Bill said that Paul said: > On Fri, Dec 9, 2016 at 1:40 PM, Paul Koning <[email protected]> wrote: >> >> > On Dec 9, 2016, at 1:22 PM, william degnan <[email protected]> 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 >> >> >> > 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. > > Bill
Thank you for the interesting brochure Bill, as far as I know the Model 44 was a bit of an odd duck in having a modified instruction set. I have something relevant of my own to contribute: My dad's 360 Reference Card with his scribbled-on annotations for the Model 44 ie, 2044 CPU: http://web.aanet.com.au/~malikoff/ibm/IBM_System_360_Reference_Card_with_Model44_2044_CPU_annotations_by_Alec_Malikoff.pdf The annotations are on pages 1, 2, 5 and 6. I think at least one of the universities here in Oz had a Model 44, I guess he had to service it, but mainly he was a Model 40 CE. Steve.
