MC68020 Motorola, MC68020 Datasheet - Page 245

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

8.2.9 Immediate Arithmetic/Logical Instructions
The immediate arithmetic/logical instructions table indicates the number of clock periods
needed for the processor to fetch the source immediate data value and perform the
specified arithmetic/logical operation using the specified destination addressing mode.
Footnotes indicate when to add appropriate fetch effective or fetch immediate effective
address time. This computation will give the total execution time needed to perform the
appropriate immediate arithmetic/logical operation. 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.
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Add Fetch Effective Address Time
Add Fetch Immediate Address Time
MOVEQ
ADDQ
ADDQ
SUBQ
SUBQ
ADDI
ADDI
ANDI
ANDI
EORI
EORI
ORI
ORI
SUBI
SUBI
CMPI
Instruction
#<data >,Dn
#<data >,Rn
#<data >,Mem
#<data >,Rn
#<data >,Mem
#<data >,Dn
#<data >,Mem
#<data >,Dn
#<data >,Mem
#<data >,Dn
#<data >,Mem
#<data >,Dn
#<data >,Mem
#<data >,Dn
#<data >,Mem
#<data >,EA
M68020 USER’S MANUAL
Best Case
0(0/0/0)
0(0/0/0)
3(0/0/1)
0(0/0/0)
3(0/0/1)
0(0/0/0)
3(0/0/1)
0(0/0/0)
3(0/0/1)
0(0/0/0)
3(0/0/1)
0(0/0/0)
3(0/0/1)
0(0/0/0)
3(0/0/1)
0(0/0/0)
Cache Case
2(0/0/0)
2(0/0/0)
4(0/0/1)
2(0/0/0)
4(0/0/1)
2(0/0/0)
4(0/0/1)
2(0/0/0)
4(0/0/1)
2(0/0/0)
4(0/0/1)
2(0/0/0)
4(0/0/1)
2(0/0/0)
4(0/0/1)
2(0/0/0)
Worst Case
3(0/1/0)
3(0/1/0)
6(0/1/1)
3(0/1/0)
6(0/1/1)
3(0/1/0)
6(0/1/1)
3(0/1/0)
6(0/1/1)
3(0/1/0)
6(0/1/1)
3(0/1/0)
6(0/1/1)
3(0/1/0)
6(0/1/1)
3(0/1/0)
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