MC68020 Motorola, MC68020 Datasheet - Page 251
MC68020
Manufacturer Part Number
MC68020
Description
(MC68020 / MC68EC020) MICROPROCESSORS USERS MANUAL
Manufacturer
Motorola
Datasheet
1.MC68020.pdf
(306 pages)
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8.2.15 Conditional Branch Instructions
The conditional branch instructions table indicates the number of clock periods needed for
the processor to perform the specified branch on the given branch size, with complete
execution times given. No additional tables are needed to calculate total effective
execution time for these instructions. 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
Bcc (Taken)
Bcc.B (Not Taken)
Bcc.W (Not Taken)
Bcc.L (Not Taken)
DBcc (cc = False, Count Not Expired)
DBcc (cc = False, Count Expired)
DBcc (cc = True)
Instruction
M68020 USER’S MANUAL
Best Case
3(0/0/0)
1(0/0/0)
3(0/0/0)
3(0/0/0)
3(0/0/0)
7(0/0/0)
3(0/0/0)
Cache Case
10(0/0/0)
6(0/0/0)
4(0/0/0)
6(0/0/0)
6(0/0/0)
6(0/0/0)
6(0/0/0)
Worst Case
10(0/3/0)
9(0/2/0)
5(0/1/0)
7(0/1/0)
9(0/2/0)
9(0/2/0)
7(0/1/0)
8- 37
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