MC68020 Motorola, MC68020 Datasheet - Page 229

• Manufacturer Part Number: MC68020
• Description: (MC68020 / MC68EC020) MICROPROCESSORS USERS MANUAL
• Manufacturer: Motorola

B = Base address; 0, An, PC, Xn, An + Xn. Form does not affect timing.
I
NOTE: Xn cannot be in B and I at the same time. Scaling and size of Xn do not affect timing.
MOTOROLA
#<data >.W,([B],I,d 32 )
#<data >.L,([d 16 ,B],I,d 32 )
#<data >.W,([d 16 ,B],I)
#<data >.L,([d 16 ,B],I)
#<data >.W,([d 16 ,B],I,d 16 )
#<data >.L,([d 16 ,B],I,d 16 )
#<data >.W,([d 32 ,B],I)
#<data >.L,([d 32 ,B],I)
#<data >.W,([d 32 ,B],I,d 16 )
#<data >.L,([d 32 ,B],I,d 16 )
#<data >.W,([d 32 ,b],I,d 32 )
#<data >.L,([d 32 ,b],I,d 32 )
= Index; 0, Xn
Address Mode
M68020 USER’S MANUAL
Best Case
11(2/0/0)
12(2/0/0)
11(2/0/0)
12(2/0/0)
13(2/0/0)
14(2/0/0)
15(2/0/0)
16(2/0/0)
17(2/0/0)
18(2/0/0)
17(2/0/0)
18(2/0/0)
Cache Case
16(2/0/0)
18(2/0/0)
16(2/0/0)
18(2/0/0)
18(2/0/0)
20(2/0/0)
20(2/0/0)
22(2/0/0)
22(2/0/0)
24(2/0/0)
22(2/0/0)
24(2/0/0)
Worst Case
20(2/2/0)
22(2/3/0)
19(2/2/0)
21(2/2/0)
22(2/2/0)
24(2/3/0)
23(2/3/0)
25(2/3/0)
25(2/3/0)
27(2/3/0)
27(2/3/0)
29(2/4/0)
8- 15