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Routines |
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Used by the routine at ReadControls.
Reads the controls from a Kempston joystick.
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| ReadKempstonJoystick | 57993 | IN A,(31) | Read the joystick, and start with none of the controls. | |
| 57995 | LD C,0 | |||
| 57997 | BIT 0,A | Set the control for right if the joystick is pushed right. | ||
| 57999 | JR Z,ReadKempstonJoystick_Left | |||
| 58001 | SET 1,C | |||
| ReadKempstonJoystick_Left | 58003 | BIT 1,A | Set the control for left if the joystick is pushed left. | |
| 58005 | JR Z,ReadKempstonJoystick_Down | |||
| 58007 | SET 0,C | |||
| ReadKempstonJoystick_Down | 58009 | BIT 2,A | Set the control for down if the joystick is pushed down. | |
| 58011 | JR Z,ReadKempstonJoystick_Forward | |||
| 58013 | SET 4,C | |||
| ReadKempstonJoystick_Forward | 58015 | BIT 3,A | Set the control for forward if the joystick is pushed up. | |
| 58017 | JR Z,ReadKempstonJoystick_Fire | |||
| 58019 | SET 2,C | |||
| ReadKempstonJoystick_Fire | 58021 | BIT 4,A | Set the control for fire if the fire button is pressed. | |
| 58023 | JR Z,ReadKempstonJoystick_ViewKey | |||
| 58025 | SET 3,C | |||
| ReadKempstonJoystick_ViewKey | 58027 | JP ReadViewKey | Jump to ReadViewKey to read the key for turning the view. | |
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View the equivalent code in;
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