DOS ain't dead

How to detect the text mode? (Developers)

posted by Laaca , Czech republic, 14.11.2020, 11:00

It was slightly mentioned in the DWED text editor thread - the cooperation with various text modes.
I like when the text mode program can cooperate with the already set text mode and does not try to change it into own mode. My beloved Volkoc commander works in this way.
But, when the graphic mode is present, it is not more possible to use the standard videomemory access scheme (segment B800h, even addresses chars, odd addresses attributes).
So the question is, how to easily distinguish between text mode and graphic mode.

I might thing that I am idiot, but I am looking for scheme working in various tweaked modes (like 90x28), SVGA text modes and special tweaked modes set by utility SVGATextMode which are basicaly graphic modes but somehow modified to be allowed the text mode videomemory access scheme.

---
DOS-u-akbar!

Complete thread:

• How to detect the text mode? - Laaca, 14.11.2020, 11:00 (Developers)
  • How to detect the text mode? - Japheth, 14.11.2020, 16:01
    • How to detect the text mode? - tkchia, 15.11.2020, 08:01
    • How to detect the text mode? - jassenna, 30.12.2020, 17:56
      • How to detect the text mode? - tkchia, 31.12.2020, 08:16
        • How to detect the text mode? - jassenna, 01.02.2021, 00:02
          • How to detect the text mode? - tkchia, 01.02.2021, 14:26
            • How to detect the text mode? - rr, 01.02.2021, 17:56
  • How to detect the text mode? - DosWorld, 15.11.2020, 15:12
    • How to detect the text mode? - Japheth, 15.11.2020, 17:13
      • How to detect the text mode? - DosWorld, 15.11.2020, 18:49
  • How to detect the text mode? - bretjohn, 31.12.2020, 17:52