2 Instructions
2-216 CP1E CPU Unit Instructions Reference Manual(W483)
COM/COML
Applicable Program Areas
Operands
Operand Specifications
Flags
Function

COM

COM(029) reverses the status of every specified bit in Wd.

WdWd: 1 0 and 0 1

Note When using the COM instruction, be aware that the status of each bit will change each cycle in which the
execution condition is ON.

COML

COML(614) reverses the status of every specified bit in Wd and Wd+1.

(Wd+1, Wd)(Wd+1, Wd)

Note When using the COML instruction, be aware that the status of each bit will change each cycle in which the
execution condition is ON.
Instruction Mnemonic Variations Function
code Function
COMPLEMENT COM @COM 029 Turns OFF all ON bits and turns ON all OFF bits in Wd.DOUBLE COMPLEMENT COML @COML 614 Turns OFF all ON bits and turns ON all OFF bits in Wd and Wd+1.
Symbol
COM COML
Area Step program areas Subroutines Interrupt tasks
Usage OK OK OK
Operand Description Data type Size
COM COML COM COML
Wd Word WORD DWORD 1 2
Area Word addresses Indirect DM addresses Constants CF Pulse bits TR bits
CIO WR HR AR T C DM @DM *DM
Wd OK OK OK OK OK OK OK OK OK --- --- --- ---
Name Label Operation
Error Flag P_ER OFF
Equals Flag P_EQ ON when the result is 0.
OFF in all other cases.
Negative Flag P_N ON when the leftmost bit of R is 1.
OFF in all other cases.
COM(029)
Wd Wd: Word Wd: Word
COML(614)
Wd