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Bug #17

closed

NTSC crashing on some builds

Added by foft almost 7 years ago. Updated about 6 years ago.

Status:
Closed
Priority:
Normal
Assignee:
-
Start date:
05/12/2017
Due date:
% Done:

0%

Estimated time:

Description

Investigate why... On the v1 core this occurred when running the PLL at very high fVCO. However we already fixed that in v1, so not sure why.


Related issues 1 (0 open1 closed)

Related to Bug #34: Problem booting with Core 9Closedfoft06/03/2017

Actions
Actions #1

Updated by foft almost 7 years ago

Ijor recommended I try registering the input directly from SDRAM. I've done this and see if it helps.

He is also kindly helping me write some correct timequest rules, really appreciated:)

Actions #2

Updated by foft almost 7 years ago

I've still had bad builds since registering the sdram input directly.

I tried to specify an externally switchable input clock for timequest as a proxy for ntsc/pal clocks. However it doesn't make it past derive_pll_clocks, so I guess I need to define multiple pll outputs. I'm not sure of the impact here in terms of clock grouping definitions etc.

Actions #3

Updated by foft almost 7 years ago

Interesting when I build on AWS I get completely screwed up builds with the registered sdram input. Seemingly every time.

Actions #4

Updated by foft almost 7 years ago

  • Priority changed from Normal to High
Actions #5

Updated by ndary almost 7 years ago

changed the Core to v8 and when chancing the video mode to NTSC the screen crashes

Nir

Actions #6

Updated by sadosp almost 7 years ago

ndary wrote:

changed the Core to v8 and when chancing the video mode to NTSC the screen crashes

Nir

I remember that this was ok in mine board. Are you use the prototype 2 area to get the firmware?

Actions #7

Updated by foft almost 7 years ago

  • Related to Bug #34: Problem booting with Core 9 added
Actions #8

Updated by foft about 6 years ago

  • Priority changed from High to Normal

Not seen this for months, think it was an issue around this time that has been fixed. Marking as normal priority for now.

Actions #9

Updated by foft about 6 years ago

  • Status changed from New to Closed

On second thoughts... closing until we see it again.

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