IBM System 370 Control Panel

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
Designer IBM
Bits 32-bit
Introduced 1970
Design CISC
Type Register-Register
Encoding Variable (2, 4 or 6 bytes long)
Branching Condition code, indexing, counting
Endianness Big
General purpose 16
Floating point 4 64-bit

The original System/370 line underwent several architectural improvements during its roughly 20-year lifetime. One very significant change was the introduction of virtual memory , which was first made generally available in 1972 via IBM's "System/370 Advanced Function" announcement. IBM had initially (and controversially) chosen to exclude virtual storage from the S/370 line.  The August 2nd, 1972 announcement included:

Four new operating systems: DOS/VS  (DOS with virtual storage), OS/VS1  (OS/360  MFT  with virtual storage), OS/VS2 (OS/360 MVT  with virtual storage) Release 1, termed SVS  (Single Virtual Storage), and Release 2, termed MVS  (Multiple Virtual Storage) and planned to be available 20 months later (at the end of March 1974), and VM/370  – the re-implemented CP/CMS 

We have Had a fantastic donation from Cambridge University Computing Service. The control panel from the IBM 370 system that used to be used at Cambridge University. We hope to interview people that used to use the machine and we will have it on display here for you to see ... Thanks so much to University Computing Service for the donation.

Manufacturer: IBM
Date: 1970

IBM System 370 Control Panel Manuals:

Item Manufacturer Date
IBM System 370 System Summary: Processors IBM August 1979

Other Systems Related To IBM System 370 Control Panel:

Item Manufacturer Date
IBM 370/138 IBM 30th June 1976
IBM Displaywriter IBM 1980
IBM 5161 IBM 1981
IBM 5150 IBM 1st September 1981
IBM 5160 XT IBM 1st January 1983
IBM 5170 IBM 1984
IBM 5155 Portable Computer IBM 1st June 1984
IBM 5140 Convertible Computer IBM April 1986
IBM PS/2 Model 70 IBM 1987
IBM PS/2 Model 30 IBM April 1987
IBM PS/2 Model 80 (8580-071) IBM 2nd April 1987
IBM PS/2 Model 50 (8550) IBM October 1987
IBM PS/1 IBM 1990
IBM RS/6000 Model 550L IBM 1990
IBM PS/1 Machine 2133 Model 114 IBM 1990
IBM Model 8573-121 IBM January 1990
IBM RS/6000 320 IBM 15th February 1990
IBM PS/2 Note IBM 1991
IBM PS/2 Model 95 (8595) IBM 1991
IBM ThinkPad 2523-710T IBM 1993
IBM ThinkPad 701CS IBM 1995
IBM ThinkPad 755CEX IBM March 1995
IBM RS/6000 SP2 Type 7025 IBM 1996
IBM ThinkPad 365XD IBM 1996
IBM RS/6000 Model 7043 604e IBM 1998
IBM 8363 NetVisa Thin Client IBM November 2000
IBM ThinkPad R30 2656 IBM 2001
IBM Thinkpad 2628-STG IBM 2001

This exhibit has a reference ID of CH31058. Please quote this reference ID in any communication with the Centre for Computing History.


IBM System 370 Control Panel

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