Editing IBM System/36 (section)

===Main line===
====System/36 Model 5360====

The System/36 5360 was the first model of System/36. It weighed 700&nbsp;lb (318&nbsp;kg), cost $140,000 and is believed to have had processor speeds of about 2 MHz and 8 MHz for its two processors. The system ran on 208 or 240 volts AC.

The five red lights on the System/36 were as follows:
(1) Power check.
(2) Processor check.
(3) Program check.
(4) Console check.
(5) Temperature check.

If any light other than #4 ever came on, the system needed to be rebooted. Console can be restored if it has been powered off, but the other conditions are unrecoverable.

There were various models of the 5360, including a C and D model that dealt with speed and the ability to support an additional frame to house two additional drives.

====System/36 Model 5362====
IBM introduced the 5362 or "Compact 36" in 1984<ref name=autogenerated2>{{cite web |url=http://www-03.ibm.com/ibm/history/exhibits/rochester/rochester_chronology4.html |title=IBM Archives: Rochester chronology – page 4 |archive-url=https://web.archive.org/web/20080327175507/http://www-03.ibm.com/ibm/history/exhibits/rochester/rochester_chronology4.html |archive-date=2008-03-27 |url-status=dead}}</ref> as a system targeted at the lower end of their market.  It had a deskside tower form factor. It was designed to operate in a normal office environment, requiring little special consideration.  It differed from the 5360 in by having a more limited card cage, capable of fewer peripherals. It used 14" fixed disks (30 or 60 MB) and could support up to two; main storage ranged from 128 KB to 512 KB.<ref name=autogenerated1 />  One 8" floppy diskette drive was built in. The 5362 also allowed the use of a channel attached external desktop 9332-200, 400, & 600 DASD, effectively allowing a maximum of 720MB.

The 5362 weighed 150 pounds (68 kg) and cost $20,000.[[File:IBM System 36.JPG|thumb|280px|IBM 5364 System Unit]]

====System/36 Model 5364====
The model 5364 was called the "System/36 PC"<ref>{{Cite news|url=https://books.google.com/books?id=5hdeC0k_JHwC&pg=PA131|title=With the IBM System/36 PC, you can run your business from here. (Advertisement)|magazine=[[PC Magazine]]|volume=5|issue=13|date=July 1986|page=131|publisher=Ziff Davis, Inc.}}</ref> or "Desktop 36" (and also, informally, the "Baby/36" by some – but this name was later attached to a software program produced by California Software Products, Inc.).  The 5364 was a June 1985<ref>{{cite web |url=http://www.faqs.org/abstracts/Computers-and-office-automation-industries/IBM-Unveils-Multitasking-Processor-for-Use-with-PC-Interface-and-Upgrades-System-38-Processor.html |title=IBM Unveils Multitasking Processor for Use with PC Interface, and Upgrades System-38 Processor}}</ref> attempt by IBM to implement a System/36 on PC-sized hardware. Inside, there were IBM chips, but the cabinet size was reminiscent of an [[IBM PC/AT]] of the period. The machine had a 1.2 MB 5.25-inch diskette drive,<ref name=autogenerated2 /> which was incompatible with PCs and with other S/36s. The control panel/system console (connected via an expansion card) was an [[IBM Personal Computer|IBM PC]] with at least 256 KB RAM.

====System/36 Model 5363====
The model 5363 was positioned as a replacement for the 5364, and was announced in October 1987.<ref>{{cite news |url=https://www.nytimes.com/1987/10/21/business/company-news-ibm-introduces-system-36-mode.html?pagewanted=1 |title=COMPANY NEWS; I.B.M. INTRODUCES SYSTEM/36 MODE |newspaper=[[The New York Times]]}}</ref> It used a deskside tower style enclosure like that of the 5362, but was only 2/3 the size.  It featured updated hardware using newer, smaller hard drive platters, a 5{{fraction|1|4}}" diskette drive, and a revised distribution of the SSP.