Routines
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30972: Check whether a message is in the message queue
Used by the routines at 24832, 24951 and 30989. Returns with the zero flag set if the message whose number is stored at 32722 is present in the message queue (meaning it is currently being displayed or has yet to be displayed).
30972 CALL 28404 Update the message line and process the message queue as appropriate
This entry point is used by the routine at 31126.
30975 LD HL,32722 Collect the message number stored at 32722
30978 LD A,(HL)
30979 LD B,8 There are 8 slots in the message queue
30981 LD L,184 HL=32696 (the first byte in the message queue)
30983 CP (HL) Set the zero flag if the message number is in the queue
30984 INC HL Point HL at the next byte in the message queue
30985 RET Z Return if the message whose number is stored at 32722 is in the message queue
30986 DJNZ 30983 Jump back until all 8 bytes of the message queue have been checked
30988 RET
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