Re: [Milkymist-devel] NOR Flash torture testing - background and results so far

2011-10-06 Thread sebastien . bourdeauducq
On Thu, 06 Oct 2011 11:00:04 +0200, sebastien.bourdeaud...@lekernel.net wrote: I think the FPGA should already have those internally (the same pull-ups that make the LEDs go dimly lit when the FPGA is unconfigured). But maybe there are glitches or something? ug380 seems to say there are: "FOE_

Re: [Milkymist-devel] NOR Flash torture testing - background and results so far

2011-10-06 Thread sebastien . bourdeauducq
On Wed, 5 Oct 2011 09:55:14 -0300, Werner Almesberger wrote: Uwe Bonnes wrote: In the schematic (page 7 of rc3_schematic.pdf), I don't see a pull-up on the JS28F256 CE0 pin and neither on we_n. Shoudn't these pullup help too? This sounds like a very good idea to me. Also Xilinx have 4.7 kOhm

Re: [Milkymist-devel] NOR Flash torture testing - background and results so far

2011-10-05 Thread Werner Almesberger
Uwe Bonnes wrote: > In the schematic (page 7 of rc3_schematic.pdf), I don't see a pull-up on > the JS28F256 CE0 pin and neither on we_n. Shoudn't these pullup help too? This sounds like a very good idea to me. Also Xilinx have 4.7 kOhm pull-ups in their reference design in figure 2-20 on page 48 o

Re: [Milkymist-devel] NOR Flash torture testing - background and results so far

2011-10-05 Thread Uwe Bonnes
> "Werner" == Werner Almesberger writes: Werner> Summary: automated testing produced results consistent with the Werner> work-arounds for NOR corruption indeed working a expected, but Werner> do not yet provide a conclusive confirmation. Further testing to Werner> focus on val

[Milkymist-devel] NOR Flash torture testing - background and results so far

2011-10-04 Thread Werner Almesberger
Summary: automated testing produced results consistent with the work-arounds for NOR corruption indeed working a expected, but do not yet provide a conclusive confirmation. Further testing to focus on validating improved rc4 circuit. Background: During the last weeks, I've been torture-te