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ffconfig: clean up readme 

Signed-off-by: John McMaster <JohnDMcMaster@gmail.com>
Signed-off-by: Tim 'mithro' Ansell <mithro@mithis.com>
This commit is contained in:
John McMaster 2017-11-28 17:38:02 -08:00 committed by Tim 'mithro' Ansell
parent 6ee294072d
commit bdb216c651
1 changed files with 6 additions and 10 deletions
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16
fuzzers/011-ffconfig/README.txt
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@ -1,16 +1,12 @@
Documents the following:
-FF clock inversion
-FF primitive mapping
-FF initialization value
Clock inversion is per slice (as BEL CLKINV)
Vivado GUI is misleading as it often shows it per FF, which is not actually true
CLB.SLICE_X0.AFF.FF_INV_CLK 00_51
CLB.SLICE_X1.AFF.FF_INV_CLK <0 candidates>
Clifford suggests X1 may be in adjacent tile
as he found with X1 INIT values
More research needed
FSYNC LATCH ZRESET
FFSYNC LATCH ZRST
Sample 00_48 30_32 30_12
FDPE
FDSE X