UINT8 comx_fd_device::comx_io_r(offs_t offset)
{
UINT8 data = 0xff;
if (offset == 2)
{
if (m_q)
{
data = m_intrq;
}
else
{
data = wd17xx_r(m_fdc, m_addr);
}
}
return data;
}
UINT8 abc1600_state::read_io(offs_t offset)
{
address_space *program = m_maincpu->memory().space(AS_PROGRAM);
UINT8 data = 0;
if (X12)
{
if (X11)
{
switch (A10_A9_A8)
{
case IORD0:
data = iord0_r(*program, offset);
break;
default:
logerror("Unmapped read from virtual I/O %06x\n", offset);
}
}
else
{
switch (A10_A9_A8)
{
case FLP:
data = wd17xx_r(m_fdc, A2_A1);
break;
case CRT:
if (A0)
data = mc6845_register_r(m_crtc, 0);
else
data = mc6845_status_r(m_crtc, 0);
break;
case DRT:
data = z80dart_ba_cd_r(m_dart, A2_A1 ^ 0x03);
break;
case DMA0:
data = m_dma0->read();
break;
case DMA1:
data = m_dma1->read();
break;
case DMA2:
data = m_dma2->read();
break;
case SCC:
data = scc8530_r(m_scc, A1_A2);
break;
case CIO:
data = m_cio->read(*program, A2_A1);
break;
}
}
}
else
{
// BUS0I, BUS0X, BUS1, BUS2
logerror("Unmapped read from virtual I/O %06x\n", offset);
}
return data;
}
