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Diffstat (limited to 'src/mame/drivers/pc.cpp')
-rw-r--r--src/mame/drivers/pc.cpp6
1 files changed, 3 insertions, 3 deletions
diff --git a/src/mame/drivers/pc.cpp b/src/mame/drivers/pc.cpp
index 0461f45a095..7c1094c2313 100644
--- a/src/mame/drivers/pc.cpp
+++ b/src/mame/drivers/pc.cpp
@@ -185,14 +185,14 @@ void pc_state::cfg_single_360K(device_t *device)
{
dynamic_cast<device_slot_interface &>(*device->subdevice("fdc:0")).set_default_option("525dd");
dynamic_cast<device_slot_interface &>(*device->subdevice("fdc:0")).set_fixed(true);
- dynamic_cast<device_slot_interface &>(*device->subdevice("fdc:1")).set_default_option("");
+ dynamic_cast<device_slot_interface &>(*device->subdevice("fdc:1")).set_default_option(nullptr);
}
void pc_state::cfg_single_720K(device_t *device)
{
dynamic_cast<device_slot_interface &>(*device->subdevice("fdc:0")).set_default_option("35dd");
dynamic_cast<device_slot_interface &>(*device->subdevice("fdc:0")).set_fixed(true);
- dynamic_cast<device_slot_interface &>(*device->subdevice("fdc:1")).set_default_option("");
+ dynamic_cast<device_slot_interface &>(*device->subdevice("fdc:1")).set_default_option(nullptr);
}
void pc_state::pccga(machine_config &config)
@@ -797,7 +797,7 @@ void pc_state::olytext30(machine_config &config)
maincpu.set_irq_acknowledge_callback("mb:pic8259", FUNC(pic8259_device::inta_cb));
subdevice<isa8_slot_device>("isa2")->set_option_machine_config("fdc_xt", cfg_single_720K);
- subdevice<isa8_slot_device>("isa3")->set_default_option("");
+ subdevice<isa8_slot_device>("isa3")->set_default_option(nullptr);
subdevice<isa8_slot_device>("isa5")->set_default_option("hdc");
subdevice<ram_device>(RAM_TAG)->set_default_size("768K");
}