ST20CX 查看數據表（PDF） - STMicroelectronics

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ST20CX

Instruction Set Reference Manual

STMicroelectronics 

csngl

csngl

check single

Code: 24 FC

Description: Check that the two word signed value in Areg and Breg (most

significant w ord in Breg) can be represented as a single length signed integer.

Definition:

if ((Areg ≥ 0) and (Breg ≠ 0)) or ((Areg < 0) and (Breg ≠ −1))

IntegerError

Error signals:

IntegerError signalled if Areg is not in range.

Comments:

Secondary instruction.

See also: cb cbu cir ciru cs csu cword

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