Learn IBM Assemb;y Lsnhushr
Start learning the basics of decimal arithmetic in assembler by tackling how to add and subtract in packed decimal. This video will get you started on the road to mastering the arithmetic every assembler programmer needs to know.
I’ve added a link to all the video lessons on assembler topics at the top of the home page. I’ll be adding more lessons over the next few months. The material will be enough to get you started with all the basic skills of a journeyman programming in HLASM.
Assembly language won’t make much sense until you get a grip on the USING directive and the associated terms: Domain and Range. You can hear a lesson about this here. When things go wrong with USING directives, the result is an addressability error – usually lots of them! This video lesson, recorded in a real mainframe session, can make Addressability errors a snap.