diff options
Diffstat (limited to 'src/mess/drivers/excali64.c')
-rw-r--r-- | src/mess/drivers/excali64.c | 99 |
1 files changed, 57 insertions, 42 deletions
diff --git a/src/mess/drivers/excali64.c b/src/mess/drivers/excali64.c index 2255cc461eb..559cc72d657 100644 --- a/src/mess/drivers/excali64.c +++ b/src/mess/drivers/excali64.c @@ -20,13 +20,11 @@ Notes: ToDo: - Colours are approximate. - Disk controller, works with old wd17xx but crashes on new wd. -- Hardware supports 8 and 5.25 inch floppies, but we only support 5.25 as this +- Hardware supports 20cm and 13cm floppies, but we only support 13cm as this is the only software that exists. - The schematic shows the audio counter connected to 2MHz, but this produces sounds that are too high. Connected to 1MHz for now. - Serial -- Parallel / Centronics -- Need more software - Pasting can sometimes drop a character. ****************************************************************************/ @@ -42,7 +40,7 @@ ToDo: //#include "machine/clock.h" #include "machine/pit8253.h" #include "machine/i8255.h" -//#include "bus/centronics/ctronics.h" +#include "bus/centronics/ctronics.h" #include "imagedev/cassette.h" #include "sound/wave.h" #include "sound/speaker.h" @@ -70,6 +68,7 @@ public: , m_io_keyboard(*this, "KEY") , m_dma(*this, "dma") , m_u12(*this, "u12") + , m_centronics(*this, "centronics") , m_fdc(*this, "fdc") #if NEWFDC , m_floppy0(*this, "fdc:0") @@ -90,6 +89,7 @@ public: #if NEWFDC DECLARE_FLOPPY_FORMATS(floppy_formats); #endif + DECLARE_WRITE_LINE_MEMBER(cent_busy_w); DECLARE_WRITE_LINE_MEMBER(busreq_w); DECLARE_READ8_MEMBER(memory_read_byte); DECLARE_WRITE8_MEMBER(memory_write_byte); @@ -111,12 +111,14 @@ private: bool m_crtc_vs; bool m_crtc_hs; bool m_motor; + bool m_centronics_busy; required_device<cpu_device> m_maincpu; required_device<cassette_image_device> m_cass; required_device<mc6845_device> m_crtc; required_ioport_array<8> m_io_keyboard; required_device<z80dma_device> m_dma; required_device<ttl74123_device> m_u12; + required_device<centronics_device> m_centronics; #if NEWFDC required_device<wd2793_t> m_fdc; required_device<floppy_connector> m_floppy0; @@ -239,6 +241,11 @@ static INPUT_PORTS_START( excali64 ) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("7 &") PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('&') INPUT_PORTS_END +WRITE_LINE_MEMBER( excali64_state::cent_busy_w ) +{ + m_centronics_busy = state; +} + #if NEWFDC FLOPPY_FORMATS_MEMBER( excali64_state::floppy_formats ) FLOPPY_EXCALI64_FORMAT @@ -270,12 +277,13 @@ WRITE8_MEMBER( excali64_state::motor_w ) { m_motor = BIT(data, 0); #if NEWFDC + m_floppy1->get_device()->mon_w(!m_motor); m_floppy0->get_device()->mon_w(!m_motor); #else - //const char *floppy_tags[4] = { FLOPPY_0, FLOPPY_1, FLOPPY_2, FLOPPY_3 }; legacy_floppy_image_device *flop = subdevice<legacy_floppy_image_device>(FLOPPY_0); flop->floppy_mon_w(!m_motor); // motor on - //flop->floppy_drive_set_ready_state(1, 0); // this is commented out in flopdrv.c, so does nothing + flop = subdevice<legacy_floppy_image_device>(FLOPPY_1); + flop->floppy_mon_w(!m_motor); // motor on #endif } @@ -288,41 +296,48 @@ WRITE8_MEMBER( excali64_state::porte4_w ) { #if NEWFDC floppy_image_device *floppy = NULL; - if (BIT(data, 0)) floppy = m_floppy0->get_device(); - //if (BIT(data, 1)) floppy = m_floppy1->get_device(); - m_fdc->set_floppy(floppy); + if (BIT(data, 0)) + floppy = m_floppy0->get_device(); + + if (BIT(data, 1)) + floppy = m_floppy1->get_device(); + if (floppy) + { + m_fdc->set_floppy(floppy); floppy->ss_w(BIT(data, 4)); + } #else - //UINT8 i; - //for (i = 0; i < 4; i++) - //{ - // if BIT(data, i) - // { - // m_fdc->set_drive(i); - // break; - // } - //} - if BIT(data, 0) m_fdc->set_drive(0); - //if BIT(data, 1) m_fdc->set_drive(1); - //if BIT(data, 2) m_fdc->set_drive(2); - //if BIT(data, 3) m_fdc->set_drive(3); - m_fdc->set_side(BIT(data, 4)); + if BIT(data, 0) + m_fdc->set_drive(0); - m_fdc->dden_w(1);//!BIT(data, 6)); // we want double density + if BIT(data, 1) + m_fdc->set_drive(1); + + m_fdc->set_side(BIT(data, 4)); #endif - m_u12->b_w(space,offset, BIT(data, 5)); + + m_u12->b_w(space,offset, BIT(data, 5)); // motor pulse } +/* +d0 = precomp (selectable by jumper) +d1 = size select (we only support 13cm) +d2 = density select (0 = double) +*/ WRITE8_MEMBER( excali64_state::portec_w ) { +#if NEWFDC + m_fdc->dden_w(BIT(data, 2)); +#else + m_fdc->dden_w(!BIT(data, 2)); +#endif } WRITE_LINE_MEMBER( excali64_state::busreq_w ) { // since our Z80 has no support for BUSACK, we assume it is granted immediately m_maincpu->set_input_line(Z80_INPUT_LINE_BUSRQ, state); - //m_maincpu->set_input_line(INPUT_LINE_HALT, state); // do we need this? m_dma->bai_w(state); // tell dma that bus has been granted } @@ -357,7 +372,8 @@ WRITE8_MEMBER( excali64_state::ppib_w ) READ8_MEMBER( excali64_state::ppic_r ) { - UINT8 data = 0xf7; + UINT8 data = 0xf4; // READY line must be low to print + data |= (UINT8)m_centronics_busy; data |= (m_cass->input() > 0.1) << 3; return data; } @@ -365,6 +381,7 @@ READ8_MEMBER( excali64_state::ppic_r ) WRITE8_MEMBER( excali64_state::ppic_w ) { m_cass->output(BIT(data, 7) ? -1.0 : +1.0); + m_centronics->write_strobe(BIT(data, 4)); } READ8_MEMBER( excali64_state::port00_r ) @@ -521,7 +538,7 @@ PALETTE_INIT_MEMBER( excali64_state, excali64 ) membank("bankr4")->configure_entry(2, &m_p_hiresram[0x0000]); membank("bankw4")->configure_entry(2, &m_p_hiresram[0x0000]); - // Set up foreground palettes + // Set up foreground colours UINT8 r,g,b,i,code; for (i = 0; i < 32; i++) { @@ -599,21 +616,16 @@ static MACHINE_CONFIG_START( excali64, excali64_state ) MCFG_DEVICE_ADD("pit", PIT8253, 0) MCFG_PIT8253_CLK0(XTAL_16MHz / 16) /* Timer 0: tone gen for speaker */ MCFG_PIT8253_OUT0_HANDLER(DEVWRITELINE("speaker", speaker_sound_device, level_w)) - MCFG_PIT8253_CLK1(XTAL_16MHz / 8) /* Timer 1: baud rate gen for 8251 */ + //MCFG_PIT8253_CLK1(XTAL_16MHz / 16) /* Timer 1: baud rate gen for 8251 */ //MCFG_PIT8253_OUT1_HANDLER(WRITELINE(excali64_state, write_uart_clock)) - //MCFG_PIT8253_CLK2(XTAL_16MHz / 8) /* Timer 2: not used */ + //MCFG_PIT8253_CLK2(XTAL_16MHz / 16) /* Timer 2: not used */ MCFG_DEVICE_ADD("ppi", I8255A, 0 ) - //MCFG_I8255_IN_PORTA_CB(READ8(excali64_state, ppia_r)) - //MCFG_I8255_OUT_PORTA_CB(WRITE8(excali64_state, ppia_w)) // parallel port - //MCFG_I8255_IN_PORTB_CB(READ8(excali64_state, ppib_r)) + MCFG_I8255_OUT_PORTA_CB(DEVWRITE8("cent_data_out", output_latch_device, write)) // parallel port MCFG_I8255_OUT_PORTB_CB(WRITE8(excali64_state, ppib_w)) MCFG_I8255_IN_PORTC_CB(READ8(excali64_state, ppic_r)) MCFG_I8255_OUT_PORTC_CB(WRITE8(excali64_state, ppic_w)) - //MCFG_DEVICE_ADD("acia_clock", CLOCK, 153600) - //MCFG_CLOCK_SIGNAL_HANDLER(WRITELINE(excali64_state, write_acia_clock)) - /* sound hardware */ MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SOUND_ADD("speaker", SPEAKER_SOUND, 0) @@ -645,13 +657,12 @@ static MACHINE_CONFIG_START( excali64, excali64_state ) MCFG_WD_FDC_FORCE_READY MCFG_WD_FDC_DRQ_CALLBACK(DEVWRITELINE("dma", z80dma_device, rdy_w)) MCFG_FLOPPY_DRIVE_ADD("fdc:0", excali64_floppies, "525dd", floppy_image_device::default_floppy_formats)// excali64_state::floppy_formats) - //MCFG_FLOPPY_DRIVE_ADD("fdc:1", excali64_floppies, "525dd", floppy_image_device::default_floppy_formats) + MCFG_FLOPPY_DRIVE_ADD("fdc:1", excali64_floppies, "525dd", floppy_image_device::default_floppy_formats) #else MCFG_DEVICE_ADD("fdc", WD2793, 0) - MCFG_WD17XX_DEFAULT_DRIVE1_TAGS + MCFG_WD17XX_DEFAULT_DRIVE2_TAGS MCFG_WD17XX_DRQ_CALLBACK(DEVWRITELINE("dma", z80dma_device, rdy_w)) - MCFG_LEGACY_FLOPPY_DRIVE_ADD(FLOPPY_0, excali64_floppy_interface) - //MCFG_LEGACY_FLOPPY_4_DRIVES_ADD(excali64_floppy_interface) + MCFG_LEGACY_FLOPPY_2_DRIVES_ADD(excali64_floppy_interface) #endif MCFG_DEVICE_ADD("dma", Z80DMA, XTAL_16MHz/4) MCFG_Z80DMA_OUT_BUSREQ_CB(WRITELINE(excali64_state, busreq_w)) @@ -661,13 +672,17 @@ static MACHINE_CONFIG_START( excali64, excali64_state ) MCFG_Z80DMA_OUT_IORQ_CB(WRITE8(excali64_state, io_write_byte)) MCFG_DEVICE_ADD("u12", TTL74123, 0) - MCFG_TTL74123_CONNECTION_TYPE(TTL74123_GROUNDED) /* the hook up type (no idea what this means */ + MCFG_TTL74123_CONNECTION_TYPE(TTL74123_GROUNDED) /* Hook up type (no idea what this means) */ MCFG_TTL74123_RESISTOR_VALUE(RES_K(100)) /* resistor connected between RCext & 5v */ MCFG_TTL74123_CAPACITOR_VALUE(CAP_U(100)) /* capacitor connected between Cext and RCext */ MCFG_TTL74123_A_PIN_VALUE(0) /* A pin - grounded */ MCFG_TTL74123_B_PIN_VALUE(1) /* B pin - driven by port e4 bit 5 */ MCFG_TTL74123_CLEAR_PIN_VALUE(1) /* Clear pin - pulled high */ MCFG_TTL74123_OUTPUT_CHANGED_CB(WRITE8(excali64_state, motor_w)) + + MCFG_CENTRONICS_ADD("centronics", centronics_devices, "printer") + MCFG_CENTRONICS_OUTPUT_LATCH_ADD("cent_data_out", "centronics") + MCFG_CENTRONICS_BUSY_HANDLER(WRITELINE(excali64_state, cent_busy_w)) MACHINE_CONFIG_END /* ROM definition */ @@ -692,4 +707,4 @@ ROM_END /* Driver */ /* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */ -COMP( 1984, excali64, 0, 0, excali64, excali64, driver_device, 0, "BGR Computers", "Excalibur 64", GAME_NOT_WORKING ) +COMP( 1984, excali64, 0, 0, excali64, excali64, driver_device, 0, "BGR Computers", "Excalibur 64", 0 ) |