Routines
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B503: Get Room Pointer
Used by the routines at HandlerDisplayRoomExits and Action_Down.
Point at the current room's six exit bytes.
Output
HL Pointer to the room data
GetRoomPointer B503 LD A,($AECD) Read the current room into A.
B506 LD E,A Turn the room number into an offset of six bytes in the room map.
B507 LD D,$00
B509 LD H,D
B50A LD L,E
B50B ADD HL,DE
B50C ADD HL,DE
B50D ADD HL,DE
B50E ADD HL,DE
B50F ADD HL,DE
B510 LD DE,($AED4) Load the register pair from the room-map pointer.
B514 ADD HL,DE Point at this room's exits.
B515 RET Return.
View the equivalent code in;
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