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(MESS) super80 : more work with fdc

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This commit is contained in:
Robbbert 2014-04-26 09:40:46 +00:00
parent 473f022573
commit 862d0e262d
1 changed files with 20 additions and 1 deletions
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21
src/mess/machine/super80.c
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@ -152,11 +152,30 @@ TIMER_CALLBACK_MEMBER(super80_state::super80_halfspeed)
READ8_MEMBER( super80_state::port3e_r )
{
return 0xff;
return 0xF8 | m_fdc->intrq_r() | (m_fdc->drq_r() << 1) | 2;
}
// UFDC board can support 4 drives; we support 2
WRITE8_MEMBER( super80_state::port3f_w )
{
// m_fdc->58(BIT(data, 0)); 5/8 pin not emulated in wd_fdc
m_fdc->set_unscaled_clock(BIT(data, 1) ? 2e6 : 1e6); // ENMF pin not emulated in wd_fdc
floppy_image_device *floppy = NULL;
if (BIT(data, 2)) floppy = m_floppy0->get_device();
if (BIT(data, 3)) floppy = m_floppy1->get_device();
//if (BIT(data, 4)) floppy = m_floppy2->get_device();
//if (BIT(data, 5)) floppy = m_floppy3->get_device();
m_fdc->set_floppy(floppy);
if (floppy)
{
floppy->mon_w(0);
floppy->ss_w(!BIT(data, 6));
}
m_fdc->dden_w(BIT(data, 7));
}
READ8_MEMBER( super80_state::super80_f2_r )