT_MERGER_OUTPUT_HANDLER(WRITELINE("pic", pic8259_device, ir5_w)) // INT2 MCFG_INPUT_MERGER_ANY_HIGH("tmint") MCFG_INPUT_MERGER_OUTPUT_HANDLER(WRITELINE("pic", pic8259_device, ir0_w)) // INT6 MCFG_UPD765A_ADD("fdc", true, false) MCFG_UPD765_DRQ_CALLBACK(WRITELINE("dmac", am9517a_device, dreq0_w)) MCFG_UPD765_INTRQ_CALLBACK(WRITELINE("pic", pic8259_device, ir3_w)) // INT4 MCFG_FLOPPY_DRIVE_ADD("fdc:0", duet16_floppies, "525qd", floppy_image_device::default_floppy_formats) MCFG_SLOT_FIXED(true) MCFG_FLOPPY_DRIVE_ADD("fdc:1", duet16_floppies, "525qd", floppy_image_device::default_floppy_formats) MCFG_SLOT_FIXED(true) MCFG_DEVICE_ADD("crtc", H46505, 2000000) MCFG_MC6845_CHAR_WIDTH(8) MCFG_MC6845_UPDATE_ROW_CB(duet16_state, crtc_update_row) MCFG_PALETTE_ADD("palette", 8) MCFG_PALETTE_ADD_3BIT_BRG("chrpal") MCFG_DEVICE_ADD("gfxdecode", GFXDECODE, "chrpal", gfx_duet16) MCFG_SCREEN_ADD("screen", RASTER) MCFG_SCREEN_REFRESH_RATE(60) MCFG_SCREEN_SIZE(640, 480) MCFG_SCREEN_VISIBLE_AREA(0, 640-1, 0, 480-1) MCFG_SCREEN_UPDATE_DEVICE("crtc", h46505_device, screen_update) MCFG_DEVICE_ADD("rtc", MSM58321, 32768_Hz_XTAL) MCFG_MSM58321_D0_HANDLER(WRITELINE(*this, duet16_state, rtc_d0_w)) MCFG_MSM58321_D1_HANDLER(WRITELINE(*this, duet16_state, rtc_d1_w)) MCFG_MSM58321_D2_HANDLER(WRITELINE(*this, duet16_state, rtc_d2_w)) MCFG_MSM58321_D3_HANDLER(WRITELINE(*this, duet16_state, rtc_d3_w)) MCFG_MSM58321_BUSY_HANDLER(WRITELINE(*this, duet16_state, rtc_busy_w)) MCFG_MSM58321_YEAR0(1980) MCFG_MSM58321_DEFAULT_24H(true) MACHINE_CONFIG_END ROM_START(duet16) ROM_REGION(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)