MOS 6581 0384 KOREA AH513558
MOS 6581 1984 KOREA AH115102 (54)
MOS 6581 CBM 3684 TAIWAN GH335554 2 (A/42)
MOS 6581R3 3985 KOREA AH383856 3 (76)
MOS 6581R4AR 2286 S HONG KONG HH205105 HC-30 (59)