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(MESS) excalibur : added 2nd drive, cleanup (nw)

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This commit is contained in:
Robert 2014-12-23 22:48:59 +11:00
parent b8fe4aa228
commit 628f0db99d
1 changed files with 39 additions and 35 deletions
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74
src/mess/drivers/excali64.c
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@ -20,7 +20,7 @@ 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.
@ -270,12 +270,13 @@ 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 +289,48 @@ 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 (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))
floppy = m_floppy0->get_device();
m_fdc->dden_w(1);//!BIT(data, 6)); // we want double density
if (BIT(data, 1))
floppy = m_floppy1->get_device();
if (floppy)
{
m_fdc->set_floppy(floppy);
floppy->ss_w(BIT(data, 4));
}
#else
if BIT(data, 0)
m_fdc->set_drive(0);
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
}
@ -521,7 +529,7 @@ 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++)
{
@ -611,9 +619,6 @@ static MACHINE_CONFIG_START( excali64, excali64_state )
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 +650,12 @@ 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))
@ -661,7 +665,7 @@ 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 */