Talk:Intel 8087

message: I want to  meaning intel 8087 in malay.but i canot faind in the internet.so to everwone plese healp me to find the meaning intel 8087  in malay. How many transistors in the 8087?
: There were 45.000 transistors in a 8087 (you can find it in the article). Intel 8087 (at least) were indeed manufactured in Malaysia, see here. --Dirk P Broer (talk) 23:22, 12 December 2011 (UTC)
thread_title: Number of Transistors

message: Should add that the 8087 (and later the 80287) received a significant boost when IBM included coprocessor slots on all its early IBM PC motherboards... AnonMoos (talk) 06:22, 18 March 2008 (UTC)
replies: text: When this was directly copied into the article, it created an inaccuracy, since the IBM PCjr did not include a numeric coprocessor slot (though the PC, PC-XT, and PC-AT did). AnonMoos (talk) 16:58, 13 December 2011 (UTC)
replies: text: Neither did the IBM PC Convertible (according to the Mueller book), though that didn't cost Intel many 8087 sales. --Wtshymanski (talk) 19:42, 16 December 2011 (UTC)
thread_title: IBM

message: 80487 is not a math co-processor as it appears from the Successors paragraph. 80487 is a complete 80486DX CPU with slightly different pin out.  — Preceding unsigned comment added by Skiselev (talk • contribs) 22:12, 2 November 2011 (UTC)
replies: text: I believe I have this covered in here. --Dirk P Broer (talk) 23:17, 12 December 2011 (UTC)
thread_title:  Reference to 80487 

message: (To find out how many cells this table should have: 3 bits in the first bite of the opcode and 8 bits in the second bite, means 2^11 = 2048 opcodes reserved for the FPU. The table uses 2 cells per opcode in order to pair the opcodes and mnemonics.)
I wonder whether this is the place for a table which has (or should have) 4096 cells. (Even if many are blank.)
In any case, the cells are not arranged properly. One expects to see all the D8xx opcodes together, followed by the D9xx, and so forth. It seems that, because of the width of the table, it was decided to do it in two halves, with yy00 through yy7F in the first half and yy80 through yyFF in the second half, or something like that. But even so, many things are in the wrong columns, which confused me quite a lot.
If you are going to keep the table, it should be repaired. (Also, the wiki software sometimes interprets the indirection brackets as wikilinks.) Note that there is no reference for the data in the table.
It is clear that there is a full set of operations for 32- and 64-bit reals, and perhaps also for 16- and 32-bit signed integers, but the only obvious operations for 64-bit integers and packed BCD numbers are loading and storing. What are all the operations with a P suffix? Are the 64-bit integers and BCDs handled together by the P operations? If so, what about decimal adjust operations for BCDs? This would be interesting information, even without the very fine detail of the table.
  Solo Owl   06:38, 2 September 2015 (UTC)
replies: text: I agree that such a large table seems like overkill. A better approach would be to list all of the instructions (i.e., instead of all of the opcodes), including a short description of each, perhaps also including the addressing modes they use. This would be a shorter list/table and accomplish the same thing. — Loadmaster (talk) 17:02, 2 September 2015 (UTC)
thread_title:  Table of opcodes and instructions 

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thread_title:  External links modified 

message: Maybe there should be a sentence in the first paragraph explaining how the 8087 was the first "serious" numerics widely-available in hardware form for microcomputer users (somebody else might be able to phrase this better than I could). I remember reading in a mid-1980s computer magazine about how a scientist got a personal computer in his lab, and could then run his calculations overnight, instead of having to reserve time on the university mainframe.  Then he plugged an 8087 into his PC-XT (I believe it was), and could run the calculations in an hour or two... AnonMoos (talk) 08:55, 5 December 2019 (UTC)
thread_title:  Summary of significance