Jump to content

Playfield resolution doubling with DPC+?


Recommended Posts

I haven't been making anything in the past couple of years for the 2600 but this idea has been nagging me for a while. I'm probably blind and this has been asked many times before, but basically, would it be possible to "race the beam" turning playfield bits on/off mid drawing to "double" the playfeild resolution? Or even simpler, simulate a sub pixel offset for smoother scrolling?


I'm sure there are a few drawbacks to this like with reading pf bits directly, but it's worth a try

Link to comment
Share on other sites

48 minutes ago, Trip2018 said:

Naw I'm talking about horizontal resolution. Could we simulate, a smaller pixel width by turning pf pixel bits on/off mid drawing. Or is the hardware too slow?


That sure would be nice. Here's a related post talking about each playfield pixel being 4 color clocks wide:




Link to comment
Share on other sites

Batari Basic handles the display routine "under the hood", so "racing the beam" isn't really an option. Even with assembly, however, there's not a way to draw a partial PF pixel in the way that you describe. They are always going to be 4 color clocks in width, starting at the same offsets.

  • Like 1
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Create New...