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apple3: debugger-guard the $C800 switching [R. Belmont, Rob Justice]

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This commit is contained in:
arbee 2019-10-05 08:23:28 -04:00
parent 56b000344e
commit c7aa273254
1 changed files with 21 additions and 11 deletions
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32
src/mame/machine/apple3.cpp
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@ -124,7 +124,10 @@ uint8_t apple3_state::apple3_c0xx_r(offs_t offset)
case 0x24: case 0x25: case 0x26: case 0x27:
case 0x28: case 0x29: case 0x2A: case 0x2B:
case 0x2C: case 0x2D: case 0x2E: case 0x2F:
m_cnxx_slot = -1;
if (!machine().side_effects_disabled())
{
m_cnxx_slot = -1;
}
break;
case 0x30: case 0x31: case 0x32: case 0x33:
@ -813,6 +816,10 @@ uint8_t apple3_state::apple3_memory_r(offs_t offset)
}
else
{
if (machine().side_effects_disabled())
{
return 0xff;
}
/* now identify the device */
device_a2bus_card_interface *slotdevice = m_a2bus->get_a2bus_card((offset>>8) & 0x7);
@ -839,18 +846,21 @@ uint8_t apple3_state::apple3_memory_r(offs_t offset)
}
else
{
if (offset == 0xcfff)
if (!machine().side_effects_disabled())
{
m_cnxx_slot = -1;
}
if (m_cnxx_slot != -1)
{
device_a2bus_card_interface *slotdevice = m_a2bus->get_a2bus_card(m_cnxx_slot);
if (slotdevice != nullptr)
if (offset == 0xcfff)
{
rv = slotdevice->read_c800(offset&0x7ff);
m_cnxx_slot = -1;
}
if (m_cnxx_slot != -1)
{
device_a2bus_card_interface *slotdevice = m_a2bus->get_a2bus_card(m_cnxx_slot);
if (slotdevice != nullptr)
{
rv = slotdevice->read_c800(offset&0x7ff);
}
}
}
}