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Routines |
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Used by the routine at 38562. Returns with the zero flag reset if ENTER, 0 or the fire button on the joystick is being pressed.
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| 38601 | LD A,(34254) | Collect the Kempston joystick indicator from 34254 | ||
| 38604 | OR A | Is the joystick connected? | ||
| 38605 | JR Z,38612 | Jump if not | ||
| 38607 | IN A,(31) | Collect input from the joystick | ||
| 38609 | BIT 4,A | Is the fire button being pressed? | ||
| 38611 | RET NZ | Return (with the zero flag reset) if so | ||
| 38612 | LD BC,45054 | Read keys H-J-K-L-ENTER and 6-7-8-9-0 | ||
| 38615 | IN A,(C) | |||
| 38617 | AND 1 | Keep only bit 0 of the result (ENTER, 0) | ||
| 38619 | CP 1 | Reset the zero flag if ENTER or 0 is being pressed | ||
| 38621 | RET | |||
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