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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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98
src/emu/machine/generic.c
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@ -326,41 +326,60 @@ static astring nvram_filename(running_machine &machine, astring &result)
return 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 nvram_load - load a system's NVRAM
-------------------------------------------------*/ -------------------------------------------------*/
void nvram_load(running_machine &machine) void nvram_load(running_machine &machine)
{ {
// only need to do something if we have an NVRAM device or an nvram_handler if (machine.config().m_nvram_handler != NULL)
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
astring filename;
emu_file file(machine.options().nvram_directory(), OPEN_FLAG_READ);
if (file.open(nvram_filename(machine,filename), ".nv") == FILERR_NONE)
{ {
// read data from general NVRAM handler first astring filename;
if (machine.config().m_nvram_handler != NULL) emu_file file(machine.options().nvram_directory(), OPEN_FLAG_READ);
if (file.open(nvram_filename(machine,filename),".nv") == FILERR_NONE)
{
(*machine.config().m_nvram_handler)(machine, &file, FALSE); (*machine.config().m_nvram_handler)(machine, &file, FALSE);
file.close();
// find all devices with NVRAM handlers, and read from them next }
for (bool gotone = (nvram != NULL); gotone; gotone = nvram->next(nvram)) else
nvram->nvram_load(file); {
(*machine.config().m_nvram_handler)(machine, NULL, FALSE);
}
} }
// otherwise, tell everyone to initialize their NVRAM areas device_nvram_interface *nvram = NULL;
else if (machine.devicelist().first(nvram))
{ {
// 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
for (bool gotone = (nvram != NULL); gotone; gotone = nvram->next(nvram)) for (bool gotone = (nvram != NULL); gotone; gotone = nvram->next(nvram))
nvram->nvram_reset(); {
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) void nvram_save(running_machine &machine)
{ {
// only need to do something if we have an NVRAM device or an nvram_handler if (machine.config().m_nvram_handler != NULL)
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
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 astring filename;
if (machine.config().m_nvram_handler != NULL) 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)
{
(*machine.config().m_nvram_handler)(machine, &file, TRUE); (*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)) for (bool gotone = (nvram != NULL); gotone; gotone = nvram->next(nvram))
nvram->nvram_save(file); {
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();
}
}
} }
} }