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Data files for FlaviaLB56 release 0.0n

Data files for the FlaviaLB56 implementation of the Free Logic Array, described in Flavia: the Free Logic Array and Chapter 12 of The XXICC Anthology rev 0.0n.  FlaviaLB56 is for the ValentF(x) LOGI-Bone FPGA board.  To reduce chances of confusion, I recommend that you only install this file if you want to synthesize Flavia logic for the LOGI-Bone.

 

Flavia is part of XXICC.  For more information on XXICC, see the 'blog post XXICC (21st Century Co-design) release 0.0n and XXICC's home page: xxicc.org.

 

This work is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License.  To view a copy of this license, visit creativecommons.org/licenses/by-sa/3.0/.  No warranty is expressed or implied.

 

Update 22 May 2015: FlaviaLB56 has only been tested on LOGI-Bone R1.0.  It has not been tested on LOGI-Bone-2, labeled R1.5.1.  I don't know if any LOGI-Bone-2 changes affect Flavia.

 

FlaviaLB56 also works on with XXICC (21st Century Co-design) release 0.0p.  I've only tested it with the "use JTAG" option, using an Adafruit FT232H Breakout Board as a JTAG controller.  You should be able to use "synthesis pinout".  However, you cannot configure pull-up, pull-down, and keeper circuits on I/Os.

johnbeetem

  • I've started looking into LOGI-Bone-2 changes and whether they affect Flavia.  LOGI-Bone-2 has a different I2C GPIO expander and changes its pin assignment, so programming LOGI-Bone-2 directly from BBone is definitely different.  Flavia 0.0n (the last version I've tried for direct programming) programs LOGI-Bone by writing a bitstream to /dev/logibone.  This is equivalent to "dd" from the command line.  From looking at the documentation at ValentF(x) http://valentfx.com/wiki/index.php?title=Logi-Bone_User_Guide#Programming_the_FPGA_from_the_BeagleBone, it looks like you now need to write the bitstream to /dev/LOGIbone.  Since GNU/Linux is case-sensitive, this means Flavia probably won't work unless you go into Xbitscan.gal and change "/dev/logibone" to "/dev/LOGIbone".  However, first try downloading a test image using "dd".

     

    Another change with LOGI-Bone-2 is that they changed the default FPGA configuration mode from Slave Serial to Master Serial/SPI, i.e., self-config.  So when you power it on, LOGI-Bone-2 tries to read a valid bitstream from on-board serial Flash.  Flavia can override it, but if there's a valid bitstream it will affect whatever you have hooked up to LOGI-Bone-2 bins.

     

    There may be other changes that affect Flavia.  I don't have a LOGI-Bone-2 board to test things out at this time.