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3 May 2025

diffhist Memory management unit 02:43 −23 Guy Harris talk contribs (→Paged translation: The program does *not* see its memory as a single contiguous block in the segmented case; it sees it as a set of segments, each of which is a *separate* contiguous block. Fix grammar while we're at it.)
diffhist Memory management unit 02:42 −2 Guy Harris talk contribs (→Paged translation: Say "to store a set of mapping information" so that the "that holds a set of..." doesn't run the risk of looking as if it applies only to the last entry in the list of non-page-table MMUs.)
diffhist Memory management unit 02:40 +9 Guy Harris talk contribs (→Paged translation: Speak of a set of registers for a translation-register MMU.)
diffhist Memory management unit 02:39 +29 Guy Harris talk contribs (→Paged translation: Refer to the static RAM as a one-or-more-level array; the Zehr paper's "paged translation" used a single-level array, which has the same problem as a single-level in-memory page table, namely that the array of page table entries can't be sparse and it gets difficult to handle a large address space. Sun's static-RAM MMUs were multi-level. (And, yes, you can do demand paging with a static-RAM MMU.))
diffhist Memory management unit 01:57 +14 Guy Harris talk contribs (Discuss IOMMUs in their own section.)
diffhist Memory management unit 01:55 −497 Guy Harris talk contribs (→Paged translation: Some reshuffling and removal of duplicate information.)
diffhist Memory management unit 01:50 −20 Guy Harris talk contribs (Put the "modern systems" stuff into the "paged translation" section, as they're discussing the same topic. The next step is to remove redundancy.)
diffhist Memory management unit 01:42 −21 Guy Harris talk contribs (→Segmented translation: Start out with a description of how segmentation works; link "segment" to memory segmentation, which gives more details. Take text from memory segmentation#x86 architecture to describe the 8086/8088/80186/80188 flavor of segmentation, and note that the 80286 and later had a more normal flavor, with a segment table. Comment out the PDP-11 stuff for now. Remove stuff about Mac non-MMU schemes.)
diffhist Memory management unit 00:05 0 Guy Harris talk contribs (→Types of address translation: Put paged translation before segmentation plus paging. (The section on paged will be fixed not to claim it differs from what is used now.))
diffhist Memory management unit 00:03 +10 Guy Harris talk contribs (→Historical systems: Use this section to describe the different types of translation, including paged (the description of which will cover modern paged translation).)

2 May 2025

diffhist Memory management unit 23:55 −71 Guy Harris talk contribs (Start out with a history section, mentioning segmentation, segmentation+paging, and paging. This needs a lot more work to get rid of the notion of "paged translation" and "paging"/"demand paging"/whatever being two different things. (No, the 68000-systems reference isn't correct; they *aren't* different things. The author's a hardware engineer, and doesn't seem to be familiar with Sun's 68k-based pre-68030 systems, so maybe he doesn't get what "demand paging" is about.))
diffhist Memory management unit 23:34 +208 Guy Harris talk contribs (Use the Wayback Machine for a now-dead link.)
diffhist Wikipedia:What Wikipedia is not 22:56 +31 Awesome Aasim talk contribs
diffhist Wikipedia:What Wikipedia is not 22:55 +381 Awesome Aasim talk contribs (reword nutshell in numbered format going from top to bottom) Tag: Disambiguation links added
diffhist m IBM 19:19 0 Eletroboss talk contribs (→Mainframe computers)
diffhist Module:WikiProject banner/auxiliary 17:49 −1 Jonesey95 talk contribs (fix class to match one that is actually in our style sheet. See talk.)
diffhist Computer 06:01 −4 Eem dik doun in toene talk contribs (Undid revision 1288321094 by Steel Pineapple (talk) not needed to link to such common words) Tags: Undo Mobile edit Mobile web edit Advanced mobile edit

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