ST20CX View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST20CX

Instruction Set Reference Manual

STMicroelectronics 

xbword

xbword

sign extend byte to word

Code: 2B F8

Description: Sign-extend the value in the least significant byte of Areg into a signed

integer.

Definition:

Areg′0..7

Areg′8..BitsPerWord-1

← Areg0..7

← Areg7

Error signals: none

Comments:

Secondary instruction.

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