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millfork/docs/stdlib/gb.md

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2019-07-15 12:21:50 +00:00
[< back to index](../doc_index.md)
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# Game Boyoriented modules
## gb_hardware
The `gb_hardware` module is imported automatically on Game Boy targets.
TODO
## gb_header_small
The `gb_header_small` module is imported automatically on small Game Boy targets.
It contains the default header for 32K Game Boy programs.
## gb_joy
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Provides an interface for reading joypads that is compatible with the [`joy` module](./joy.md).
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#### `alias input_a = input_btn`
1 if A button pressed, 0 id not pressed.
#### `byte input_b`
1 if B button pressed, 0 id not pressed.
#### `byte input_select`
1 if Select button pressed, 0 id not pressed.
#### `byte input_start`
1 if Start button pressed, 0 id not pressed.
#### `void read_joy()`
Reads the joypad.