ST20C2 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST20C2

Instruction Set Reference Manual

STMicroelectronics 

sub

sub

Code: FC

Description: Subtract Areg from Breg, with checking for overflow.

Definition:

Areg′ ← Breg −checked Areg

Breg′ ← Creg

Creg′ ← undefined

Error signals:

IntegerOverflow can be signalled by −checked

Comments:

Secondary instruction.

See also: diff add

subtract

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