Motorola MC68020 - Page 233

8- 18 M68020 USER’S MANUAL MOTOROLA
Address Mode Best Case Cache Case Worst Case
#<data>.L,([d
16
,B],I,d
16
) 13(1/0/0) 19(1/0/0) 23(1/3/0)
#<data>.([d
16
,B],I,d
32
) 12(1/0/0) 17(1/0/0) 22(1/3/0)
#<data>.([d
16
,B],I,d
32
) 13(1/0/0) 19(1/0/0) 24(1/3/0)
#<data>.W,([d
32
,B],I) 14(1/0/0) 19(1/0/0) 22(1/3/0)
#<data>.L,([d
32
,B],I) 15(1/0/0) 21(1/0/0) 24(1/3/0)
#<data>.W,([d
32
,B],I,d
16
) 16(1/0/0) 21(1/0/0) 24(1/3/0)
#<data>.L,([d
32
,B],I,d
16
) 17(1/0/0) 23(1/0/0) 26(1/3/0)
#<data>.W,([d
32
,B],I,d
32
) 16(1/0/0) 21(1/0/0) 24(1/3/0)
#<data>.L,([d
32
,B],I,d
32
) 17(1/0/0) 23(1/0/0) 29(1/4/0)
B = Base address; 0, An, PC, Xn, An + Xn. Form does not affect timing.
I = Index; 0, Xn
NOTE: Xn cannot be in B and I at the same time. Scaling and size of Xn do not affect timing.