FLIH will obtain storage to build SVRB because the type 3 and 4 module will s separate from the nucleus. As interior is still disabled, FLIH cannot issue GETNAIN SVC. It uses GETCELL macro to get storage.
FLIh then moves the registers saved in LCCA to SVRB. IO and external interrupt is re-enabled. Get the locks specified in the SVC table entry. Set up R14 with the address of EXIT PROLOG which is entered when the handle ends to clean up such as SVRB. Beach to the interrupt handler.
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