PsiFS: SWI Calls

PsiFS_CheckUID

PsiFS_CheckUID
(SWI &520CE)
Calculate the checksum for a UID

On entry:R0 =UID1
R1 =UID2
R2 =UID3

On exit:R0 =calculated checksum, UID4

Interrupts:Interrupt status is undefined
Fast interrupts are enabled

Processor mode:Processor is in SVC mode

Re-entrancy:SWI is not re-entrant

Use: Calculate the checksum for an EPOC UID. The resulting value should be used for UID4.

Related SWIs:None

Related vectors:None

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