Illegal opcode: Revision history

Filter revisionsshowhide

To date:

Tag filter:

Invert selection

External tools:

For any version listed below, click on its date to view it. For more help, see Help:Page history and Help:Edit summary. (cur) = difference from current version, (prev) = difference from preceding version, m = minor edit, → = section edit, ← = automatic edit summary

curprev 19:1619:16, 15 September 2023‎ Bumm13 talk contribs‎ m 9,972 bytes 0‎ →‎See also: punctuation fix undo
curprev 19:1519:15, 15 September 2023‎ Bumm13 talk contribs‎ m 9,972 bytes +51‎ pointed "Apple II" wikilink to "Apple II series" -- (disambiguation) undo

curprev 03:2903:29, 19 January 2023‎ Guy Harris talk contribs‎ 9,921 bytes −117‎ →‎Further reading: It's live. The archived version points to archived versions of the PDF and the TeX source, so no need for us to archive them ourselves. undo
curprev 02:5802:58, 19 January 2023‎ InternetArchiveBot talk contribs‎ 10,038 bytes −92‎ Rescuing 1 sources and tagging 0 as dead.) #IABot (v2.0.9.3 undo

curprev 09:5109:51, 21 July 2022‎ Tetraxile talk contribs‎ 10,130 bytes 0‎ →‎top: Fixed typo undo Tags: canned edit summary Mobile edit Mobile app edit Android app edit

curprev 00:5600:56, 29 June 2022‎ Punpcklbw talk contribs‎ m 10,174 bytes +8‎ →‎See also: Updated undocumented-x86 link undo

curprev 09:2409:24, 13 May 2022‎ Guy Harris talk contribs‎ 10,166 bytes +108‎ Use "trap" for the illegal instruction action (trap (computing) just redirects to interrupt, but it more clearly distinguishes the effect from an asynchronous interrupt from an I/O device). Note that every processors that trap on most illegal opcodes might not do so for *all* illegal opcodes. undo
curprev 09:0809:08, 13 May 2022‎ Guy Harris talk contribs‎ 10,058 bytes +214‎ Note that, on many processors, those opcodes just cause a Boring Old Illegal Instruction Trap; they don't do something interesting. undo
curprev 09:0209:02, 13 May 2022‎ Guy Harris talk contribs‎ 9,844 bytes −12‎ Clean up reference. (And note that the previous edit summary was to say "(although it also uses "unimplemented operations" to refer to documentation-defined opcodes on processors that don't have the optional feature for those opcodes installed)".) undo
curprev 08:5908:59, 13 May 2022‎ Guy Harris talk contribs‎ 9,856 bytes −187‎ In the previous reference, that section speaks of *privileged instructions run in user mode* as "illegal operation codes"; those are *not* instructions not mentioned in the documentation, as they *are* mentioned. Point to a section in the *processor* manual about opcodes that aren't assigned (although it uses undo

curprev 19:3419:34, 20 March 2022‎ Citation bot talk contribs‎ 10,043 bytes +21‎ Add: website. | Use this bot. Report bugs. | Suggested by Whoop whoop pull up | #UCB_toolbar undo

curprev 21:1421:14, 10 January 2022‎ Cewbot talk contribs‎ m 10,022 bytes +1‎ Normalize {{Multiple issues}}: Merge 1 template(s) into {{Multiple issues}}: Split undo

curprev 14:2614:26, 3 January 2022‎ Matthiaspaul talk contribs‎ 10,017 bytes +48‎ →‎Overview: +links undo
curprev 14:1314:13, 3 January 2022‎ Matthiaspaul talk contribs‎ 9,969 bytes +23‎ →‎See also: +link undo
curprev 05:4305:43, 3 January 2022‎ Guy Harris talk contribs‎ 9,946 bytes −452‎ The PDP-6 and PDP-10 reserved opcodes 000 through 077 as traps - they're not undocumented - and the PDP-10, at least, reserved half of them for traps into the OS, so, yes, the PDP-10 *did* have system call instructions (the PDP-6 might not have had "trap to user mode" UUOs, so they might all have been inteded for system calls). Remove a paragraph that claims otherwise. undo
curprev 00:4200:42, 3 January 2022‎ Matthiaspaul talk contribs‎ 10,398 bytes +36‎ →‎See also: +link undo

curprev 14:2214:22, 29 December 2021‎ AnomieBOT talk contribs‎ m 7,697 bytes +19‎ Dating maintenance tags: {{Split}} undo
curprev 14:0214:02, 29 December 2021‎ Chatul talk contribs‎ 7,678 bytes +99‎ Split proposed undo

curprev 21:3921:39, 12 August 2021‎ Rfc1394 talk contribs‎ m 5,119 bytes −4‎ used wrong name for system call undo
curprev 21:3321:33, 12 August 2021‎ Rfc1394 talk contribs‎ 5,123 bytes +585‎ →‎Overview: PDP10/20 undo

curprev 10:2110:21, 3 July 2021‎ Qwerfjkl talk contribs‎ m 4,538 bytes −3‎ Removed 'a(n)' from the beginning of the short description per WP:SDFORMAT, from a request at Wikipedia:Reward board. (via WP:JWB) undo

curprev 00:1600:16, 6 December 2020‎ Riventree talk contribs‎ m 4,541 bytes −38‎ →‎Overview: Definitely NOT guaranteed on any of the specified processors by Intel undo