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28064: Set brickwork direction mode to vertical and reset pointers to beginning of display
Used by the routine at 27865.
28064 PUSH HL Store HL (pointer to current position in current room data)
28065 LD A,1 Set brickwork-drawing-direction flag to 1 (vertical mode for walls)...
28067 LD (23476),A ...
28070 LD HL,16384 Point HL to start of display file
28073 LD (36488),HL Load HL into memory location to start printing character
28076 LD HL,22528 Point HL to start of attribute file
28079 LD (23487),HL Update virtual text cursor (attribute) position to 0, 0
28082 LD HL,24539 Set terrain interaction table cursor to point to start of terrain interaction data...
28085 LD (23481),HL ...
28088 POP HL Restore HL (pointer to current position in current room data)
28089 JP 28056 Return to room drawing routine, setting brickwork drawing mode to two rows (so walls don't have holes in them!)
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