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path: root/map/loading/romtiles.gbasm
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Load_Block:
	PUSH BC
	PUSH AF

	PUSH AF
	LD A, $mem_dungeon_flags
	AND $01
	JP Z, =Load_Block_From_Solid.AF_AF_BC_Push
	POP AF

	.After_AF_BC_Push:

	CP $20
	JP NC, =Load_Block_From_Solid.AF_BC_Push

	PUSH BC
	LD C, A
	LD A, B
	CP $20
	LD A, C
	POP BC
	JP NC, =Load_Block_From_Solid.AF_BC_Push

Load_ROM_Block: ; X in A, Y in B
	PUSH DE
	PUSH HL

	LD C, A

	CALL =Construct_Tile_Address

	LD A, $mem_map_loading_flags
	SET 2, A
	LD $mem_map_loading_flags, A

	LD A, ($mem_rom_tilemap_addr+1)
	LD H, A
	LD A, ($mem_rom_tilemap_addr+2)
	LD L, A
	LD A, ($mem_rom_tilemap_addr)
	.CHANGE_BANK_TO_A

	SLA C
	SLA B
	LD A, $00
	SRA B
	RR A
	SRA B
	RR A
	OR C
	LD C, A

	LD A, L
	ADD C
	LD L, A
	LD A, H
	ADC B
	LD H, A

	LD A, D
	LD ($mem_prepared_block_position), A
	LD A, E
	LD ($mem_prepared_block_position+1), A

	LD A, (HL+)
	LD ($mem_prepared_block_tile), A
	LD A, (HL-)
	LD ($mem_prepared_block_tile+1), A

	LD A, L
	ADD $40
	LD L, A
	LD A, H
	ADC $00
	LD H, A

	LD A, (HL+)
	LD ($mem_prepared_block_tile+2), A
	LD A, (HL)
	LD ($mem_prepared_block_tile+3), A

	POP HL
	POP DE
	POP AF
	POP BC
	RET