9 Dec
2016
9 Dec
'16
12:07 p.m.
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> wrote:
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 compatible
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.
paul
On Dec 9, 2016, at 1:22 PM, william degnan
<billdegnan at gmail.com> wrote:
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 makes
it quite clear that this is not so (no SS instructions).
It's curious that the emulation feature, which adds software emulation of
those instructions, isn't mentioned, and in fact I haven't seen it
mentioned anywhere.
paul