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Routines |
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Used by the routine at check_user_input.
The cursor keys on the number row: 5 left, 6 down, 7 up, 8 right, with 0 as fire.
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| cursor | D09C | LD C,$00 | half-row 1 to 5 | |
| D09E | LD A,$F7 | |||
| D0A0 | CALL read_port | |||
| D0A3 | BIT 4,A | 5 (left): bit 0 | ||
| D0A5 | JR Z,cursor_second_row | |||
| D0A7 | SET 0,C | |||
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