|
Routines |
| Prev: 75CA | Up: Map | Next: 75F6 |
|
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.
|
||||
| 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 | |||
| Prev: 75CA | Up: Map | Next: 75F6 |