ST20C2 查看數據表（PDF） - STMicroelectronics

零件编号

产品描述 (功能)

生产厂家

ST20C2

Instruction Set Reference Manual

STMicroelectronics 

xdble

xdble

extend to double

Code: 21 FD

Description: Sign extend the integer in Areg into a double length signed integer.

Definition:

if (Areg ≥ 0)

Breg′ ← 0

else

Breg′ ← −1

Creg′

← Breg

Error signals: none

Comments:

Secondary instruction.

202/212

®

Share Link: