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Bug #17

closed
FO

NTSC crashing on some builds

Bug #17: NTSC crashing on some builds

Added by foft over 8 years ago. Updated over 7 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

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FO Updated by foft over 8 years ago Actions #1

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:)

FO Updated by foft over 8 years ago Actions #2

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.

FO Updated by foft over 8 years ago Actions #3

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

FO Updated by foft over 8 years ago Actions #4

  • Priority changed from Normal to High

ND Updated by ndary over 8 years ago Actions #5

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

Nir

SA Updated by sadosp over 8 years ago Actions #6

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?

FO Updated by foft over 8 years ago Actions #7

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

FO Updated by foft over 7 years ago Actions #8

  • 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.

FO Updated by foft over 7 years ago Actions #9

  • Status changed from New to Closed

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

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