Datasheet

Chapter 2. ColdFire Core 2-25

Execution Timings

2.7.1 MOVE Instruction Execution Timing

Execution timing for the MOVE.{B,W,L} instructions are shown in the next tables.

Table 2-13 shows the timing for the other generic move operations.

NOTE:

For all tables in this section, the execution time of any

instruction using the PC-relative effective addressing modes is

equivalent to the time using comparable An-relative mode.

ET with {<ea> = (d16,PC)} equals ET with {<ea> = (d16,An)}

ET with {<ea> = (d8,PC,Xi*SF)} equals ET with {<ea> = (d8,An,Xi*SF)}

The nomenclature “(xxx).wl” refers to both forms of absolute

addressing, (xxx).w and (xxx).l.

Table 2-11 lists execution times for MOVE.{B,W} instructions.

Table 2-12 lists timings for MOVE.L.

Table 2-11. Move Byte and Word Execution Times

Source

Destination

Rx (Ax) (Ax)+ -(Ax) (d16,Ax) (d8,Ax,Xi*SF) (xxx).wl

Dy 1(0/0) 1(0/1) 1(0/1) 1(0/1) 1(0/1) 2(0/1) 1(0/1)

Ay 1(0/0) 1(0/1) 1(0/1) 1(0/1) 1(0/1) 2(0/1) 1(0/1)

(Ay) 1(1/0) 2(1/1) 2(1/1) 2(1/1) 2(1/1) 3(1/1) 2(1/1)

(Ay)+ 1(1/0) 2(1/1) 2(1/1) 2(1/1) 2(1/1) 3(1/1) 2(1/1)

-(Ay) 1(1/0) 2(1/1) 2(1/1) 2(1/1) 2(1/1) 3(1/1) 2(1/1)

(d16,Ay) 1(1/0) 2(1/1) 2(1/1) 2(1/1) 2(1/1) — —

(d8,Ay,Xi*SF) 2(1/0) 3(1/1) 3(1/1) 3(1/1) — — —

(xxx).w 1(1/0) 2(1/1) 2(1/1) 2(1/1) — — —

(xxx).l 1(1/0) 2(1/1) 2(1/1) 2(1/1) — — —

(d16,PC) 1(1/0) 2(1/1) 2(1/1) 2(1/1) 2(1/1) — —

(d8,PC,Xi*SF) 2(1/0) 3(1/1) 3(1/1) 3(1/1) — — —

#<xxx> 1(0/0) 1(0/1) 1(0/1) 1(0/1) 1(0/1) — —