This header provides a container for system/member information data:

Field Name

Description

JDSIEYE

Eyecatcher. Set to 'JDSIHDR' by the subsystem.

JDSIOHDR

Offset to the first section in this container. The prefix section mapped by JPSYSPRF in macro IAZJPLXI.

JDSINEX8

Pointer to the next JDSIHDR in this chain. The next header in the chain is returned by the next most recent call to the SSI. This is a 64-bit pointer. JDSINEXT is the 31-bit part of this pointer.

Prefix section (JPSYSPRF in macro IAZJPLXI) and system information section (JPSYSINF in macro IAZJPLXI) are not unique for this interface and are described in Output Parameters.