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(MESS) excalibur : floppies are working (nw)
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Robert
parent
0846c5295b
commit
927602a816
@ -12,18 +12,22 @@ We have Basic 1.1. Other known versions are 1.01, 2.1
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There are 2 versions of the colour prom, which have different palettes.
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We have the later version.
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Control W then Enter will switch between 40 and 80 characters per line.
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Notes:
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- Control W then Enter will switch between 40 and 80 characters per line.
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- Control V turns cursor on
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- Graphics commands such as LINE, CIRCLE, HGRCLS, HGRSET etc only work with disk basic
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ToDo:
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- Colours are approximate.
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- Disk controller
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- Graphics commands such as LINE and CIRCLE produce a syntax error.
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- Some commands such as HGRCLS are missing from the rom. Perhaps we need a later version?
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- Issues with bitmap graphics
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- Disk controller, works with old wd17xx but crashes on new wd.
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- Hardware supports 8 and 5.25 inch floppies, but we only support 5.25 as this
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is the only software that exists.
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- The schematic shows the audio counter connected to 2MHz, but this produces
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sounds that are too high. Connected to 1MHz for now.
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- Serial
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- Parallel / Centronics
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- Need software
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- Need more software
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- Pasting can sometimes drop a character.
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****************************************************************************/
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@ -44,6 +48,8 @@ ToDo:
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#include "sound/wave.h"
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#include "sound/speaker.h"
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#include "machine/z80dma.h"
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#include "machine/rescap.h"
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#include "machine/74123.h"
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#if NEWFDC
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#include "machine/wd_fdc.h"
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#include "formats/excali64_dsk.h"
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@ -64,6 +70,7 @@ public:
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, m_crtc(*this, "crtc")
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, m_io_keyboard(*this, "KEY")
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, m_dma(*this, "dma")
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, m_u12(*this, "u12")
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, m_fdc(*this, "fdc")
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#if NEWFDC
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, m_floppy0(*this, "fdc:0")
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@ -92,6 +99,7 @@ public:
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MC6845_UPDATE_ROW(update_row);
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DECLARE_WRITE_LINE_MEMBER(crtc_de);
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DECLARE_WRITE_LINE_MEMBER(crtc_vs);
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DECLARE_WRITE8_MEMBER(motor_w);
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DECLARE_MACHINE_RESET(excali64);
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required_device<palette_device> m_palette;
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@ -103,11 +111,13 @@ private:
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UINT8 m_kbdrow;
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bool m_crtc_vs;
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bool m_crtc_de;
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bool m_motor;
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required_device<cpu_device> m_maincpu;
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required_device<cassette_image_device> m_cass;
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required_device<mc6845_device> m_crtc;
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required_ioport_array<8> m_io_keyboard;
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required_device<z80dma_device> m_dma;
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required_device<ttl74123_device> m_u12;
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#if NEWFDC
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required_device<wd2793_t> m_fdc;
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required_device<floppy_connector> m_floppy0;
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@ -256,14 +266,27 @@ static const floppy_interface excali64_floppy_interface =
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};
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#endif
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// pulses from port E4 bit 5 restart the 74123. After 3.6 secs without a pulse, the motor gets turned off.
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WRITE8_MEMBER( excali64_state::motor_w )
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{
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m_motor = BIT(data, 0);
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#if NEWFDC
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m_floppy0->get_device()->mon_w(!m_motor);
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#else
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//const char *floppy_tags[4] = { FLOPPY_0, FLOPPY_1, FLOPPY_2, FLOPPY_3 };
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legacy_floppy_image_device *flop = subdevice<legacy_floppy_image_device>(FLOPPY_0);
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flop->floppy_mon_w(!m_motor); // motor on
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//flop->floppy_drive_set_ready_state(1, 0); // this is commented out in flopdrv.c, so does nothing
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#endif
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}
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READ8_MEMBER( excali64_state::porte8_r )
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{
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return 0xff;
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return 0xfc | (UINT8)m_motor;
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}
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WRITE8_MEMBER( excali64_state::porte4_w )
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{
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//printf("%X ",data);
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#if NEWFDC
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floppy_image_device *floppy = NULL;
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if (BIT(data, 0)) floppy = m_floppy0->get_device();
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@ -272,32 +295,24 @@ WRITE8_MEMBER( excali64_state::porte4_w )
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if (floppy)
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floppy->ss_w(BIT(data, 4));
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#else
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UINT8 i;
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for (i = 0; i < 4; i++)
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{
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if BIT(data, i)
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{
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m_fdc->set_drive(i);
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break;
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}
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}
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//if (data & 0x01) m_fdc->set_drive(0);
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//if (data & 0x02) m_fdc->set_drive(1);
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//if (data & 0x04) m_fdc->set_drive(2);
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//if (data & 0x08) m_fdc->set_drive(3);
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//if (data & 0x10) m_fdc->set_side((data & 0x10) >> 4);
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const char *floppy_tags[4] = { FLOPPY_0, FLOPPY_1, FLOPPY_2, FLOPPY_3 };
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//UINT8 i;
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//for (i = 0; i < 4; i++)
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//{
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// if BIT(data, i)
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// {
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// m_fdc->set_drive(i);
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// break;
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// }
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//}
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if BIT(data, 0) m_fdc->set_drive(0);
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//if BIT(data, 1) m_fdc->set_drive(1);
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//if BIT(data, 2) m_fdc->set_drive(2);
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//if BIT(data, 3) m_fdc->set_drive(3);
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m_fdc->set_side(BIT(data, 4));
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m_fdc->dden_w(1);//!BIT(data, 6)); // we want double density
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//if ((data & 0x04) == 0) // reset
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//m_fdc->reset();
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// bit 3 connected to pin 23 "HRDY" of FDC
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// TEMP HACK, FDD motor and RDY FDC pin controlled by HLD pin of FDC
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legacy_floppy_image_device *flop = subdevice<legacy_floppy_image_device>(floppy_tags[i]);
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flop->floppy_mon_w(0); // motor on
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flop->floppy_drive_set_ready_state(1, 0);
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#endif
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m_u12->b_w(space,offset, BIT(data, 5));
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}
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WRITE8_MEMBER( excali64_state::portec_w )
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@ -624,15 +639,16 @@ static MACHINE_CONFIG_START( excali64, excali64_state )
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MCFG_CASSETTE_ADD( "cassette" )
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#if NEWFDC
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MCFG_WD2793x_ADD("fdc", XTAL_16MHz / 16)
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MCFG_WD_FDC_FORCE_READY
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MCFG_WD_FDC_DRQ_CALLBACK(DEVWRITELINE("dma", z80dma_device, rdy_w))
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MCFG_FLOPPY_DRIVE_ADD("fdc:0", excali64_floppies, "525dd", floppy_image_device::default_floppy_formats)// excali64_state::floppy_formats)
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MCFG_FLOPPY_DRIVE_ADD("fdc:1", excali64_floppies, "525dd", floppy_image_device::default_floppy_formats)
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//MCFG_FLOPPY_DRIVE_ADD("fdc:1", excali64_floppies, "525dd", floppy_image_device::default_floppy_formats)
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#else
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MCFG_DEVICE_ADD("fdc", WD2793, 0)
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MCFG_WD17XX_DEFAULT_DRIVE4_TAGS
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//MCFG_WD17XX_INTRQ_CALLBACK(WRITELINE(nascom1_state, nascom2_fdc_intrq_w))
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//MCFG_WD17XX_DRQ_CALLBACK(WRITELINE(nascom1_state, nascom2_fdc_drq_w))
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//MCFG_WD17XX_DDEN_CALLBACK(VCC)
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MCFG_LEGACY_FLOPPY_4_DRIVES_ADD(excali64_floppy_interface)
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MCFG_WD17XX_DEFAULT_DRIVE1_TAGS
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MCFG_WD17XX_DRQ_CALLBACK(DEVWRITELINE("dma", z80dma_device, rdy_w))
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MCFG_LEGACY_FLOPPY_DRIVE_ADD(FLOPPY_0, excali64_floppy_interface)
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//MCFG_LEGACY_FLOPPY_4_DRIVES_ADD(excali64_floppy_interface)
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#endif
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MCFG_DEVICE_ADD("dma", Z80DMA, XTAL_16MHz/4)
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MCFG_Z80DMA_OUT_BUSREQ_CB(WRITELINE(excali64_state, busreq_w))
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@ -640,6 +656,15 @@ static MACHINE_CONFIG_START( excali64, excali64_state )
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MCFG_Z80DMA_OUT_MREQ_CB(WRITE8(excali64_state, memory_write_byte))
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MCFG_Z80DMA_IN_IORQ_CB(READ8(excali64_state, io_read_byte))
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MCFG_Z80DMA_OUT_IORQ_CB(WRITE8(excali64_state, io_write_byte))
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MCFG_DEVICE_ADD("u12", TTL74123, 0)
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MCFG_TTL74123_CONNECTION_TYPE(TTL74123_GROUNDED) /* the hook up type (no idea what this means */
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MCFG_TTL74123_RESISTOR_VALUE(RES_K(100)) /* resistor connected between RCext & 5v */
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MCFG_TTL74123_CAPACITOR_VALUE(CAP_U(100)) /* capacitor connected between Cext and RCext */
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MCFG_TTL74123_A_PIN_VALUE(0) /* A pin - grounded */
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MCFG_TTL74123_B_PIN_VALUE(1) /* B pin - driven by port e4 bit 5 */
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MCFG_TTL74123_CLEAR_PIN_VALUE(1) /* Clear pin - pulled high */
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MCFG_TTL74123_OUTPUT_CHANGED_CB(WRITE8(excali64_state, motor_w))
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MACHINE_CONFIG_END
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/* ROM definition */
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