fixed one-shot paddle timers in Apple II and clones (#8504)

src/mame/drivers/agat.cpp

@@ -584,13 +584,27 @@ uint8_t agat_base_state::controller_strobe_r()
 }
 
 void agat_base_state::controller_strobe_w(uint8_t data)
+{
+	// 555 monostable one-shot timers; a running timer cannot be restarted
+	if (machine().time().as_double() >= m_joystick_x1_time) 
 	{
 		m_joystick_x1_time = machine().time().as_double() + m_x_calibration * m_joy1x->read();
+	}
+	if (machine().time().as_double() >= m_joystick_y1_time) 
+	{
 		m_joystick_y1_time = machine().time().as_double() + m_y_calibration * m_joy1y->read();
+	}
+	if (machine().time().as_double() >= m_joystick_x2_time) 
+	{
 		m_joystick_x2_time = machine().time().as_double() + m_x_calibration * m_joy2x->read();
+	}
+	if (machine().time().as_double() >= m_joystick_y2_time) 
+	{
 		m_joystick_y2_time = machine().time().as_double() + m_y_calibration * m_joy2y->read();
 	}
 
+}
+
 uint8_t agat_base_state::c080_r(offs_t offset)
 {
 	if (!machine().side_effects_disabled())

src/mame/drivers/apple2.cpp

@@ -676,13 +676,27 @@ u8 apple2_state::controller_strobe_r()
 }
 
 void apple2_state::controller_strobe_w(u8 data)
+{
+	// 558 monostable one-shot timers; a running timer cannot be restarted
+	if (machine().time().as_double() >= m_joystick_x1_time) 
 	{
 		m_joystick_x1_time = machine().time().as_double() + m_x_calibration * m_gameio->pdl0_r();
+	}
+	if (machine().time().as_double() >= m_joystick_y1_time) 
+	{
 		m_joystick_y1_time = machine().time().as_double() + m_y_calibration * m_gameio->pdl1_r();
+	}
+	if (machine().time().as_double() >= m_joystick_x2_time) 
+	{
 		m_joystick_x2_time = machine().time().as_double() + m_x_calibration * m_gameio->pdl2_r();
+	}
+	if (machine().time().as_double() >= m_joystick_y2_time) 
+	{
 		m_joystick_y2_time = machine().time().as_double() + m_y_calibration * m_gameio->pdl3_r();
 	}
 
+}
+
 u8 apple2_state::c080_r(offs_t offset)
 {
 	if(!machine().side_effects_disabled())

src/mame/drivers/apple2e.cpp

@@ -1903,10 +1903,23 @@ void apple2e_state::do_io(int offset, bool is_iic)
 				accel_normal_speed();
 			}
 
+			// 558 monostable one-shot timers; a running timer cannot be restarted
+			if (machine().time().as_double() >= m_joystick_x1_time) 
+			{
 				m_joystick_x1_time = machine().time().as_double() + m_x_calibration * m_gameio->pdl0_r();
+			}
+			if (machine().time().as_double() >= m_joystick_y1_time) 
+			{
 				m_joystick_y1_time = machine().time().as_double() + m_y_calibration * m_gameio->pdl1_r();
+			}
+			if (machine().time().as_double() >= m_joystick_x2_time) 
+			{
 				m_joystick_x2_time = machine().time().as_double() + m_x_calibration * m_gameio->pdl2_r();
+			}
+			if (machine().time().as_double() >= m_joystick_y2_time) 
+			{
 				m_joystick_y2_time = machine().time().as_double() + m_y_calibration * m_gameio->pdl3_r();
+			}
 			break;
 
 		default:

src/mame/drivers/apple2gs.cpp

@@ -2187,10 +2187,23 @@ void apple2gs_state::do_io(int offset)
 				accel_normal_speed();
 			}
 
+			// 558 monostable one-shot timers; a running timer cannot be restarted
+			if (machine().time().as_double() >= m_joystick_x1_time) 
+			{
 				m_joystick_x1_time = machine().time().as_double() + m_x_calibration * m_gameio->pdl0_r();
+			}
+			if (machine().time().as_double() >= m_joystick_y1_time) 
+			{
 				m_joystick_y1_time = machine().time().as_double() + m_y_calibration * m_gameio->pdl1_r();
+			}
+			if (machine().time().as_double() >= m_joystick_x2_time) 
+			{
 				m_joystick_x2_time = machine().time().as_double() + m_x_calibration * m_gameio->pdl2_r();
+			}
+			if (machine().time().as_double() >= m_joystick_y2_time) 
+			{
 				m_joystick_y2_time = machine().time().as_double() + m_y_calibration * m_gameio->pdl3_r();
+			}
 			break;
 
 		default:
@@ -2627,12 +2640,26 @@ u8 apple2gs_state::c000_r(offs_t offset)
 					accel_normal_speed();
 				}
 
+				// 558 monostable one-shot timers; a running timer cannot be restarted
+				if (machine().time().as_double() >= m_joystick_x1_time) 
+				{
 					m_joystick_x1_time = machine().time().as_double() + m_x_calibration * m_gameio->pdl0_r();
+				}
+				if (machine().time().as_double() >= m_joystick_y1_time) 
+				{
 					m_joystick_y1_time = machine().time().as_double() + m_y_calibration * m_gameio->pdl1_r();
+				}
+				if (machine().time().as_double() >= m_joystick_x2_time) 
+				{
 					m_joystick_x2_time = machine().time().as_double() + m_x_calibration * m_gameio->pdl2_r();
+				}
+				if (machine().time().as_double() >= m_joystick_y2_time) 
+				{
 					m_joystick_y2_time = machine().time().as_double() + m_y_calibration * m_gameio->pdl3_r();
 				}
 
+			}
+
 			return m_rom[offset + 0x3c000];
 			break;