Super Mario World
Address Decoder 74LS139 Spec. (two independent decoders in chip)
__ __
1G |01\/16| +5V
1A |02 15| 2G
1B |03 14| 2A
1Y0 |04 13| 2B
1Y1 |05 12| 2Y0
1Y2 |06 11| 2Y1
1Y3 |07 10| 2Y2
GND |08 09| 2Y3
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| INPUTS | OUTPUTS |
| ENABLE | SELECT | |
| G | A B | Y0 Y1 Y2 Y3 |
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| H | X X | H H H H |
| L | L L | L H H H |
| L | H L | H L H H |
| L | L H | H H L H |
| L | H H | H H H L |
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Datasheet - 74LS139
