DOS ain't dead - working in more than 1280*1024 under Dos

working in more than 1280*1024 under Dos (Developers)

posted by freecrac, 28.08.2013, 06:29

For to get the capacity of the used CRT-monitor:
mov ax, 4F15h ; DDC - INSTALLATION CHECK xor bl, bl int 10h cmp ax, 4Fh jnz NODDC mov ax, 4F15h ; DDC - READ EDID mov bl, 1 xor cx, cx xor dx, dx mov di, OFFSET EDID ; es:di 128 byte int 10h cmp ax, 4Fh jnz short NODDC mov eax, 0FD000000h ; Text-identifier V/H range mov bx, 36h cmp eax, [di+bx] ; di+36h detailed timing #1 jz short RANGE lea bx, [bx+12h] ; alternative/substitute for "add bx,12h" cmp eax, [di+bx] ; di+48h detailed timing #2 jz short RANGE lea bx, [bx+12h] cmp eax, [di+bx] ; di+5Ah detailed timing #3 jz short RANGE lea bx, [bx+12h] cmp eax, [di+bx] ; di+6Ch detailed timing #4 jnz short NODDC RANGE: mov al, [di+bx+6] ; MAXHZ mov dl, [di+bx+8] ; MAXKHZ

EDID couldn't be readed if a CRT-Monitor is connected via a 5 pol. BNC-Monitor cable.

Public documents from http://www.vesa.org/ (Need register and/or login!)
Registation: https://fs16.formsite.com/VESA/form714826558/secure_index.html

vbe3.pdf
EEDIDguideV1.pdf
EEDIDverifGuideRa.pdf

Dirk

Post reply

Complete thread:

working in more than 1280*1024 under Dos - Damien, 22.04.2013, 21:17 (Developers)
- working in more than 1280*1024 under Dos - RayeR, 22.04.2013, 23:26
  - working in more than 1280*1024 under Dos - bretjohn, 23.04.2013, 17:47
    - working in more than 1280*1024 under Dos - RayeR, 23.04.2013, 22:25
      - working in more than 1280*1024 under Dos - bretjohn, 23.04.2013, 23:40
        working in more than 1280*1024 under Dos - Doug, 24.04.2013, 05:49
        working in more than 1280*1024 under Dos - RayeR, 24.04.2013, 12:43
        working in more than 1280*1024 under Dos - bretjohn, 24.04.2013, 18:32
        working in more than 1280*1024 under Dos - RayeR, 24.04.2013, 19:34
        working in more than 1280*1024 under Dos - bretjohn, 24.04.2013, 20:05
        working in more than 1280*1024 under Dos - RayeR, 25.04.2013, 10:41
        working in more than 1280*1024 under Dos - Doug, 26.04.2013, 05:05
        working in more than 1280*1024 under Dos - Damien, 26.04.2013, 17:06
        working in more than 1280*1024 under Dos - bretjohn, 26.04.2013, 18:34
        working in more than 1280*1024 under Dos - RayeR, 26.04.2013, 23:34
        working in more than 1280*1024 under Dos - Doug, 26.04.2013, 23:59
    - working in more than 1280*1024 under Dos - Zyzzle, 24.04.2013, 06:42
      - working in more than 1280*1024 under Dos - RayeR, 24.04.2013, 10:52
        working in more than 1280*1024 under Dos - Laaca, 25.04.2013, 07:33
      - working in more than 1280*1024 under Dos - bretjohn, 24.04.2013, 18:38
  - working in more than 1280*1024 under Dos - Damien, 01.05.2013, 17:47
    - working in more than 1280*1024 under Dos - RayeR, 02.05.2013, 17:17
      - working in more than 1280*1024 under Dos - Damien, 02.05.2013, 22:34
        working in more than 1280*1024 under Dos - RayeR, 06.05.2013, 20:00
        working in more than 1280*1024 under Dos - Damien, 07.05.2013, 18:56
    - working in more than 1280*1024 under Dos - tom, 02.05.2013, 18:12
      - working in more than 1280*1024 under Dos - Damien, 02.05.2013, 22:22
      - working in more than 1280*1024 under Dos - Zyzzle, 03.05.2013, 02:36
- working in LESS than 1280*1024 under Dos - DOS386, 28.04.2013, 15:26
  - working in LESS than 1280*1024 under Dos - Damien, 01.05.2013, 17:53
- working in more than 1280*1024 under Dos - freecrac, 28.08.2013, 06:27
  - working in more than 1280*1024 under Dos - freecrac, 28.08.2013, 06:29