IBM System/370

The IBM System/370 (S/370) was a model range of IBM mainframes announced on June 30, 1970 as the successors to the System/360 family. The series maintained backward compatibility with the S/360, allowing an easy migration path for customers; this, plus improved performance, were the dominant themes of the product announcement. Improvements over the S/360 first released in the S/370 model range included:

  • standard dual-processor capability;
  • "monolithic main memory" based on integrated circuits instead of magnetic cores;
  • full support for virtual memory through a new microcode floppy disk on the 370/145 and a hardware upgrade to include a DAT box on the 370/155 and 370/165; these were not announced until 1972;
  • 128-bit floating point arithmetic on all models.

Read more about IBM System/370:  Evolution, Expanding The Address Space, Series and Models, S/370 Replacement, Linux On The S/370, I/O Evolutions, Architecture Details

Famous quotes containing the word system:

    Human beings are compelled to live within a lie, but they can be compelled to do so only because they are in fact capable of living in this way. Therefore not only does the system alienate humanity, but at the same time alienated humanity supports this system as its own involuntary masterplan, as a degenerate image of its own degeneration, as a record of people’s own failure as individuals.
    Václav Havel (b. 1936)