IBM System/360 Model 44 Pamphlet
billdegnan at gmail.com
Fri Dec 9 14:39:07 CST 2016
On Fri, Dec 9, 2016 at 3:07 PM, Paul Koning <paulkoning at comcast.net> wrote:
> > On Dec 9, 2016, at 2:56 PM, william degnan <billdegnan at gmail.com> wrote:
> > On Fri, Dec 9, 2016 at 1:40 PM, Paul Koning <paulkoning at comcast.net>
> >>> On Dec 9, 2016, at 1:22 PM, william degnan <billdegnan at gmail.com>
> >>> IBM System/360 Model 44 Pamphlet from Nov 1968
> >>> http://www.vintagecomputer.net/browse_thread.cfm?id=659
> >> Nice. The caption is odd; it claims that "... instruction set was
> >> compatible with the /30 through /91 models" when the pamphlet itself
> >> it quite clear that this is not so (no SS instructions).
> >> It's curious that the emulation feature, which adds software emulation
> >> those instructions, isn't mentioned, and in fact I haven't seen it
> >> mentioned anywhere.
> >> paul
> > Paul,
> > You're right, the brochure says only through the /75, my error. I fixed
> > the page.
> > I should have written programs written for the Model 44 will be
> > with the System/360 Model 30 through 91, provided the configurations are
> > comparable and the programs and not time dependent.
> That's true, but the wording implies that the converse holds (360/75
> programs will run on 360/44) which is usually not true. "Compatible subset
> of the ... models" would be clearer.
Just like any older / newer computer that is in principle compatible, but
practically not really.
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