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Routines |
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| PlayWave1 | F648 | PUSH BC | Stash the delay counter on the stack. | |||||||
| F649 | LD A,($5BD0) | Send *Active_BorderColour to the speaker port. | ||||||||
| F64C | LD BC,$FFFE | |||||||||
| F64F | OUT (C),A | |||||||||
| F651 | POP BC | Restore the delay counter from the stack. | ||||||||
| F652 | PUSH BC | Stash the delay counter on the stack. | ||||||||
| F653 | CALL Delay_Loop | Call Delay_Loop. | ||||||||
| F656 | LD A,($5BD0) | A=*Active_BorderColour. | ||||||||
| F659 | LD BC,$FFFE | BC=FFFE (C points to the speaker port). | ||||||||
| F65C | OR %00010000 | Turn on the speaker (set bit 4). | ||||||||
| F65E | OUT (C),A | Send A to port *C. | ||||||||
| F660 | POP BC | Restore the delay counter from the stack. | ||||||||
| F661 | PUSH BC | Stash the delay counter on the stack. | ||||||||
| F662 | CALL Delay_Loop | Call Delay_Loop. | ||||||||
| F665 | POP BC | Restore the delay counter from the stack. | ||||||||
| F666 | DEC DE | Decrease the duration counter by one. | ||||||||
| F667 | LD A,E | Keep looping back to PlayWave1 until the duration counter is zero. | ||||||||
| F668 | OR D | |||||||||
| F669 | JR NZ,PlayWave1 | |||||||||
| F66B | RET | Return. | ||||||||
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