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Routines |
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Used by the routine at ReadControls.
Reads the Kempston joystick. The bits are flipped so that they are the same as those which are returned by ReadControls.
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| ReadKempstonJoystick | 6FB0 | IN A,($1F) | Fetch the state of the Kempston joystick. | |||||
| 6FB2 | CPL | Flip the bits, to match the keyboard (a zero bit means pressed). | ||||||
| 6FB3 | RET | Return. | ||||||
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View the equivalent code in;
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