On Sat, 10 Jan 2009 12:35:35 -0600, Chris Mason <[email protected]> wrote:
>... >In the days when I played with real stand-alone machines, typically the >old '360s, I seem to remember the "external interrupt" was a plastic >rectangular button on the face of the machine - probably I have a Model >30 in mind. ... I can confirm that for Models 30, 40, and 50, and see it on all pictures I've seen of every model of S/360 and S/370 (not including Mod 20). It looks like the button layout (at least of Load and Interrupt) was pretty standardized. A *very* smart idea. The Interrupt button was under the left of the 3 IPL address switches. The Load button was under the right switch. There was a set of lights between the 2 buttons. Pat O'Keefe ---------------------------------------------------------------------- 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
