hw/i386.reference/WAIT.htm

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   4 <TITLE>80386 Programmer's Reference Manual -- Opcode WAIT</TITLE>
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   8 Chapter 17 -- 80386 Instruction Set</A><BR>
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  13 <P>
  14 <H1>WAIT -- Wait until BUSY# Pin is Inactive (HIGH)</H1>
  15
  16 <PRE>
  17 Opcode   Instruction   Clocks     Description
  18
  19 9B       WAIT          6 min.     Wait until BUSY pin is inactive (HIGH)
  20 </PRE>
  21
  22
  23 <H2>Description</H2>
  24
  25 WAIT suspends execution of 80386 instructions until the BUSY# pin is
  26 inactive (high). The BUSY# pin is driven by the 80287 numeric processor
  27 extension.
  28
  29 <H2>Flags Affected</H2>
  30
  31 None
  32
  33 <H2>Protected Mode Exceptions</H2>
  34
  35 #NM if the task-switched flag in the machine status word (the lower 16 bits
  36 of register CR0) is set; #MF if the ERROR# input pin is asserted (i.e., the
  37 80287 has detected an unmasked numeric error)
  38
  39 <H2>Real Address Mode Exceptions</H2>
  40
  41 Same exceptions as in Protected Mode
  42
  43 <H2>Virtual 8086 Mode Exceptions</H2>
  44
  45 Same exceptions as in Protected Mode
  46
  47
  48 <P>
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  50 <P>
  51 <B>up:</B> <A HREF="c17.htm">
  52 Chapter 17 -- 80386 Instruction Set</A><BR>
  53 <B>prev:</B><A HREF="VERR.htm"> VERR Verify a Segment for Reading or Writing</A><BR>
  54 <B>next:</B><A HREF="XCHG.htm"> XCHG Exchange Register/Memory with Register</A>
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