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Routines |
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| VisitRoom | 9D23 | LD A,(IX+$01) | C=IX+01 (current location). | |
| 9D26 | LD C,A | |||
| 9D27 | RRCA | |||
| 9D28 | RRCA | |||
| 9D29 | RRCA | |||
| 9D2A | AND %00011111 | Keep only bits 0-4. | ||
| 9D2C | LD L,A | Create an offset in HL. | ||
| 9D2D | LD H,$00 | |||
| 9D2F | LD A,C | A=IX+01 (current location). | ||
| 9D30 | RLCA | |||
| 9D31 | RLCA | |||
| 9D32 | RLCA | |||
| 9D33 | AND %00111000 | Keep only bits 3-5. | ||
| 9D35 | OR %11000110 | Set bits 1-2, 6-7. | ||
| 9D37 | LD ($9D3F),A | Write this value to 9D3F which updates the bit to set. | ||
| 9D3A | LD BC,$96BF | HL=VisitedRooms+BC. | ||
| 9D3D | ADD HL,BC | |||
| 9D3E | SET 0,(HL) | With above, set the bit to mark the room as having been visited. | ||
| 9D40 | RET | Return. | ||
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View the equivalent code in;
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