MC68020 Motorola, MC68020 Datasheet - Page 253
MC68020
Manufacturer Part Number
MC68020
Description
(MC68020 / MC68EC020) MICROPROCESSORS USERS MANUAL
Manufacturer
Motorola
Datasheet
1.MC68020.pdf
(306 pages)
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8.2.17 Exception-Related Instructions
The exception-related instructions table indicates the number of clock periods needed for
the processor to perform the specified exception-related action. Footnotes specify when it
is necessary to add the entry from another table to calculate the total effective execution
time for the given instruction. The total number of clock cycles is outside the parentheses;
the number of read, prefetch, and write cycles is given inside the parentheses as (r/p/w).
These cycles are included in the total clock cycle number.
MOTOROLA
BKPT
Interrupt (I-Stack)
Interrupt (M-Stack)
RESET Instruction
STOP
Trace
TRAP #n
Illegal Instruction
A-Line Trap
F-Line Trap
Privilege Violation
TRAPcc (Trap)
TRAPcc (No Trap)
TRAPcc.W (Trap)
TRAPcc.W (No Trap)
TRAPcc.L (Trap)
TRAPcc.L (No Trap)
TRAPV (Trap)
TRAPV (No Trap)
Instruction
M68020 USER’S MANUAL
Best Case
518(0/0/0)
26(2/0/4)
41(2/0/8)
25(1/0/5)
20(1/0/4)
20(1/0/4)
20(1/0/4)
20(1/0/4)
20(1/0/4)
23(1/0/5)
23(1/0/5)
23(1/0/5)
23(1/0/5)
9(1/0/0)
8(0/0/0)
1(0/0/0)
3(0/0/0)
5(0/0/0)
1(0/0/0)
Cache Case
518(0/0/0)
10(1/0/0)
26(2/0/4)
41(2/0/8)
25(1/0/5)
20(1/0/4)
20(1/0/4)
20(1/0/4)
20(1/0/4)
20(1/0/4)
25(1/0/5)
25(1/0/5)
25(1/0/5)
25(1/0/5)
8(0/0/0)
4(0/0/0)
6(0/0/0)
8(0/0/0)
4(0/0/0)
Worst Case
519(0/1/0)
10(1/0/0)
33(2/2/4)
48(2/2/8)
32(1/2/5)
27(1/2/4)
27(1/2/4)
27(1/2/4)
27(1/2/4)
27(1/2/4)
32(1/2/5)
33(1/3/5)
33(1/3/5)
10(0/2/0)
32(1/2/5)
8(0/0/0)
5(0/1/0)
7(0/1/0)
5(0/1/0)
8- 39
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