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// license:BSD-3-Clause
// copyright-holders:Juergen Buchmueller
/*****************************************************************************
*
* Xerox AltoII display vertical task
*
*****************************************************************************/
#include "alto2cpu.h"
/**
* @brief f1_dvt_block early: disable the display word task
*/
void alto2_cpu_device::f1_early_dvt_block()
{
// m_task_wakeup &= ~(1 << m_task);
LOG((this,LOG_DVT,2," BLOCK %s\n", task_name(m_task)));
}
/**
* @brief called by the CPU when the display vertical task becomes active
*/
void alto2_cpu_device::activate_dvt()
{
m_task_wakeup &= ~(1 << m_task);
}
/**
* @brief initialize display vertical task
*/
void alto2_cpu_device::init_dvt(int task)
{
set_f1(task, f1_block, &alto2_cpu_device::f1_early_dvt_block, nullptr);
set_f2(task, f2_dvt_evenfield, nullptr, &alto2_cpu_device::f2_late_evenfield);
m_active_callback[task] = &alto2_cpu_device::activate_dvt;
}
void alto2_cpu_device::exit_dvt()
{
// nothing to do yet
}
void alto2_cpu_device::reset_dvt()
{
// nothing to do yet
}
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