$ECF0/60656:   Low Byte Screen Line Addresses

ECF0: 00 28 50 78 A0 C8 F0 18
ECF8: 40 68 90 B8 E0 08 30 58
ED00: 80 A8 D0 F8 20 48 70 98
ED08: C0

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Kernal-Reference:

 LDA $ECF0,X : $E9F0

 LDA $ECF1,X : $E907