MC68LC040RC25A Datasheet, PDF (311/442 Pages) Freescale Semiconductor, Inc – M68040 Users Manual

Freescale Semiconductor, Inc.
10.6 INTEGER UNIT INSTRUCTION TIMINGS (Continued)
DIVS.W, DIVU.W*
DIVS.L, DIVU.L,
DIVSL.L, DIVUL.L*
JMP
Addressing
Mode
<ea>
Calculate
Execute
<ea>
Calculate
Execute
<ea>
Calculate
Execute
Dn
8
27
9
44
—
—
An
—
—
—
—
—
—
(An)
(An)+
8
27
9
44
3
2L + 1
8
27
9
44
—
—
–(An)
8
27
9
44
—
—
(d _16,An)
8
27
11
2L + 44
4
(d _16,PC)
11
3L + 27
12
3L + 44
6
(xxx).W, (xxx).L
8
27
11
2L + 44
3
#<xxx>
8
27
10
1L + 44
—
(d _8,An,Xn)
11
30
12
47
6
(d _8,PC,Xn)
12
1L + 30
13
1L + 47
7
3L + 1
5L + 1
2L + 1
—
6
1L + 6
(BR,Xn)
13
1L + 31
14
1L + 48
8
1L + 7
(bd,BR,Xn)
14
1L + 32
15
1L + 49
9
1L + 8
([bd,BR,Xn])
17
1L + 35
18
1L + 52
12
1L + 11
([bd,BR,Xn],od)
18
1L + 36
19
1L + 53
12
1L + 11
([bd,BR],Xn)
18
3L + 34
19
3L + 51
13
3L + 10
([bd,BR],Xn,od)
19
3L + 35
20
3L + 52
14
3L + 11
*This instruction interlocks the <ea> calculate and execute stages. Execution time for a DIV/0 exception taken and
exception processing is approximately 16 + <ea> calculate clocks. For example, DIV.W #0,Dn takes approximately
24 clocks in both the <ea> calculate and execute times to execute the divide instruction, perform exception stacking,
fetch the exception vector, and prefetch the next instruction.
10-20
M68040 USER’S MANUAL
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