1 files changed, 92 insertions, 0 deletions
diff --git a/reference/C/CONTRIB/SNIP/scrnmacs.h b/reference/C/CONTRIB/SNIP/scrnmacs.h
new file mode 100755
index 0000000..7caa4a4
--- /dev/null
+++ b/reference/C/CONTRIB/SNIP/scrnmacs.h
@@ -0,0 +1,92 @@
+/*
+**  Macros for managing direct video writes by Jerry Houston
+**
+**  prototypes for SCROLL.C and VIDPORT.C functions added by Bob Stout
+*/
+
+#if defined(__TURBOC__)
+ #define FAR far
+#else
+ #define FAR _far
+#endif
+ 
+#ifndef MK_FP
+ #define MK_FP(seg,off) ((void far *)(((long)(seg) << 16)|(unsigned)(off)))
+#endif
+
+/*
+**  Text screen scrolling function from SCROLL.C in SNIPPETS
+*/
+ 
+#define SCROLL_UP 0
+#define SCROLL_DN 1
+
+void scroll(int direction,
+            int num_lines,
+            int vattrib,
+            int ulrow,
+            int ulcomumn,
+            int lrrow,
+            int lrcolumn);
+
+/*
+**  Functions in VIDPORT.C in SNIPPETS
+*/
+ 
+void GotoXY(int col, int row);
+void ClrScrn(int vattrib);
+void GetCurPos(int *col, int *row);
+int  GetCurAtr(void);
+void ClrEol(void);
+void ClrEop(void);
+void Repaint(int vattrib);
+
+#if !defined(COLORMODE)
+ #define COLORMODE  ((*(char FAR *)0x0449) != 7)
+ #define EXT_KBD    (*(char FAR *)0x0496 & 16)
+ #define VIDPAGE    (*((unsigned char far *)0x0462))
+ #define ROWSIZE    (*(int FAR *)0x044A)
+ #define SCANLINES  ((int)*(char FAR*)0x0461)
+ #define SCRBUFF    ((unsigned FAR *)((COLORMODE)?0xB8000000:0xB0000000))
+ #define SCREENSEG  ((unsigned)((COLORMODE)?0xB800:0xB000))
+ #define SCREENSIZE ((*(int FAR *)0x044C) >> 1)
+ #define SCREENCOLS (*(int FAR *)0x044A)
+ #define SCREENROWS ((*(char FAR *)0x0484)?1+(*(char FAR *)0x0484):25)
+#endif
+
+/*
+     COLORMODE  = true/false, are we using color?
+     EXT_KBD    = true/false, extended keyboard in use?
+     VIDPAGE    = current video page in use
+     SCANLINES  = number of scan lines in a character.
+     SCRBUFF    = returns B800:0000 if using color, B000:0000 if mono.
+     SCREENSEG  = when you just need the segment portion.
+     SCREENSIZE = number of (2-byte) cells required to save screen.
+     SCREENCOLS = number of columns, often 80.
+     SCREENROWS = number of rows, usually defaults to 25.
+*/
+
+/*
+** colors -- Use as is for foreground colors
+**           For background, shift left by 4 and OR with
+**           foreground and possible video attributes
+*/
+
+#define BLACK 0
+#define BLUE 1
+#define GREEN 2
+#define CYAN 3
+#define RED 4
+#define MAGENTA 5
+#define BROWN 6
+#define WHITE 7
+#define GRAY 8
+#define LTBLUE 9
+#define LTGREEN 10
+#define LTCYAN 11
+#define LTRED 12
+#define LTMAGENTA 13
+#define YELLOW 14
+#define HIWHITE 15    /* hi-intensity white */
+
+#define BG_(a) (((a) & 0x7f) << 4)