jackcartersmith/xilinx-usb-driver
Archived
1
0
Fork 0
Code Releases Activity

add not about UseHIGHZ when programming with the parallel cable

Browse Source
This commit is contained in:
michael 2007-03-18 16:49:40 +00:00
parent 6f766a61c4
commit 0c71f276bd
1 changed files with 11 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
README
View File

@ -70,3 +70,14 @@ To use the device as an ordinary user, put the user in the group 'lp'
Parallel Cable IV is currently only supported in 'compatibility mode', as no Parallel Cable IV is currently only supported in 'compatibility mode', as no
attempt to configure the ECP registers is done by this library. attempt to configure the ECP registers is done by this library.
If you get "Programming failed" or "DONE did not go high" when programming
through the parallel cable with Impact 9.1, make sure to have the option "Use
HIGHZ instead of BYPASS" enabled in Edit -> Preferences -> iMPACT Configuration
Preferences.
If you are using batch mode, add the following line to your cmd file:
setPreference -pref UseHighz:TRUE
(This problem also occurs on windows and when using the real windrvr in linux and
is solved with the same workaround. Impact 8.2 is working fine with the same
boards and designs)