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Routines |
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Used by the routine at D411.
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| Door_Prep_01 | D3EA | LD HL,$CE14 | Door_Routine_01 | |
| D3ED | XOR A | Sets A=0 to set the zero flag. | ||
| D3EE | LD B,$06 | Loop round six bytes (ie: 3 pointers). If all doors are closed, they will all contain 0000, and the zero flag will be kept. | ||
| Door_Prep_01_0 | D3F0 | OR (HL) | ||
| D3F1 | INC HL | |||
| D3F2 | DJNZ Door_Prep_01_0 | |||
| D3F4 | AND A | Are all the doors closed? | ||
| D3F5 | POP BC | If not, wind the stack back to do an early return from the calling routine at CAE7. | ||
| D3F6 | RET NZ | |||
| D3F7 | PUSH BC | Redo the stack. | ||
| D3F8 | LD HL,$D8AC | Change the random number seeds, so things happen differently from here on. | ||
| D3FB | INC (HL) | |||
| D3FC | LD DE,$0400 | Set up a pause interval (used by the calling routine at D411). | ||
| D3FF | CALL $D407 | Is the phase complete? | ||
| D402 | RET NC | No, so return. | ||
| D403 | POP AF | Wind the stack back to do an early return from the calling routine at Prep_Display_Phase. | ||
| D404 | POP AF | |||
| D405 | AND A | Clear the carry flag. | ||
| D406 | RET | |||
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