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Routines |
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Used by the routine at 6EC5. Returns with the interval in A, which indicates the minimum number of subintervals of 0.64s that the current message should be displayed for.
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75D0 | LD A,($75C9) | Collect the urgent message number from 75C9 | ||||||
75D3 | AND A | Is it 0 (no message)? | ||||||
75D4 | JR Z,$75F2 | Jump if so | ||||||
75D6 | LD HL,$7FB7 | Collect the index of the current message in the queue from 7FB7 | ||||||
75D9 | LD A,(HL) | |||||||
75DA | INC A | A=index of the next message in the queue | ||||||
75DB | AND $07 | |||||||
75DD | ADD A,$B8 | Point HL at the slot for the next message in the queue | ||||||
75DF | LD L,A | |||||||
75E0 | LD B,$07 | There are up to 7 messages ahead in the queue | ||||||
75E2 | LD A,($75C9) | A=urgent message number | ||||||
75E5 | CP (HL) | Set the zero flag if the urgent message is in this slot in the queue | ||||||
75E6 | INC HL | Move HL along to the next slot in the message queue (or past the end of the queue and into the bullet buffers at 7FC0 and 7FC4, which is a bug) | ||||||
75E7 | JR NZ,$75EC | Jump unless the urgent message is at this position in the queue | ||||||
75E9 | LD A,$01 | Set A=1 so that the next message is displayed as soon as possible | ||||||
75EB | RET | |||||||
75EC | DJNZ $75E5 | Jump back until all messages in the queue have been checked | ||||||
75EE | XOR A | Clear the urgent message number at 75C9: it was not in the queue | ||||||
75EF | LD ($75C9),A | |||||||
75F2 | LD A,($6FC4) | Collect the normal message display interval from 6FC4 | ||||||
75F5 | RET |
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