corona: check/end leds were wrong way around (nw)

src/devices/cpu/m6800/m6801.cpp

@@ -671,7 +671,7 @@ void m6801_cpu_device::execute_set_input(int irqline, int state)
 		if (state != m_irq_state[M6801_TIN_LINE])
 		{
 			m_irq_state[M6801_TIN_LINE] = state;
-			//eddge = (state == CLEAR_LINE ) ? 2 : 0;
+			//edge = (state == CLEAR_LINE ) ? 2 : 0;
 			if( ((m_tcsr&TCSR_IEDG) ^ (state==CLEAR_LINE ? TCSR_IEDG : 0))==0 )
 				return;
 			/* active edge in */

src/devices/cpu/m6800/m6801.h

@@ -12,10 +12,7 @@
 enum
 {
 	M6801_IRQ_LINE = M6800_IRQ_LINE,
-	M6801_TIN_LINE,                 /* P20/Tin Input Capture line (eddge sense)     */
+	M6801_TIN_LINE, // P20/Tin Input Capture line (edge sense). Active edge is selectable by internal reg.
-									/* Active eddge is selecrable by internal reg.  */
-									/* raise eddge : CLEAR_LINE  -> ASSERT_LINE     */
-									/* fall  eddge : ASSERT_LINE -> CLEAR_LINE      */
 	M6801_SC1_LINE
 };
 

src/mame/drivers/saitek_stratos.cpp

@@ -20,7 +20,7 @@ cold boot, press ACL, then hold the PLAY button and press GO.
 *******************************************************************************
 
 Hardware notes:
-- W65C02 or R65C02 at 5MHz or 5.67MHz (for latter, box says 6MHz but that's a marketing lie)
+- W65C02 or R65C02 at 5MHz or ~5.6MHz (for latter, box says 6MHz but that's a marketing lie)
 - 2*32KB ROM + optional 32KB Endgame ROM sold separately
 - 8KB RAM + another 8KB RAM(latter not populated on every PCB)
 - NEC gate array for all I/O, Saitek calls it HELIOS
@@ -31,6 +31,11 @@ Stratos/Turbo King are identical.
 Corona has magnet sensors and two HELIOS chips.
 Simultano has an extra LCD screen representing the chessboard state.
 
+There is no official Saitek program versioning for these. The D/D+ versions are known since
+they're the same chess engine as later Saitek modules, such as the Analyst module.
+Likewise, officially there isn't a "Turbo King II" or "Corona II", these 'sequels' are titled
+as such by the chesscomputer community. Saitek simply advertised them as an improved program.
+
 TODO:
 - emulate LCD at lower level, probably an MCU with embedded LCDC
 - add LCD 7*7 DMD, it's in m_lcd_data[0x30 to 0x3b] but scrambled
@@ -143,8 +148,10 @@ void saitek_stratos_state::machine_reset()
 
 void saitek_stratos_state::set_cpu_freq()
 {
-	// released with either 5MHz or 5.67MHz speeds
+	// known officially* released CPU speeds: 5MHz, 5.626MHz, 5.67MHz
-	m_maincpu->set_unscaled_clock((ioport("FAKE")->read() & 1) ? 5.67_MHz_XTAL : 5_MHz_XTAL);
+	// *not including reseller overclocks, user mods, or the "Turbo Kit"
+	u8 inp = ioport("FAKE")->read();
+	m_maincpu->set_unscaled_clock((inp & 2) ? 5.67_MHz_XTAL : ((inp & 1) ? 5.626_MHz_XTAL : 5_MHz_XTAL));
 }
 
 // stratos_state
@@ -449,9 +456,10 @@ INPUT_PORTS_START( saitek_stratos )
 	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_F1) PORT_CHANGED_MEMBER(DEVICE_SELF, saitek_stratos_state, acl_button, nullptr) PORT_NAME("ACL")
 
 	PORT_START("FAKE")
-	PORT_CONFNAME( 0x01, 0x00, "CPU Frequency" ) PORT_CHANGED_MEMBER(DEVICE_SELF, saitek_stratos_state, cpu_freq, nullptr) // factory set
+	PORT_CONFNAME( 0x03, 0x00, "CPU Frequency" ) PORT_CHANGED_MEMBER(DEVICE_SELF, saitek_stratos_state, cpu_freq, nullptr) // factory set
 	PORT_CONFSETTING(    0x00, "5MHz" )
-	PORT_CONFSETTING(    0x01, "5.67MHz" )
+	PORT_CONFSETTING(    0x01, "5.626MHz" )
+	PORT_CONFSETTING(    0x02, "5.67MHz" )
 INPUT_PORTS_END
 
 static INPUT_PORTS_START( stratos )
@@ -560,6 +568,6 @@ ROM_END
 CONS( 1986, stratos,  0,       0, stratos, stratos, stratos_state, empty_init, "SciSys", "Kasparov Stratos (set 1)", MACHINE_SUPPORTS_SAVE | MACHINE_IMPERFECT_GRAPHICS | MACHINE_CLICKABLE_ARTWORK )
 CONS( 1986, stratosa, stratos, 0, stratos, stratos, stratos_state, empty_init, "SciSys", "Kasparov Stratos (set 2)", MACHINE_SUPPORTS_SAVE | MACHINE_IMPERFECT_GRAPHICS | MACHINE_CLICKABLE_ARTWORK )
 
-CONS( 1990, tking,    0,       0, tking2,  tking2,  stratos_state, empty_init, "Saitek", "Kasparov Turbo King (set 1, ver. D)", MACHINE_SUPPORTS_SAVE | MACHINE_IMPERFECT_GRAPHICS | MACHINE_CLICKABLE_ARTWORK ) // aka Turbo King II
+CONS( 1988, tking,    0,       0, tking2,  tking2,  stratos_state, empty_init, "Saitek", "Kasparov Turbo King (set 1, ver. D)", MACHINE_SUPPORTS_SAVE | MACHINE_IMPERFECT_GRAPHICS | MACHINE_CLICKABLE_ARTWORK ) // aka Turbo King II
 CONS( 1988, tkinga,   tking,   0, stratos, stratos, stratos_state, empty_init, "Saitek", "Kasparov Turbo King (set 2)", MACHINE_SUPPORTS_SAVE | MACHINE_IMPERFECT_GRAPHICS | MACHINE_CLICKABLE_ARTWORK ) // oldest?
 CONS( 1988, tkingb,   tking,   0, stratos, stratos, stratos_state, empty_init, "Saitek", "Kasparov Turbo King (set 3)", MACHINE_SUPPORTS_SAVE | MACHINE_IMPERFECT_GRAPHICS | MACHINE_CLICKABLE_ARTWORK )

src/mame/layout/saitek_corona.lay

@@ -626,8 +626,8 @@
 
 		<element ref="ledr" name="2.1" blend="add"><bounds x="93" y="41" width="1.8" height="0.7" /></element>
 		<element ref="ledr" name="2.0" blend="add"><bounds x="93" y="46" width="1.8" height="0.7" /></element>
-		<element ref="ledr" name="0.0" blend="add"><bounds x="93" y="51" width="1.8" height="0.7" /></element>
+		<element ref="ledr" name="1.0" blend="add"><bounds x="93" y="51" width="1.8" height="0.7" /></element>
-		<element ref="ledr" name="1.0" blend="add"><bounds x="93" y="56" width="1.8" height="0.7" /></element>
+		<element ref="ledr" name="0.0" blend="add"><bounds x="93" y="56" width="1.8" height="0.7" /></element>
 
 		<element ref="ledg" name="0.1" blend="add"><bounds x="93" y="61" width="1.8" height="0.7" /></element>
 		<element ref="ledr" name="1.1" blend="add"><bounds x="93" y="61" width="1.8" height="0.7" /></element>