If you want to look at it from the perspective of an Assembler
Language programmer, assemble an END statement with the option
OPTABLE(UNI,LIST) and count the number of mnemonics supported
by HLASM. The earliest assemblers supported the (140 or so?)
instructions plus 17 extended mnemonics; with the addition of
the z196 instructions plus extended mnemonics, the count is
now much larger.
John Ehrman
(------------------ Referenced Note Follows --------------------)
Date: 30 August 2010, 21:38:25 -0700
From: IBM Mainframe Assembler List ASSEMBLE at INTERNET
I'm doing a presentation and wanted to quickly mention how the mainframe
architecture instruction set has grown. Does anyone happen to know the
number of different unprivileged machine instructions there were in the
early 370 days versus the latest soon-to-be-released z/Architecture
instruction set?
