C++ (Cpp) segmented_mode Examples

Example #1

File: z8000.cpp Project: goofwear/mame

uint32_t z8002_device::get_raw_addr_operand(int opnum)
{
	int i;

	for (i = 0; i < opnum; i++)
	{
		assert (m_op_valid & (1 << i));
	}

	if (! (m_op_valid & (1 << opnum)))
	{
		uint32_t seg = m_program->read_word(m_pc);
		m_pc += 2;
		if (segmented_mode())
		{
			if (seg & 0x8000)
			{
				m_op[opnum] = (seg << 16) | m_program->read_word(m_pc);
				m_pc += 2;
			}
			else
				m_op[opnum] = (seg << 16) | (seg & 0xff);
		}
		else
			m_op[opnum] = seg;
		m_op_valid |= (1 << opnum);
	}
	return m_op[opnum];
}

Example #2

File: z8000.c Project: Ilgrim/MAMEHub

INLINE UINT32 get_raw_addr_operand (z8000_state *cpustate, int opnum)
{
	int i;
	assert (cpustate->device->type() == Z8001 || cpustate->device->type() == Z8002);

	for (i = 0; i < opnum; i++)
		assert (cpustate->op_valid & (1 << i));

	if (! (cpustate->op_valid & (1 << opnum)))
	{
		UINT32 seg = cpustate->program->read_word(cpustate->pc);
		cpustate->pc += 2;
		if (segmented_mode(cpustate))
		{
			if (seg & 0x8000)
			{
				cpustate->op[opnum] = (seg << 16) | cpustate->program->read_word(cpustate->pc);
				cpustate->pc += 2;
			}
			else
				cpustate->op[opnum] = (seg << 16) | (seg & 0xff);
		}
		else
			cpustate->op[opnum] = seg;
		cpustate->op_valid |= (1 << opnum);
	}
	return cpustate->op[opnum];
}