Routines
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B37F: Copy tile graphic into room graphic data
Used by the routine at B384.
B37F LD SP,($A22E) Recover SP
B383 RET
Copy tile graphic into room graphic data. Used by the routines at 9470 and A939.
B384 LD ($A22E),SP Save SP to temporal variable A095
B388 LD SP,$D962 Set SP to point to base address for mapping table of tile graphics and room graphic buffer
B38B POP HL Point HL to the address in the room graphic buffer for the tile
B38C POP DE Point DE to the tile graphics address
B38D LD A,L Jump back and return from routine if LSB of HL is $FF (end marker)
B38E INC A
B38F JP Z,$B37F
B392 LD BC,$0020 Set BC to the increment in room graphics buffer of every byte copied Copy the eight bytes of the tile graphics data to the corresponent room graphic buffer location
B395 LD A,(DE) Copy byte 1, increment tile graphics address and room graphics address
B396 LD (HL),A
B397 INC DE
B398 ADD HL,BC
B399 LD A,(DE) Copy byte 2, increment tile graphics address and room graphics address
B39A LD (HL),A
B39B INC DE
B39C ADD HL,BC
B39D LD A,(DE) Copy byte 3, increment tile graphics address and room graphics address
B39E LD (HL),A
B39F INC DE
B3A0 ADD HL,BC
B3A1 LD A,(DE) Copy byte 4, increment tile graphics address and room graphics address
B3A2 LD (HL),A
B3A3 INC DE
B3A4 ADD HL,BC
B3A5 LD A,(DE) Copy byte 5, increment tile graphics address and room graphics address
B3A6 LD (HL),A
B3A7 INC DE
B3A8 ADD HL,BC
B3A9 LD A,(DE) Copy byte 6, increment tile graphics address and room graphics address
B3AA LD (HL),A
B3AB INC DE
B3AC ADD HL,BC
B3AD LD A,(DE) Copy byte 7, increment tile graphics address and room graphics address
B3AE LD (HL),A
B3AF INC DE
B3B0 ADD HL,BC
B3B1 LD A,(DE) Copy byte 8, increment tile graphics address and room graphics address
B3B2 LD (HL),A
B3B3 INC DE
B3B4 ADD HL,BC
B3B5 JP $B38B Jump back and copy the next tile
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