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Routines |
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Used by the routine at 29733. The main entry point is used to make the telephone appear to vibrate as if ringing.
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28660 | LD HL,28722 | Point HL at the graphic data for the telephone when ringing (at 28722) | ||||||
28663 | NOP | |||||||
28664 | JR 28669 | |||||||
This entry point is also used by the routine at 29733 to make the telephone appear still (as between rings, or when not ringing).
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28666 | LD HL,28741 | Point HL at the graphic data for the telephone when not ringing (at 28741) | ||||||
28669 | LD DE,20654 | Point DE at the display file address of the top pixel row of the top-left tile of the telephone icon | ||||||
28672 | LD A,6 | Update the top six pixel rows of the top two tiles of the telephone icon | ||||||
28674 | LDI | |||||||
28676 | LDI | |||||||
28678 | DEC E | |||||||
28679 | DEC E | |||||||
28680 | INC D | |||||||
28681 | DEC A | |||||||
28682 | JR NZ,28674 | |||||||
28684 | LD A,(HL) | Update the bottom two pixel rows of the top-left tile of the telephone icon | ||||||
28685 | LD (DE),A | |||||||
28686 | INC L | |||||||
28687 | INC D | |||||||
28688 | LD A,(HL) | |||||||
28689 | LD (DE),A | |||||||
28690 | LD B,3 | There are three more pixel rows to update | ||||||
28692 | LD DE,20686 | Point DE at the display file address of the top pixel row of the bottom-left tile of the telephone icon | ||||||
28695 | INC L | Update the top three pixel rows of the bottom-left tile of the telephone icon | ||||||
28696 | LD A,(HL) | |||||||
28697 | LD (DE),A | |||||||
28698 | INC D | |||||||
28699 | DJNZ 28695 | |||||||
28701 | RET |
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