power up reset question

Hi,

Background: Spartan 3 FPGA, Xilinx 6.3 tools

I am currently having a problem with what I think is a power up reset.
I have a fairly complicated design consistings of several state
machines and a controller. I can get this to work easily by either
downloading to the eeprom without powering off as well as simply
downloading the bit file over jtag. However, when I power off and on
the firmware no longer works. I know this particular board works with a
much simpler version of this bit file, and has no problems with
powering up.

Is the fact that my new design is more complicated allowing a power up
reset problem to come into focus because the older versions of this
were much simpler and not as prone to these types of problems? Is there
some way to put a counter on the spartan 3 and do a global reset with
it?

Tomorrow I think I will try to wire a hard reset onto the board but it
is going to be a pain, I hope someone else might have encountered and
solved a similar problem.

thanks,
wolf

.

Relevant Pages

  • Re: [PATCH] libata: implement ata_wait_after_reset()
    ... power down and hibernate. ... Don't controllers support spread spin up of disks, ... Or just move to async reset. ...
    (Linux-Kernel)
  • Re: More TZ resets
    ... used, dryer running, etc., can cause the voltage to drop as well if the game ... One other possible cause if you are using one is a power strip. ... on and couldn't figure out what was causing one of his games to reset. ... either flipper and the machine reset. ...
    (rec.games.pinball)
  • Re: Canon iP4000 Waste ink resetter.
    ... But you have to pull the plug because most stuff, including your printer, are not really off when you use the switch to turn it off. ... The message contains the exact information needed not only on how to reset the waste ink counter, but also how to print a status information page. ... press and hold the Power button. ... The LED lights in green to indicate that a function is selectable.) ...
    (comp.periphs.printers)
  • Re: PIC code self-start execution
    ... I've ensured that MCLR is high through a power on reset connected as ... with poor programmer connections. ...
    (sci.electronics.design)
  • Re: PC doesnt start
    ... Before a computer can start after power supply turns on, first, all ... electronics must receive a reset signal. ... When you pressed the front power switch, ... 'Reset circuit' on motherboard' then resets and ...
    (microsoft.public.windowsxp.hardware)