ST20CX 查看數據表（PDF） - STMicroelectronics

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ST20CX

Instruction Set Reference Manual

STMicroelectronics 

cbu

cbu

check byte unsigned

Code: 2B FB

Description: Check that the value in Areg can be represented as an 8-bit unsigned

integer.

Definition:

if (Areg < 0) or (Areg ≥ 28)

IntegerError

Error signals:

IntegerError signalled if Areg is not in range.

Comments:

Secondary instruction.

See also: cb cir ciru cs csu

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