Routines
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7CAC: Take the next word of a noun phrase that is not empty
Used by the routine at MATCH_PATTERN.
Input
IY The frame
E The offset of the word in it
HL Where to put it
B How many words may still be taken
PICK_WORD 7CAC XOR A
7CAD CP B
7CAE RET Z
7CAF LD D,$00
7CB1 PUSH IY
7CB3 ADD IY,DE
7CB5 LD A,(IY+$00)
7CB8 LD (HL),A
7CB9 INC HL
7CBA LD A,(IY+$01)
7CBD LD (HL),A
7CBE DEC HL
7CBF OR (IY+$00)
7CC2 POP IY
7CC4 RET Z
7CC5 DEC B
7CC6 INC HL
7CC7 INC HL
7CC8 RET
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