Talk:ICT 1900

ICT or ICL?
Some of the 1900 machines mentioned here were produced long after ICL came into being, including I imagine all of the "A" series machines and, I think, the "E" and "T" series too. For the sake of accuracy they should be e.g. "ICL 1903A" etc. Can anyone provide the dates to allow a correct assignment? TraceyR 13:24, 2 March 2007 (UTC)


 * At Pasquali.org there's a table showing that the 1904/5 E/F were probably ICT machines, but everything from 1901A onwards were produced/sold under ICL. I'll change the article and see what happens! TraceyR 13:32, 2 March 2007 (UTC)


 * I was hired to program the ICT-1902 (in PLAN) circa 1964-1966. The 1902 was purchased from ICT, although by delivery the manufacturer might have been ICL.  —Preceding unsigned comment added by Barvennon (talk • contribs) 23:23, 8 March 2008 (UTC)


 * I worked on an ICL1905F in the late 1970s. I didn't know the history of that particular machine but it was certainly badged ICL. I think the point, though, is the original name for the range of machines, not the name used for existing (continued) ranges after ICL came into being. Northernhenge (talk) 09:05, 9 March 2008 (UTC)

Maximop?
I distinctly remember using this on the ICL 1900 mainframe to which I had access during the '70s, but I can find no mention of it anywhere. 4-character filenames, 4-character commands, a "shell script" language (I've forgotten what it was referred to as), with the concept of default values when using parameters, e.g. If someone can help me piece this together I'm sure there's more notable information to come out which would belong in the article. --ClickRick (talk) 19:43, 15 May 2009 (UTC)
 * Interestingly, I can find references in several places to MINIMOP.
 * I also remember using SOBS - SOuthampton Basic System - which was good at manipulating matrices, and also had a rather different syntax for handling substrings than most other BASIC derivative languages which I've seen since.
 * --ClickRick (talk) 00:40, 16 May 2009 (UTC)


 * SOBS and MINIMOP articles added with what I can remember and can verify. Still nothing about Maximop though.
 * --ClickRick (talk) 19:10, 24 May 2009 (UTC)

Wealth of information
There's a source of historical information at http://www.ourcomputerheritage.org/wp/ which is very tempting, but very little of it would, as it stands, meet WP:V. However, even if they have documents to back up what they've written, most of what they have pre-dates ICL as such, so should the template be broken into ICL and pre-ICL, or what? --ClickRick (talk) 19:24, 24 May 2009 (UTC)

The George 4 system was the first VIRTUAL memory system developed
No it wasn't, ATLAS had paged VM long before even George 3. 80.12.81.14 (talk) 12:03, 23 September 2010 (UTC)


 * Quite. So I've removed this absurd claim from the article: "The George 4 system was the first VIRTUAL memory system developed and was working at Leeds University in 1969." Atlas was making use of virtual memory at least 10 years earlier. Malleus Fatuorum 21:47, 23 September 2010 (UTC)

'OLDAS' and UDAS
Surely the introduction of Unified Direct Access Standards in the late 1960s deserves a mention somewhere. Perhaps someone can put the significance of UDAS in its industry perspective. Also the list of utilities mentions UDAS versions only (e.g. the XPJ-series of UDAS utilities, which were preceded by the XJEx versions). --TraceyR (talk) 20:39, 23 September 2010 (UTC)

Proposed rewrite
I've been working on a what I'd like to propose as a new version of this page at User:HughesJohn/Sandbox/ICT 1900. If anyone has any objections or suggestions please write here.

(It's not complete yet, I've got more work to do on the OS (Maximop) and software (languages, utilities).

HughesJohn (talk) 17:52, 20 March 2011 (UTC)


 * If there are no objections I intend to install my new version of the ICT 1900 page next week. HughesJohn (talk) 08:54, 25 March 2011 (UTC)

I have installed the rewritten page. Hope everybody likes it. HughesJohn (talk) 08:25, 29 March 2011 (UTC)

Move to ICT 1900 series
Wow. That was quick.

Funny, didn't see any discussion. HughesJohn (talk) 14:13, 2 November 2011 (UTC)