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7046: Set XOR blending mode for sprite rendering
Modifies sprite rendering code via self-modifying instructions. Patches sprite_draw_op with XOR B and sprite_erase_op with NOP to enable XOR blending mode for fighters/tanks.
blending_mode_xor_nop 7046 LD A,$A8 Patch OPCODE_XOR_B into sprite_draw_op and OPCODE_NOP into sprite_erase_op for XOR rendering.
7048 LD ($8C3C),A
704B LD A,$00
704D LD ($8C1B),A
7050 RET
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