Editing IBM System/34 (section)

==Software==
[[File:IBM System34.IsettAcres.jpg|thumb|IBM System/34 with [[IBM 5250|5251 terminal]] (on top) and 5211 printer (right, with top opened)]]
===Operating System===
{{Main|System Support Program}}

The [[System Support Program]] (SSP) was the only operating system of the S/34.  It contained support for multiprogramming, multiple processors, 36 devices, job queues, printer queues, security, [[indexed file]] support. Fully installed, it was about 5 MB.<ref>{{cite web
|title=IBM System/34 System Support Program Logic Manual
|url=http://bitsavers.trailing-edge.com/pdf/ibm/system34/plm/LY21-0050-0_System_34_System_Support_Program_Logic_Manual_System_Dec77.pdf}}</ref> The [[Operational Control Language]] (OCL) was the control language of SSP.

===Programming===
The System/34's initial programming languages were limited to [[RPG II]] and Basic Assembler<ref>{{cite news   
   |newspaper=[[Computerworld]] |date=September 26, 1977 |page=23
   |url=https://www-merlijn.archive.org/details/computerworld1139unse/page/23/mode/1up
   |title=Fortran IV One Highlight Of IBM 34 Enhancements}}</ref> when introduced in 1977.<ref>{{cite news |newspaper=[[The New York Times]]
   |url=https://www.nytimes.com/1983/05/17/business/ibm-introduces-computer-to-replace-system-34-model.html
   |title=I.B.M. introduces computer to replace System 34 model
   |author=Andrew Pollack  |date=May 17, 1983}}</ref> [[FORTRAN]] was fully available six months after the 34's introduction,<ref name=S34intro78>{{cite book  
   |url=http://www.bitsavers.org/pdf/ibm/system34/GC21-5153-2_System_34_Introduction_Mar78.pdf
   |title=System/34 Introduction  |date=March 1978}}</ref> and [[COBOL]] was available as a [[Request price quotation|PRPQ]].<ref>"potentially available ... special order"</ref> [[System/34 BASIC|BASIC]] was introduced later.