1 files changed, 37 insertions, 0 deletions
diff --git a/reference/C/CONTRIB/SNIP/hires.asm b/reference/C/CONTRIB/SNIP/hires.asm
new file mode 100755
index 0000000..1c83f68
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+++ b/reference/C/CONTRIB/SNIP/hires.asm
@@ -0,0 +1,37 @@
+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