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40-column TV text — Parallax Forums

40-column TV text

BuddhaBuddha Posts: 25
edited 2006-07-01 01:12 in Propeller 1
Is 40-column TV text output possible with the built-in video generator? Specifically, it would be nice to get at least 40x15 characters on screen for a 640x480 resolution. And what about pushing it up to 45 columns for DVD (720x480) resolution? Is this something the NTSC video generator can handle? Any hints on how to make this work? [noparse]:)[/noparse]

Comments

  • CJCJ Posts: 470
    edited 2006-06-30 21:40
    I haven't seen anything like that for the TV, but Chip's High res text driver can hande 128x64 text on 1024 by 768 vga video

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Who says you have to have knowledge to use it?

    I've killed a fly with my bare mind.

    Post Edited (CJ) : 6/30/2006 9:49:43 PM GMT
  • Phil Pilgrim (PhiPi)Phil Pilgrim (PhiPi) Posts: 23,514
    edited 2006-06-30 22:05
    Try Chip's tv_text object, http://forums.parallax.com/showthread.php?p=587524, or my tv_wtext object, http://forums.parallax.com/showthread.php?p=590631, which is based on Chip's work.

    -Phil
  • NewzedNewzed Posts: 2,503
    edited 2006-06-30 23:47
    Will this work on my TV_terminal or is it just for a VGA monitor?

    Sid
  • Phil Pilgrim (PhiPi)Phil Pilgrim (PhiPi) Posts: 23,514
    edited 2006-06-30 23:55
    These objects are designed to work with a TV monitor.

    -P.
  • NewzedNewzed Posts: 2,503
    edited 2006-07-01 00:08
    Are you talking about a computer monitor or a regular TV.· If a regular TV, how do I tell the program my TV starts on pin 12?

    Thanks

    Sid
  • Mike GreenMike Green Posts: 23,101
    edited 2006-07-01 00:15
    Both tv_text and tv_wtext use an underlying tv driver that normally produces video that can be connected to a tv with a video input (or a computer monitor with a video input). Typically a video input is used for connecting to a DVD player or video tape player. With some changes to a parameter table in the tv object, it will put out a broadcast signal that can be received by a standard television on one of the low numbered channels (usually 3). Look at the code for tv.spin. The tv_pins, tv_mode, and tv_broadcast parameters will need to be changed so that a "broadcast" signal will be put out on the 4 pin set that has the appropriate resistors and RCA connector. tv_broadcast would be 60_000_000 for channel 3.
  • Phil Pilgrim (PhiPi)Phil Pilgrim (PhiPi) Posts: 23,514
    edited 2006-07-01 01:12
    Sid,

    The parameter to the start routine in each object is the number of the base pin for video output.

    -Phil
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