void ds75161a_device::update_signals()
{
m_out_ren_func(m_dc ? 1 : m_ren);
m_out_ifc_func(m_dc ? 1 : m_ifc);
m_out_ndac_func(m_te ? 1 : m_ndac);
m_out_nrfd_func(m_te ? 1 : m_nrfd);
m_out_dav_func(m_te ? m_dav : 1);
m_out_atn_func(m_dc ? 1 : m_atn);
m_out_srq_func(m_dc ? m_srq : 1 );
int atn = m_in_atn_func();
if (m_te && atn) m_out_eoi_func(m_eoi);
else if (!m_dc && !atn) m_out_eoi_func(m_eoi);
else m_out_eoi_func(1);
}
inline void ieee488_device::set_signal(device_t *device, int signal, int state)
{
bool changed = false;
if (device == this)
{
if (m_line[signal] != state)
{
if (LOG) logerror("%s IEEE488: '%s' %s %u\n", machine().describe_context(), tag(), SIGNAL_NAME[signal], state);
m_line[signal] = state;
changed = true;
}
}
else
{
daisy_entry *entry = m_device_list.first();
while (entry)
{
if (!strcmp(entry->m_device->tag(), device->tag()))
{
if (entry->m_line[signal] != state)
{
if (LOG) logerror("%s IEEE488: '%s' %s %u\n", machine().describe_context(), device->tag(), SIGNAL_NAME[signal], state);
entry->m_line[signal] = state;
changed = true;
}
}
entry = entry->next();
}
}
if (changed)
{
switch (signal)
{
case EOI: m_out_eoi_func(state); break;
case DAV: m_out_dav_func(state); break;
case NRFD: m_out_nrfd_func(state); break;
case NDAC: m_out_ndac_func(state); break;
case IFC: m_out_ifc_func(state); break;
case SRQ: m_out_srq_func(state); break;
case ATN: m_out_atn_func(state); break;
case REN: m_out_ren_func(state); break;
}
daisy_entry *entry = m_device_list.first();
while (entry)
{
switch (signal)
{
case EOI:
entry->m_interface->ieee488_eoi(state);
break;
case DAV:
entry->m_interface->ieee488_dav(state);
break;
case NRFD:
entry->m_interface->ieee488_nrfd(state);
break;
case NDAC:
entry->m_interface->ieee488_ndac(state);
break;
case IFC:
entry->m_interface->ieee488_ifc(state);
break;
case SRQ:
entry->m_interface->ieee488_srq(state);
break;
case ATN:
entry->m_interface->ieee488_atn(state);
break;
case REN:
entry->m_interface->ieee488_ren(state);
break;
}
entry = entry->next();
}
if (LOG) logerror("IEEE488: EOI %u DAV %u NRFD %u NDAC %u IFC %u SRQ %u ATN %u REN %u DIO %02x\n",
get_signal(EOI), get_signal(DAV), get_signal(NRFD), get_signal(NDAC),
get_signal(IFC), get_signal(SRQ), get_signal(ATN), get_signal(REN), get_data());
}
}
void ieee488_stub_device::ieee488_srq(int state)
{
m_out_srq_func(state);
}