Routines
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8745: Find the next candidate instrument for which the action works
As 86ED, for the instrument.
8745 LD HL,$8339 HL = the instrument's own collected words
8748 CALL $86BA Search for the next object or room that fits them
874B CP $FF
874D RET Z None left: give up
874E LD ($B5DA),A Found one: it becomes the instrument, provisionally
8751 LD HL,$832F
8754 SET 1,(HL) Remember we are still searching
8756 CALL $84DE Would the whole action work with this instrument?
8759 JR Z,$8745 No: try the next candidate
875B RET Yes: this is a workable candidate
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