model-dependent features

Some parts of the architecture are specifically called out as model-dependent. I recommend a section listing these. John Sauter (talk) 19:29, 7 September 2010 (UTC)[reply]

differences between models

Some features differed between models, even though they were not on the architectural list. I am thinking of imprecise interrupts on the larger systems. I think it would be sufficient to mention in passing, when describing a feature, that it was not implemented the same way on all models. John Sauter (talk) 19:29, 7 September 2010 (UTC)[reply]

models that were very different

The System/360 model 20 was a System/360 in name only. IBM acknowledged this by titling the manual which listed software as being for System/360 models 22 and above. The exclusion of the model 20 needs to be mentioned. The models 44 and 67 also departed significantly from the standard architecture. John Sauter (talk) 19:29, 7 September 2010 (UTC)[reply]