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nvram devices each have their own file.

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smf- 2011-10-23 10:54:13 +00:00
parent 4e5f8f0c06
commit 3d42b012fd
1 changed files with 62 additions and 36 deletions
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80
src/emu/machine/generic.c
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@ -326,42 +326,61 @@ static astring nvram_filename(running_machine &machine, astring &result)
return result;
}
/*-------------------------------------------------
nvram_filename - returns filename of system's
NVRAM depending of selected BIOS
-------------------------------------------------*/
static astring nvram_filename(device_t &device, astring &result)
{
running_machine &machine = device.machine();
if (rom_system_bios(machine) == 0 || rom_default_bios(machine) == rom_system_bios(machine)) {
result.printf("%s\\%s",machine.basename(),device.tag());
} else {
result.printf("%s_%d\\%s",machine.basename(),rom_system_bios(machine) - 1,device.tag());
}
return result;
}
/*-------------------------------------------------
nvram_load - load a system's NVRAM
-------------------------------------------------*/
void nvram_load(running_machine &machine)
{
// only need to do something if we have an NVRAM device or an nvram_handler
device_nvram_interface *nvram = NULL;
if (!machine.devicelist().first(nvram) && machine.config().m_nvram_handler == NULL)
return;
// open the file; if it exists, call everyone to read from it
if (machine.config().m_nvram_handler != NULL)
{
astring filename;
emu_file file(machine.options().nvram_directory(), OPEN_FLAG_READ);
if (file.open(nvram_filename(machine,filename), ".nv") == FILERR_NONE)
if (file.open(nvram_filename(machine,filename),".nv") == FILERR_NONE)
{
// read data from general NVRAM handler first
if (machine.config().m_nvram_handler != NULL)
(*machine.config().m_nvram_handler)(machine, &file, FALSE);
// find all devices with NVRAM handlers, and read from them next
for (bool gotone = (nvram != NULL); gotone; gotone = nvram->next(nvram))
nvram->nvram_load(file);
file.close();
}
// otherwise, tell everyone to initialize their NVRAM areas
else
{
// initialize via the general NVRAM handler first
if (machine.config().m_nvram_handler != NULL)
(*machine.config().m_nvram_handler)(machine, NULL, FALSE);
}
}
// find all devices with NVRAM handlers, and read from them next
device_nvram_interface *nvram = NULL;
if (machine.devicelist().first(nvram))
{
for (bool gotone = (nvram != NULL); gotone; gotone = nvram->next(nvram))
{
astring filename;
emu_file file(machine.options().nvram_directory(), OPEN_FLAG_READ);
if (file.open(nvram_filename(nvram->device(),filename)) == FILERR_NONE)
{
nvram->nvram_load(file);
file.close();
}
else
{
nvram->nvram_reset();
}
}
}
}
@ -371,23 +390,30 @@ void nvram_load(running_machine &machine)
void nvram_save(running_machine &machine)
{
// only need to do something if we have an NVRAM device or an nvram_handler
device_nvram_interface *nvram = NULL;
if (!machine.devicelist().first(nvram) && machine.config().m_nvram_handler == NULL)
return;
// open the file; if it exists, call everyone to read from it
if (machine.config().m_nvram_handler != NULL)
{
astring filename;
emu_file file(machine.options().nvram_directory(), OPEN_FLAG_WRITE | OPEN_FLAG_CREATE | OPEN_FLAG_CREATE_PATHS);
if (file.open(nvram_filename(machine,filename), ".nv") == FILERR_NONE)
{
// write data via general NVRAM handler first
if (machine.config().m_nvram_handler != NULL)
(*machine.config().m_nvram_handler)(machine, &file, TRUE);
file.close();
}
}
// find all devices with NVRAM handlers, and tell them to write next
device_nvram_interface *nvram = NULL;
if (machine.devicelist().first(nvram))
{
for (bool gotone = (nvram != NULL); gotone; gotone = nvram->next(nvram))
{
astring filename;
emu_file file(machine.options().nvram_directory(), OPEN_FLAG_WRITE | OPEN_FLAG_CREATE | OPEN_FLAG_CREATE_PATHS);
if (file.open(nvram_filename(nvram->device(),filename)) == FILERR_NONE)
{
nvram->nvram_save(file);
file.close();
}
}
}
}