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Routines |
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Used by the routines at SortDrawList and DrawOtherItemFirst.
Moves the item under consideration to the sorted list, marks it as moved in the draw list, and starts again with the first item that has not been moved.
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| MoveItemToSortedList | A179 | LD DE,$0000 | Point DE at the next free place in the sorted list (the address is stored in the operand of this instruction, A17A). | |
| A17C | LD HL,($A1AE) | Fetch the address of the entry after the item under consideration. | ||
| A17F | DEC HL | Move back to the start of the entry... | ||
| A180 | DEC HL | ...in the draw list... | ||
| A181 | DEC HL | ...which is three bytes. | ||
| A182 | LD A,(HL) | Fetch the flags of the item. | ||
| A183 | SET 7,(HL) | Mark it as moved in the draw list. | ||
| A185 | LD (DE),A | Store the flags in the sorted list. | ||
| A186 | INC HL | Move onto the address of the record. | ||
| A187 | INC DE | Move onto the next place in the sorted list. | ||
| A188 | LDI | Copy the first byte of the address of the record. | ||
| A18A | LDI | Copy the second byte. | ||
| A18C | LD ($A17A),DE | Store the address of the next free place in the sorted list. | ||
| A190 | LD A,$FF | Set the end marker of the list of items which have been tried. | ||
| A192 | LD ($A19E),A | Store it at the start of the list. | ||
| A195 | JP SortDrawList_Next | Jump to 9F9F to find the next item. | ||
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