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documentations:devices:6821 [2015/03/01 17:45] – [MO System PIA] pulkomandy | documentations:devices:6821 [2015/03/01 17:53] – [Sound and Games PIA] pulkomandy | ||
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Available as an expansion for the TO7, TO7/70, TO9 and MO5, this is built-in for the other machines. | Available as an expansion for the TO7, TO7/70, TO9 and MO5, this is built-in for the other machines. | ||
+ | |||
+ | < | ||
=== Data port A === | === Data port A === | ||
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|PA6| | |Left | | |PA6| | |Left | | ||
|PA7| | |Right| | |PA7| | |Right| | ||
+ | |||
+ | < | ||
=== Data port B === | === Data port B === | ||
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|PB6|Joy0 button 1 |YA | | | |PB6|Joy0 button 1 |YA | | | ||
|PB7|Joy1 button 1 | | | | |PB7|Joy1 button 1 | | | | ||
+ | |||
+ | </ | ||
+ | |||
=== Control ports === | === Control ports === | ||
+ | The joystick buttons are wired both to port input pins and to control pins. This makes it possible to trigger interrupts on them, but read the complete joystick state for both joysticks on data ports A and B without having to also test the control ports. | ||
* CA1: Joy0 button 2 | * CA1: Joy0 button 2 | ||
* CA2: Joy0 button 1 | * CA2: Joy0 button 1 | ||
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* CB2: Joy1 button 1 | * CB2: Joy1 button 1 | ||
- | It is not possible to use the DAC and the joysticks at the same time! | + | It is not possible to use the DAC and the joysticks |
- | The sound output can be muted by using the 6846 buzzer output to force it low. | + | |
+ | The sound output | ||
===== Documents ===== | ===== Documents ===== | ||
* {{: | * {{: |