Mahjong Vegas Dip Switch Settings

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The following are the Dip Switch settings based off of MAME 0.180 source code.

Use this information at your own risk! The information was parsed from the MAME source code and could contain errors as to the state, order or descriptions of what the switches do. If you find an error, please let me know on the Contact Us form and I will work on correcting the issue.

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Mahjong Vegas

Manufactured by Dynax, Released in 1991

ROM Version: Mahjong Vegas (Japan)

Dip Switch:DSW1

1	2	3	4	5	6	7	8	Function	Option
On	On	On	On					Pay Out Rate	50%
Off	On	On	On						53%
On	Off	On	On						56%
Off	Off	On	On						59%
On	On	Off	On						62%
Off	On	Off	On						65%
On	Off	Off	On						68%
Off	Off	Off	On						71%*
On	On	On	Off						75%
Off	On	On	Off						78%
On	Off	On	Off						81%
Off	Off	On	Off						84%
On	On	Off	Off						87%
Off	On	Off	Off						90%
On	Off	Off	Off						93%
Off	Off	Off	Off						96%

				Off	On			Odds Rate	1 2 3 5 10 25 50 100
				On	Off				1 2 3 5 10 50 100 200
				On	On				1 2 3 5 8 15 30 50
				Off	Off				1 2 4 8 12 16 24 32*

						Off	Off	Max Bet	1*
						Off	On		10
						On	On		20
						On	Off		5

Dip Switch:DSW2

1	2	3	4	5	6	7	8	Function	Option
Off	Off							Coin A	1 Coin/1 Credit*
On	On								1 Coin/10 Credits
On	Off								1 Coin/2 Credits
Off	On								1 Coin/5 Credits

		Off	Off					YAKUMAN Times	1*
		On	Off						2
		Off	On						3
		On	On						5

				On	Off	Off		YAKUMAN Bonus	100?
				On	Off	On			1000
				Off	On	On			1000
				On	On	On			1000
				Off	On	Off			300
				On	On	Off			500
				Off	Off	On			700
				Off	Off	Off			Cut*

							On	Unknown 2-7	1
							Off		2*

Dip Switch:DSW3

1	2	3	4	5	6	7	8	Function	Option
Off								Unknown 3-0	Off*
On									On

	Off							Unknown 3-1	Off*
	On								On

		Off						3 BAI In YAKUMAN Bonus Chance	Off*
		On							On

			Off					Unknown 3-3	Off*
			On						On

				Off				Unknown 3-4	Off*
				On					On

					Off			Unknown 3-5	Off*
					On				On

						Off		Unknown 3-6	Off*
						On			On

							Off	Unknown 3-7	Off*
							On		On

Dip Switch:DSW4

1	2	3	4	5	6	7	8	Function	Option
Off								Unknown 4-0	Off*
On									On

	Off							Show Clock	No*
	On								Yes

		Off						Girls	Off
		On							On*

			Off					Background	Black
			On						Green*

				Off				Demo Sounds	Off
				On					On*

					Off			Unknown 4-5	Off*
					On				On

						Off		Unknown 4-6	Off*
						On			On

							Off	Unknown 4-7	Off*
							On		On

Dip Switch:DSWTOP

1	2	3	4	5	6	7	8	Function	Option
On								Credits Per Note	10
Off									5*

	Off							Flip Screen	Off*
	On								On

		Off						Unknown 2-8	Off*
		On							On

			Off					Unknown 2-9	Off*
			On						On

				On				Flip-Flop Key	Flip-Flop
				Off					Start*

					On			Don Den Times	5
					Off				8*

						Off		Unknown 4-8	Off*
						On			On

							Off	Debug Mode	Off*
							On		On

ROM Version: Mahjong Vegas (Japan, unprotected)

Dip Switch:DSW1

1	2	3	4	5	6	7	8	Function	Option
On	On	On	On					Pay Out Rate	50%
Off	On	On	On						53%
On	Off	On	On						56%
Off	Off	On	On						59%
On	On	Off	On						62%
Off	On	Off	On						65%
On	Off	Off	On						68%
Off	Off	Off	On						71%*
On	On	On	Off						75%
Off	On	On	Off						78%
On	Off	On	Off						81%
Off	Off	On	Off						84%
On	On	Off	Off						87%
Off	On	Off	Off						90%
On	Off	Off	Off						93%
Off	Off	Off	Off						96%

				Off	On			Odds Rate	1 2 3 5 10 25 50 100
				On	Off				1 2 3 5 10 50 100 200
				On	On				1 2 3 5 8 15 30 50
				Off	Off				1 2 4 8 12 16 24 32*

						Off	Off	Max Bet	1*
						Off	On		10
						On	On		20
						On	Off		5

Dip Switch:DSW2

1	2	3	4	5	6	7	8	Function	Option
Off	Off							Coin A	1 Coin/1 Credit*
On	On								1 Coin/10 Credits
On	Off								1 Coin/2 Credits
Off	On								1 Coin/5 Credits

		Off	Off					YAKUMAN Times	1*
		On	Off						2
		Off	On						3
		On	On						5

				On	Off	Off		YAKUMAN Bonus	100?
				On	Off	On			1000
				Off	On	On			1000
				On	On	On			1000
				Off	On	Off			300
				On	On	Off			500
				Off	Off	On			700
				Off	Off	Off			Cut*

							On	Unknown 2-7	1
							Off		2*

Dip Switch:DSW3

1	2	3	4	5	6	7	8	Function	Option
Off								Unknown 3-0	Off*
On									On

	Off							Unknown 3-1	Off*
	On								On

		Off						3 BAI In YAKUMAN Bonus Chance	Off*
		On							On

			Off					Unknown 3-3	Off*
			On						On

				Off				Unknown 3-4	Off*
				On					On

					Off			Unknown 3-5	Off*
					On				On

						Off		Unknown 3-6	Off*
						On			On

							Off	Unknown 3-7	Off*
							On		On

Dip Switch:DSW4

1	2	3	4	5	6	7	8	Function	Option
Off								Unknown 4-0	Off*
On									On

	Off							Show Clock	No*
	On								Yes

		Off						Girls	Off
		On							On*

			Off					Background	Black
			On						Green*

				Off				Demo Sounds	Off
				On					On*

					Off			Unknown 4-5	Off*
					On				On

						Off		Unknown 4-6	Off*
						On			On

							Off	Unknown 4-7	Off*
							On		On

Dip Switch:DSWTOP

1	2	3	4	5	6	7	8	Function	Option
On								Credits Per Note	10
Off									5*

	Off							Flip Screen	Off*
	On								On

		Off						Unknown 2-8	Off*
		On							On

			Off					Unknown 2-9	Off*
			On						On

				On				Flip-Flop Key	Flip-Flop
				Off					Start*

					On			Don Den Times	5
					Off				8*

						Off		Unknown 4-8	Off*
						On			On

							Off	Debug Mode	Off*
							On		On