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8 bit VGA — Parallax Forums

8 bit VGA

dr hydradr hydra Posts: 212
edited 2014-03-13 07:33 in Propeller 1
It there an easy way to do 8 bit VGA color(256 colors)...looking at the propeller manual it appears that only 6 bits are possible with the waitvid instruction

Comments

  • kuronekokuroneko Posts: 3,623
    edited 2014-03-11 16:45
    Been done already, you just have to know when to switch over. Don't have the link right now but if you dig though propellerpowered.com you'll find details for h/w and s/w.
  • msrobotsmsrobots Posts: 3,709
    edited 2014-03-11 17:05
    well Black Cat ...

    all links to propellerpowered are history. 404 wherever you go. Looks like Jeff shut down business.

    Enjoy!

    Mike
  • kuronekokuroneko Posts: 3,623
    edited 2014-03-11 17:08
    msrobots wrote: »
    all links to propellerpowered are history. 404 wherever you go. Looks like Jeff shut down business.
    Works for me (the link that is).

    For easy access, h/w description and latest driver source used with PropellerBASIC.
    zip
    zip
    waitvid.50xH.driver.2048 - Archive [Date 2013.01.02 Time 10.27].zip
    11K
    Vga256.png
    14K
  • RoadsterRoadster Posts: 209
    edited 2014-03-11 17:20
    here the schematic
    http://propellerpowered.com/forum/index.php?topic=274.msg1446#msg1446
  • msrobotsmsrobots Posts: 3,709
    edited 2014-03-11 22:19
    @kuroneko,

    well it brings you to a page where you can enter the shop in tindle, and the shop in tindle is gone.

    http://propellepowered.us/ his last new site is gone also.

    the forum link still works.

    Sad.

    Mike
  • mindrobotsmindrobots Posts: 6,506
    edited 2014-03-12 03:41
    The Propellerpowered forums are still active. The shop was moved to tindie and you are correct, it appears that Jeff's tindie presence is now gone also. How sad.
  • RoadsterRoadster Posts: 209
    edited 2014-03-12 03:50
    I got an email from tindie yesterday and the email stated that they here updating and restructuring their site, I found the propellerpowered store here:

    https://www.tindie.com/stores/Propellerpowered/
  • trodosstrodoss Posts: 577
    edited 2014-03-12 08:27
    @roadster,
    I received the same message as well. It will probably affect how OBC (or anyone else who has a store) in the future since "supplies" are being phased out on Tindie as items. I think that is to encourage more projects/kits being on the site rather than just IC's/connectors.
    On March 24th, we will retire supply products.

    At our core, we are growing a community of creators. We think this is the right move to ensure that we foster that environment and it isn’t squashed by bulk, resold products. This will hurt sales for the near term, but we think it is the right move for the community as a whole.

    A few questions have come up since this announcement yesterday:
    • What is a supply product?
      • Supply products are anything you didn’t design yourself, and are being resold.
    • Can I still include supply parts as a product option on a product I did create?
      • Yes you can. That is fine as long as you designed the main product.
    • I just bought a ton of parts. Can they stay in my store past the 24th?
      • Yes, we will leave products up on your own personal store. Just know they won’t be shown in browsing and search.

    @msrobots,
    The forums are still available here:
    http://www.propellerpowered.com/forum/index.php
  • Oldbitcollector (Jeff)Oldbitcollector (Jeff) Posts: 8,091
    edited 2014-03-12 10:21
    http://propellerpowered.com/forum/index.php?topic=566.0

    OBC
  • Cole LoganCole Logan Posts: 196
    edited 2014-03-12 11:07
    The one way I read about the supplies on tindie was you can still have supplies for sale but it won't show up in any searches.
  • dr hydradr hydra Posts: 212
    edited 2014-03-12 12:39
    Thank you for the links to the examples...now the hard part...understanding how the drivers works...

    The propeller manual states that during the WAITVID instruction.."For VGA, each color value’s upper 6-bits is the 2-bit red, 2-bit green, and 2-bit blue color components describing the desired color; the lower 2-bits are “don’t care” bits." I am guessing that you can still have data on the lower 2-bits and the WAITVID will output all eight bits..is that true? Normally the lower 2bits would be the Hsync and Vsync...but during pixel display those 2 lower bits can be used (making 8bits)...and some how you can move the Hsync and Vsync pins to a different grouping of pins. Is that the switching that Kuroneko is talking about?
  • jmgjmg Posts: 15,173
    edited 2014-03-12 14:53
    trodoss wrote: »
    @roadster,
    I received the same message as well. It will probably affect how OBC (or anyone else who has a store) in the future since "supplies" are being phased out on Tindie as items. I think that is to encourage more projects/kits being on the site rather than just IC's/connectors.

    Interesting move, but perhaps a little blunt-instrument like.

    eg someone selling development tools/programmers, might also want to include ICs in the offering.
    One is not much use, without the other...
  • kuronekokuroneko Posts: 3,623
    edited 2014-03-12 18:35
    dr hydra wrote: »
    Thank you for the links to the examples...now the hard part...understanding how the drivers works...
    During the visible lines the sync signals are constant so can be driven by setting outa to the relevant values. That leaves all 8 bit from the video shifter for colour. When you transition into e.g. HSYNC colours are 0 so you do the reverse, drive colours through outa and let the video h/w control the sync lines (different pin group) to get the correct timing. Easiest driver configuration is with positive sync polarities (idle state low). Anything else needs some extra care to avoid unclean signal transitions.
  • dr hydradr hydra Posts: 212
    edited 2014-03-13 07:33
    Kuroneko

    Got it...thank you...that is a big help
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