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MOTOROLA M68040 USER’S MANUAL 10-33
10.7.2 Integer Unit Support Timings (Continued)
FSAVE <ea>*
Addressing Idle or Null Short Long
Mode <ea>
Calculate Execute <ea>
Calculate Execute <ea>
Calculate Execute
FPn ——————
Dn ——————
An ——————
(An) 12 1L + 11 33 1L + 32 50 1L + 49
(An)+ ——————
–(An) 11 11 32 32 49 49
(xxx).W, (xxx).L 13 1L + 11 34 1L + 32 51 1L + 49
#<xxx> ——————
(d 16,An) 12 1L + 11 33 1L + 32 50 1L + 49
(d 16,PC) ——————
(d 8,An,Xn) 13 13 34 34 51 51
(d 8,PC,Xn) ——————
(An,Xn) 16 1L + 14 37 1L + 35 54 1L + 52
(bd,An,Xn) 17 1L + 15 38 1L + 36 55 1L + 53
([bd,An,Xn]) 19 1L + 18 40 1L + 39 57 1L + 56
([bd,An,Xn],od) 21 1L + 19 42 1L + 40 59 1L + 57
([bd,An],Xn) 20 3L + 17 41 3L + 38 58 3L + 55
([bd,An],Xn,od) 22 3L + 18 46 3L + 42 65 3L + 61
*Timings are for an idle floating-point unit.
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