On Thu, 5 Apr 2007 12:03:11 -0600, David Day <[EMAIL PROTECTED]> wrote:
>Go back and look at your pops manuals for the last 10 years or so. Note the >new instructions from one release to another. Those instructions were added >to facilitate functionality that was incorporated into one or more pieces of >software that IBM markets. If IBM is in control of the hardware that it's >software runs on, than it is in IBM's own interest to continue to enhance >the functionality of that hardware. If IBM's software executes on non-IBM >hardware, then it is subject to the limitations of that hardware. Someone >else is driving the train. Wrong. IBM has always specified what hardware is required to run their software. When IBM introduced MVS/SE, it required some new instructions to run. Amdahl processors did not implement those instructions, and was not able to run MVS/SE until Amdahl provided support for those instructions. In point of fact, that support was in the form of a software product that emulated those instructions. Amdahl also licensed that software to some companies that were running on older IBM processors that did not implement those instructions either, and so could not run MVS/SE either without MVS/SE Assist. -- Tom Marchant ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
