How is the &HRDWNAME symbol obtained?

Products

• COMMON SERVICES FOR Z/OS
• 90S SERVICES
• Common Services

Issue/Introduction

Recently replaced z13 machine with a z15 machine.  Now notice that the &HRDWNAME symbol has a new value. 

Based on Common Services for z/OS documentation, it looks like that value is somehow being pulled from our IODF.

How exactly is this value being obtained?

Environment

Release : 14.1
Release : 15.0
Component : SERVCS : CAMASTER/ 

Resolution

The &HRDWNAME symbol is being pulled from the IODF.

The CAMASTER Address is initialized during IPL and will add several Systems Symbols such as &HRDWNAME to the static system symbol table.