Why Some Assembly Instruction Are not Documented

There are some Assembly instruction in Delphi Source Codes which I cannot found anywhere in Assembly Cheat Sheets including:

1. fld
2. fabs
3. fcompp
4. fstsw

I read these assembly instructions in "Power" function; But I cannot found them in this cheat sheet or similar cheat sheets.

Does these instructions are not belong to 8086, 8088 CPU instruction开发者_开发问答s? or Simply these instructions are not included in these Cheat Sheets?

Is there a good Web Page which list all Assembly instructions?

These are all floating point instructions, which (primarily for historical reasons) are often documented separately from integer instructions. For a more authoritative reference, consider looking at the Intel manual.

These seem to be floating point instructions. In the old times, a separate chip implemented these (8087), so lists of instructions as the one you link avoided those operations. Anyway, you can find them in any more recent assembly manual, because floating point instructions were inserted into the same chip long ago. Look at this, for example.

Never mind. I found the list of All 8086 Assembly instructions here:

http://en.wikipedia.org/wiki/X86_instruction_listings