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INCLUDE "std primitives"; 
INCLUDE "matrix printer"; 
 
PLOTTER "NEC P9 MD",2,15,2340,1984,33.02,27.99644;
 
COLORS "000999";

(* Version vom 21.10.87 BJ *) 
 
(* Globale Daten fuer NEC P9 *) 
 
LET md p9 graf  = ""27"*"39"",    (* Nec P9 in 24-Nadel 180 Pixel/zoll Modus *) 
    md p9 feed  = ""28"3",        (* Zeilenabstand in 360 Pixel/Zoll setzen *) 
    md p9 nlq   = ""27"x"1"",     (* NLQ Modus waehlen *) 
    md p9 pos   = ""27"\";        (* in 1/180 Zoll-Schritten rel Positionieren *) 

LET md p9 x max   = 2339, 
    md p9 y max   = 1979, 
    md p9 y lines = 124,         (* y pixel / 16 (Punkte pro INT) *) 
    md p9 x per ds= 780,         (* Maximale x pixel pro Dataspace ( Darf *) 
                                 (* Nicht mehr als 256 K sein !!!     *) 
                                 (* x per ds = 256 * 1024 / p9 y lines / 4 *)
    md p9 x lines = 3;           (* x pixel / hd p9 x per ds *) 
 
LET MDPYLINE = ROW md p9 x per ds INT, 
    MDPSMAP  = ROW md p9 y lines MDPYLINE, 
    MDPMAP   = ROW md p9 x lines BOUND MDPSMAP; 
 
MDPMAP VAR md p9 map; 

ROW md p9 x lines DATASPACE VAR md p9 ds;

INT VAR md p9 x pos, md p9 y pos;
 
(* Globale Daten Ende *) 

PROC prepare: 
  REP 
   call (29, "", printer); (* wait for halt *) 
   IF task(channel(plotter)) = niltask   (* Es koennte der HD worker dran sein *) 
     THEN continue (channel (plotter))   (* der startet den PRINTER wieder ! *) 
     ELSE pause(300)                     (* folge : Kanal belegt -> dead *)
   FI
 UNTIL channel(myself) = channel(plotter) PER
END PROC prepare;
 
PROC initplot: 
  INT VAR md p9 i; 
  FOR md p9 i FROM 1 UPTO md p9 x lines REP 
    md p9 ds[md p9 i] := nilspace; 
    md p9 map[md p9 i] := md p9 ds[md p9 i]
  PER
END PROC initplot; 
 
PROC endplot: 
  md p9 put map;
  break(quiet);
  call (26, "", printer);  (* start spool *)
  enable stop
END PROC endplot; 
 
PROC md p9 put map: 
  open graf; 
  put map; 
  close graf;
  forget dataspaces.
 
  open graf: 
    out(md p9 feed + ""32"");  (* LF auf 16/180 Zoll setzen *)
    out(md p9 nlq).   (* NLQ Modus waehlen, damit Positionierung in 1/180 *) 
                      (* Schritten geht (sonst 1/120) *) 
  close graf: 
    out(""12"").      (* Form Feed ! Drucker muss auf richtige Seitenlaenge *) 
                      (* eingestellt sein (EUMEL-DR macht kein FF) *) 
 
  forget dataspaces: 
    INT VAR i;
    FOR i FROM 1 UPTO md p9 x lines REP 
      forget(md p9 ds[i]) 
    PER. 
 
  put map: 
    INT VAR j; 
    FOR j FROM 1 UPTO md p9 y lines REP 
      put line; 
    PER. 
 
  put line: 
    INT VAR actual pos :: 0, (* actual pos : aktuelle x-position 0..x max*)
            last pos;
    WHILE actual pos <= md p9 x max REP 
      put blank cols; 
      put nonblank cols 
    PER;
    line.
 
  put blank cols: 
    last pos := actual pos; 
    WHILE actual pos <= md p9 x max CAND actual col is blank REP 
      actual pos INCR 1 
    PER; 
    IF actual pos > last pos AND actual pos <= md p9 x max
      THEN out blank cols 
    FI. 
 
  put nonblank cols: 
    last pos := actual pos; 
    WHILE actual pos <= md p9 x max CAND NOT actual col is blank REP 
      actual pos INCR 1 
    PER; 
    IF actual pos > last pos
      THEN out nonblank cols 
    FI. 
 
  out blank cols: 
    TEXT VAR t :: "  "; 
    replace(t, 1, actual pos - last pos); 
    out (md p9 pos + t).
 
  out nonblank cols: 
    t := "  "; 
    replace (t,1, actual pos - last pos); 
    out(md p9 graf + t); 
    INT VAR k;
    FOR k FROM last pos UPTO actual pos - 1 REP
      INT VAR word :: md p9 map [(k DIV md p9 x per ds) + 1][j] 
                                [(k MOD md p9 x per ds) + 1], 
              first byte :: word; 
      rotate (word, 8);
      out (code (word));
      out (code (first byte));
      out (""0"")
    PER.
 
  actual col is blank: 
    md p9  map [(actual pos DIV md p9 x per ds) + 1][j]
               [(actual pos MOD md p9 x per ds) + 1] = 0 
 
END PROC md p9 put map; 
 
PROC clear: 
  md p9 clear
END PROC clear;

PROC md p9 clear: 
  create initline;
  initialize all lines.

  create initline: 
    MDPYLINE VAR initline; 
    INT VAR i; 
    FOR i FROM 1 UPTO md p9 x per ds REP 
      initline[i] := 0 
    PER. 
 
  initialize all lines: 
    INT VAR k; 
    FOR i FROM 1 UPTO md p9 x lines REP
      FOR k FROM 1 UPTO md p9 y lines REP 
        md p9 map[i][k] := initline 
     PER
   PER
END PROC md p9 clear; 
 
PROC home: 
  move to (0,0)
END PROC home;

PROC moveto (INT CONST x,y): 
  md p9 x pos := x;
  md p9 y pos := y
END PROC moveto;
 
PROC drawto (INT CONST x,y): 
  printer line (md p9 x pos,md p9 y max - md p9 y pos,
                x, md p9 y max - y,
                PROC (INT CONST, INT CONST) md p9 set pixel);
  md p9 x pos := x;
  md p9 y pos := y
END PROC drawto;

PROC setpixel (INT CONST x,y): 
  md p9 set pixel (x, md p9 y max - x)
END PROC setpixel;

PROC md p9 set pixel (INT CONST x,y):
  setbit (md p9 map [(x DIV md p9 x per ds) + 1][(y DIV 16) + 1] 
                    [(x MOD md p9 x per ds) + 1],15 - (y AND 15))
END PROC md p9 set pixel;

BOOL PROC md p9 is pixel (INT CONST x,y):
  bit (md p9 map [(x DIV md p9 x per ds) + 1][(y DIV 16) + 1] 
                 [(x MOD md p9 x per ds) + 1],15 - (y AND 15))
END PROC md p9 is pixel;

PROC foreground (INT VAR type): 
  type := 1
END PROC foreground;

PROC background (INT VAR type):
  type := 0
END PROC background; 
        
PROC setpalette: 
END PROC setpalette;

PROC circle (INT CONST x,y,rad,from,to): 
  std circle (x,y,rad,from,to) 
END PROC circle; 
 
PROC box (INT CONST x1,y1,x2,y2,pattern): 
  std box (x1, y1, x2, y2, pattern)
END PROC box; 

PROC fill (INT CONST x,y,pattern): 
  printer fill (x,x,md p9 y max - y,1, 
                BOOL PROC (INT CONST, INT CONST) md p9 is pixel, 
                PROC (INT CONST, INT CONST) md p9 set pixel) 
END PROC fill;