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Added support for default NVRAM in MCCS1850. [Curt Coder]

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This commit is contained in:
Curt Coder 2011-05-07 08:50:32 +00:00
parent 5a49af2303
commit 4b896b641d
1 changed files with 8 additions and 2 deletions
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10
src/emu/machine/mccs1850.c
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@ -350,8 +350,6 @@ void mccs1850_device::device_start()
void mccs1850_device::device_reset()
{
memset(m_ram, 0xff, RAM_SIZE);
m_ram[REGISTER_STATUS] = 0x80 | STATUS_FTU;
m_ram[REGISTER_CONTROL] = 0x00;
}
@ -390,6 +388,14 @@ void mccs1850_device::rtc_set_time(int year, int month, int day, int day_of_week
void mccs1850_device::nvram_default()
{
memset(m_ram, 0xff, RAM_SIZE);
if (machine().region(tag()) != NULL)
{
UINT8 *nvram = machine().region(tag())->base();
// initialize NVRAM
memcpy(m_ram, nvram, 0x20);
}
}