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-rw-r--r--src/devices/cpu/m6805/m68705.cpp15
-rw-r--r--src/devices/cpu/m6805/m68705.h5
2 files changed, 19 insertions, 1 deletions
diff --git a/src/devices/cpu/m6805/m68705.cpp b/src/devices/cpu/m6805/m68705.cpp
index 56f955c9b74..bbc96f179f2 100644
--- a/src/devices/cpu/m6805/m68705.cpp
+++ b/src/devices/cpu/m6805/m68705.cpp
@@ -204,6 +204,7 @@ m68705_new_device::m68705_new_device(
char const *shortname,
char const *source)
: m68705_device(mconfig, tag, owner, clock, type, name, addr_width, internal_map, shortname, source)
+ , device_nvram_interface(mconfig, *this)
, m_user_rom(*this, DEVICE_SELF, u32(1) << addr_width)
, m_port_open_drain{ false, false, false, false }
, m_port_mask{ 0x00, 0x00, 0x00, 0x00 }
@@ -445,6 +446,20 @@ void m68705_new_device::execute_set_input(int inputnum, int state)
}
}
+void m68705_new_device::nvram_default()
+{
+}
+
+void m68705_new_device::nvram_read(emu_file &file)
+{
+ file.read(&m_user_rom[0], m_user_rom.bytes());
+}
+
+void m68705_new_device::nvram_write(emu_file &file)
+{
+ file.write(&m_user_rom[0], m_user_rom.bytes());
+}
+
/****************************************************************************
* M68705P3x family
diff --git a/src/devices/cpu/m6805/m68705.h b/src/devices/cpu/m6805/m68705.h
index 5a2a0ff4ea0..86fa2f2f1e8 100644
--- a/src/devices/cpu/m6805/m68705.h
+++ b/src/devices/cpu/m6805/m68705.h
@@ -81,7 +81,7 @@ protected:
devcb = &m68705_new_device::set_port_cb_w<2>(*device, DEVCB_##obj);
-class m68705_new_device : public m68705_device
+class m68705_new_device : public m68705_device, public device_nvram_interface
{
public:
// static configuration helpers
@@ -140,6 +140,9 @@ protected:
virtual void device_start() override;
virtual void device_reset() override;
virtual void execute_set_input(int inputnum, int state) override;
+ virtual void nvram_default() override;
+ virtual void nvram_read(emu_file &file) override;
+ virtual void nvram_write(emu_file &file) override;
u8 m_tdr;
u8 m_tcr;