The first two digits Indicate code type 0x02 is used for 16-bit write on AR V3; 0x83 for GS. From what I've come to discover, my previous codes use a variation of absolute RAM addresses. Whereas your Ruby GS codes use adresses in WRAM + some offset. Basically mine were referencing the absolute address 0x020242DA (FireRed 1st pokemon HP) Yours were referencing address 0x02020000 (start of WRAM) + 0x4eb8 (Offset of equivalent Ruby location).