; +++Date last modified: 05-Jul-1997 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