void sam6883_device::sam_space<_addrstart, _addrend>::point_specific_bank(const sam_bank *bank, UINT16 offset, UINT16 mask, memory_bank *&memory_bank, INT32 addrstart, INT32 addrend, bool is_write)
{
char buffer[16];
if (bank->m_memory != nullptr)
{
// normalize offset
if (mask != 0)
offset &= mask;
// this bank is a memory bank - first ensure that we have a bank
if (!memory_bank || !memory_bank->matches_exactly(addrstart, addrend) || (mask != m_mask))
{
// name the bank
snprintf(buffer, ARRAY_LENGTH(buffer), "bank%04X_%c", addrstart, is_write ? 'w' : 'r');
// install it
if (is_write)
cpu_space().install_write_bank(addrstart, addrend, mask, 0, buffer);
else
cpu_space().install_read_bank(addrstart, addrend, mask, 0, buffer);
m_mask = mask;
// and get it
memory_bank = cpu_space().device().owner()->membank(buffer);
}
// point the bank
if (memory_bank != nullptr)
{
if (is_write && bank->m_memory_read_only)
memory_bank->set_base(m_owner.m_dummy);
else
memory_bank->set_base(bank->m_memory + offset);
}
}
else
{
// this bank uses handlers
assert((offset == 0) && (mask == 0)); // changes to the offset are not supported
if (is_write)
{
if (!bank->m_whandler.isnull())
cpu_space().install_write_handler(addrstart, addrend, 0, 0, bank->m_whandler);
}
else
{
if (!bank->m_rhandler.isnull())
cpu_space().install_read_handler(addrstart, addrend, 0, 0, bank->m_rhandler);
}
}
}
void sam6883_device::sam_space<_addrstart, _addrend>::point_specific_bank(const sam_bank *bank, uint32_t offset, uint32_t length, memory_bank *&memory_bank, uint32_t addrstart, uint32_t addrend, bool is_write)
{
if (bank->m_memory != nullptr)
{
// this bank is a memory bank - first lets adjust the length as per the offset; as
// passed to this method, the length is from offset zero
if (length != ~0)
length -= std::min(offset, length);
// do we even have a bank? and if so, have legit changes occured?
if (!memory_bank || !memory_bank->matches_exactly(addrstart, addrend) || (length != m_length))
{
// name the bank
auto tag = string_format("bank%04X_%c", addrstart, is_write ? 'w' : 'r');
// determine "nop_addrstart" - where the bank ends, and above which is AM_NOP
uint32_t nop_addrstart = (length != ~0)
? std::min(addrend + 1, addrstart + length)
: addrend + 1;
// install the bank
if (is_write)
{
if (addrstart < nop_addrstart)
cpu_space().install_write_bank(addrstart, nop_addrstart - 1, 0, tag.c_str());
if (nop_addrstart <= addrend)
cpu_space().nop_write(nop_addrstart, addrend);
}
else
{
if (addrstart < nop_addrstart)
cpu_space().install_read_bank(addrstart, nop_addrstart - 1, 0, tag.c_str());
if (nop_addrstart <= addrend)
cpu_space().nop_read(nop_addrstart, addrend);
}
m_length = length;
// and get it
memory_bank = cpu_space().device().owner()->membank(tag.c_str());
}
// point the bank
if (memory_bank != nullptr)
{
if (is_write && bank->m_memory_read_only)
memory_bank->set_base(m_owner.m_dummy);
else
memory_bank->set_base(bank->m_memory + offset);
}
}
else
{
// this bank uses handlers - first thing's first, assert that we are not doing
// any weird stuff with offfsets and lengths - that isn't supported in this path
assert((offset == 0) && (length == (uint32_t)~0));
if (is_write)
{
if (!bank->m_whandler.isnull())
cpu_space().install_write_handler(addrstart, addrend, bank->m_whandler);
}
else
{
if (!bank->m_rhandler.isnull())
cpu_space().install_read_handler(addrstart, addrend, bank->m_rhandler);
}
}
}
