Talk:ICL Series 39

Peripherals Cab 1 etc
These were intended for the DM1 class systems. The Estriel has a separate FDS2500 disk cabinet — Preceding unsigned comment added by 82.2.221.189 (talk) 16:38, 21 March 2014 (UTC)

SX and S3L
The article describes SX as a mid-life upgrade to S3L. This is utterly incorrect - SX was a completely new design which had no components in common with S3L. Everything from the silicon technology to the cabinet was completely new. A member of the SX design team Glasguensis (talk) 16:08, 25 January 2010 (UTC)
 * Amendments to improve/correct the article are welcome. It could do with a few references too - manuals, sales literature, technical journal etc sources. --TraceyR (talk) 23:06, 25 January 2010 (UTC)

I too worked on Essex, it was a major development and is described in more detail here : http://www.fujitsu.com/ie/Images/ICL-Technical-Journal-v07i02.pdf — Preceding unsigned comment added by 81.187.109.41 (talk) 19:40, 18 January 2019 (UTC)

I have reworded this now since the language was a bit ambiguous. I couldn't find any references to "S3X", though, so that was removed. Also, it seems that the DX models arrived in 1991, not 1993, but searching for DX is a challenge. --PaulBoddie (talk) 15:11, 30 May 2024 (UTC)

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Original C implementation on the ICL Series 39
This is an interesting story from stack overflow. It discusses the size of C datatypes, and the intersection with ICL Series 39 architecture:

When we first implemented C on ICL Series 39 hardware, we took the standard at its word and mapped the data types to the natural representation on that machine architecture, which was short = 32 bits, int = 64 bits, long = 128 bits. But we found that no serious C applications worked; they all assumed the mapping short = 16, int = 32, long = 64, and we had to change the compiler to support that.

Jeffrey Walton (talk) 07:49, 4 December 2020 (UTC)


 * This is actually mentioned in the paper about VME-X:
 * "To be portable, a C application should not assume any particular size for arithmetic types, but experience suggests that the majority of applications do make such assumptions and will only work with the alternative mapping. Even applications which do not rely on the exact number of bits in a short or a long are often marred by assumptions about relative sizes (for instance, that two shorts can be packed into an int or that an extern declaration for a function returning a long can be omitted)." PaulBoddie (talk) 16:37, 25 May 2024 (UTC)

"Initialisation and Support Application" listed at Redirects for discussion
An editor has identified a potential problem with the redirect Initialisation and Support Application and has thus listed it for discussion. This discussion will occur at Redirects for discussion/Log/2022 September 28 until a consensus is reached, and readers of this page are welcome to contribute to the discussion. MB 03:09, 28 September 2022 (UTC)