IBM System/360 Model 30: Difference between revisions

Revision as of 16:24, 15 September 2023

Revision as of 03:21, 9 October 2023

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==History==

The Model 30 was a popular [[IBM mainframe]] which was announced in 1964 as the least powerful of the [[IBM System/360|System/360]]s.<ref group=NB>The less powerful [[IBM System/360 Model 20|Model 20]], offered only partial compatibility with the rest of the System/360 line.</ref> The System/360 series was the first line of computers in the world to allow machine language programs to be written that could be used across a broad range of compatible machines of different sizes. It was the smallest model that had the full [[System/360]] instruction set (unlike the [[IBM System/360 Model 20|Model 20]]) and served as a stand-alone system, communications system or as a satellite processor of a larger system.<ref name="ibm-archives">{{cite web|title=IBM Archives: System/360 Model 30|url=https://www-03.ibm.com/ibm/history/exhibits/mainframe/mainframe_PP2030.html|website=IBM|date=23 January 2003 |access-date=16 August 2016}}</ref>

The first delivery of the 360/30 was in June 1965 to [[McDonnell Aircraft]].<ref name=ibmbook>{{cite book|last1=Pugh|first1=Emerson W.|last2=Johnson|first2=Lyle R.|last3=Palmer|first3=John H.|title=IBM's 360 and early 370 systems|url=https://archive.org/details/ibms360early370s0000pugh|url-access=registration|date=1991|publisher=MIT Press|___location=Cambridge, Mass.|isbn=9780262161237}}</ref>

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! colspan="2" | A typical, early, basic Model 30 system had the following configuration:<ref>{{cite book|url=http://bitsavers.org/pdf/ibm/360/operatingGuide/C20-1635-2_Model_40_Operating_Techniques.pdf|title=IBM System/360 Model 40 Operating Techniques|id=C20-1635-2|publisher=IBM}}</ref>

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| style="vertical-align: top;" |Model 30 processor ||IBM 2030 Central Processing Unit<br>*32&nbsp;KB storage<br>*storage protection feature<br>*standard instruction set<br>*decimal instruction set<ref group=NB>Optional floating-point instruction set was also available</ref><br>*one multiplexor channel<br>*one selector channel<br>*interval timer

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|Operator console ||[[IBM 1052]] Typewriter-Keyboard (usually assigned to 01F hexadecimal address)

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[[File:IBM 360-30.jpg|thumb|210x210px|IBM 360 Model 30 front panel closeup]]

To keep costs down, CPU features such as the interval timer and storage-protection feature were optional.

==System software==