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| author | oharboe <oharboe@b42882b7-edfa-0310-969c-e2dbd0fdcd60> | 2009-02-18 09:09:11 +0000 |
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| committer | oharboe <oharboe@b42882b7-edfa-0310-969c-e2dbd0fdcd60> | 2009-02-18 09:09:11 +0000 |
| commit | 4d3b6e4163449a15563299e12cec64759811b658 (patch) | |
| tree | 7fdf1fc0e240854006ef626f128dc172cc85027c /doc | |
| parent | b7593457bce8b784c6fc7ced7f0a13b9a2391f8a (diff) | |
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Holger Schurig <hs4233@mail.mn-solutions.de> incorporate some comments from Rick
git-svn-id: svn://svn.berlios.de/openocd/trunk@1376 b42882b7-edfa-0310-969c-e2dbd0fdcd60
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/openocd.texi | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/doc/openocd.texi b/doc/openocd.texi index 9f2e8227..6d88d832 100644 --- a/doc/openocd.texi +++ b/doc/openocd.texi @@ -1509,9 +1509,12 @@ Tap Uses: parameters'', the required parameters are: @comment START REQUIRED @itemize @bullet -@item @b{-irlen NUMBER} - the length in bits of the instruction register -@item @b{-ircapture NUMBER} - the ID code capture command. -@item @b{-irmask NUMBER} - the corresponding mask for the ir register. +@item @b{-irlen NUMBER} - the length in bits of the instruction register, mostly 4 or 5 bits. +@item @b{-ircapture NUMBER} - the IDCODE capture command, usually 0x01. +@item @b{-irmask NUMBER} - the corresponding mask for the IR register. For +some devices, there are bits in the IR that aren't used. This lets you mask +them off when doing comparisons. In general, this should just be all ones for +the size of the IR. @comment END REQUIRED @end itemize An example of a FOOBAR Tap |