VGA Text 1440x900 modification possible?

Comments

• RossH Posts: 5,627

  2009-05-04 00:20 edited 2009-05-04 00:20

  Hi Tom,
  
  I don't think so. I did a bit of mucking around with VGA drivers and managed to get one to support both text and bitmapped graphics at 1152x864. But it took 5 cogs to do it. I think beyond that point you just run out of speed on the Prop. You certainly run out of both cogs and RAM!
  
  Of course (having said that) Chip Gracey (amongst others!) always seems to find clever ways to do things that everyone had previously thought impossible - so you never really know.
  
  Ross.
• Mike Green Posts: 23,101

  2009-05-04 00:33 edited 2009-05-04 00:33

  There was a 1280 x 1024 using 3 cogs for video plus one for an optional cursor and a 1600 x 1200 using 5 cogs plus one for a cursor. You might be able to modify the 1600 x 1200 driver for 1152 x 864, but that doesn't leave much memory or cogs for anything else.
• RossH Posts: 5,627

  2009-05-04 00:40 edited 2009-05-04 00:40

  See?
  
  I was right in that I would probably be proved wrong [noparse]:)[/noparse]
  
  Ross.
• Rayman Posts: 15,391

  2009-05-04 01:09 edited 2009-05-04 01:09

  Are you trying to do widescreen? I think someone was able to convert the 1280 x 1024 driver to 1280x768 a while ago...
  
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• FrameShift. Posts: 35

  2009-05-04 01:44 edited 2009-05-04 01:44

  yes, widescreen 19" lcd.
• Rayman Posts: 15,391

  2009-05-04 01:54 edited 2009-05-04 01:54

  Here's that thread I was thinking about:
  
  http://forums.parallax.com/showthread.php?p=729339
  
  It has the timings you need to do widescreen...
  
  ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
  visit http://www.rayslogic.com