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Rev. 5.00, 09/03, page 32 of 760
2.3.3 Instruction Formats
Table 2.3 explains the meaning of instruction formats and source and destination operands. The
meaning of the operands depends on the operation code. The following symbols are used.
xxxx: Operation code
mmmm: Source register
nnnn: Destination register
iiii: Immediate data
dddd: Displacement
Table 2.3 Instruction Formats
Instruction Format
Source
Operand
Destination
Operand
Instruction
Example
0 format
xxxx xxxx xxxxxxxx
15 0
——NOP
n format
xxxx xxxx xxxxnnnn
15 0
— nnnn: register
direct
MOVT Rn
Control register or
system register
nnnn: register
direct
STS
MACH,Rn
Control register or
system register
nnnn: register
indirect with
pre-decrement
STC.L
SR,@–Rn
m format
xxxx
mmmm
xxxx xxxx
15 0
mmmm: register
direct
Control register
or system
register
LDC
Rm,SR
mmmm: register
indirect with post-
increment
Control register
or system
register
LDC.L
@Rm+,SR
mmmm: register
indirect
—JMP@Rm
mmmm: PC-
relative using Rm
—BRAFRm