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- 1. 80 x 50 on VGA
- =================
- mov ax,1202h ; select 400 scan line mode
- mov bl,30h
- int 10h
- mov ax,3 ; select 80 x 25 16 colour mode
- int 10h
- mov ax,1112h ; load 8x8 character set into RAM
- mov bl,0
- int 10h
-
- 2. 80 x 43 on EGA
- =================
- mov ax,3 ; establish 350 scan line mode
- int 10h ; and 80 x 25 16 colour mode
- mov ax,1112h ; 8x8 character set
- mov bl,0
- int 10h
- mov ax,40h ; update cursor size/ pointers
- mov es,ax
- mov dx,es:[63h]
- mov ax,060ah
- out dx,ax
- mov ax,000bh
- out dx,ax
- mov ax,12h ; set up new prtscr routine
- mov bl,20h
- int 10h
-
- Warnings:
- =========
- DOS's ANSI.SYS prior to DOS 5 has no comprehension of screens having more
- than 25 lines!
-
- Reference:
- "Programmer's Guide to PC and PS/2 Video Systems": author Richard Wilton.
- Microsoft Press 1988. ISBN 1-55615-103-9
-