DOS ain't dead

How to detect the text mode? (Developers)

posted by jassenna, Campinas,SP,Brazil, 01.02.2021, 00:02

tkchia said:

> Thanks, interesting. But I see that, like int 0x10, ax = 0x4f03, it is not
> supported by all BIOSes, so one will need to fall back on one of the other
> detection methods (e.g. int 0x10, ah = 0x0f), in any case...

Do you know any (EGA ir later) video adapter that
does not support this function ? I am interested
because I have used few adapters and all did work,
but design of a fallback would depend on how often
one shall find an incompatible video BIOS.

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