Service Manuals, User Guides, Schematic Diagrams or docs for : xerox mesa 3.0_1977 listing RectangleDefs.mesa_Oct77

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rectangledefs.mESA               24-0CT-77 18:38:25                                   Page 1


-- Rectangledefs.mesa   Edited by Sandman on May 24, 1977      9:13 AM
DIRECTORY
  Mopcodes: FROM "mopcodes",
  SegmentDefs: FROM "segmentdefs";
RectangleDefs: DEFINITIONS   =
  8EGIN
-- Magic memory locations and assoc. constants
 mousebuttonsup: CARDINAL    = 7;
-- Constants for Display stuff
 leftmargin: CARDINAL = 10;
 blanklines: CARDINAL = 6; -- H of blank lines at the top
 maxwordsperline: CARDINAL = 38;
 maxbitsperline: CARDINAL = maxwordsperline*16;
 minwidth: CARDINAL = 32;
 minheight: CARDINAL = 32;
-- some TYPE's and null POINTERS
  restype: TYPE = {high, low};
  backgtype: TYPE = {white, black};
  xCoord: TYPE = [0 .. 606];
  yCoord: TYPE = [0 .. 808];
-- Display Hardware Stuff
  DCBchainHead: DCBptr = LOOPHOLE[420B];
  DCBnil: DCBptr = LOOPHOLE[O];
  DCBptr: TYPE = POINTER TO DCB;
  DCB: TYPE = MACHINE DEPENDENT RECORD
    [
    next: DCBptr,
    resolution: restype.
    background: backgtype,
    indenting: [O .. 77B],         in units of 16 bits
    width: [0 .. 377B],    likewise; must be even
    bitmap: BMptr.              -- must be even
    height: CARDINAL       in double scan lines
    ];

   Font Stuff
  FHptr: TYPE = POINTER TO FontHeader;
  Fptr: TYPE = POINTER TO FONT;
  FCDptr: TYPE = POINTER TO FCD;
  FAptr: TYPE = POINTER TO fontarray;
  fontarray: TYPE = ARRAY [0 .. 255] OF FCDptr;
  FONT: TYPE = MACHINE DEPENDENT     RECORD
    [
    FHeader: Fon tlleader,
    FCDptrs: fontarray.          -- array of self-relative pointers to
       -- FCD's. Indexed by char value.
       -- font pointer points hear!
    Ex tFCDptrs: fontarray           array of self-relative pointers to
          rCD's for extentions. As large an
       -- array as needed.
    ];

  rontl/eader: TYP[ = MACI/INE DEPENDENT RECORD
    [
    MaxI/eight: CARDINAL,            -- height of tallest char in font (scan lines)
    VariabloWidth: [0 .. 1],         -- IF TRUr, proportionally spaced font
    blank:           [0 .. 1778],    -- not used
    MaxloJldtll: [0 .. 3778] -- width of widest char in ront (rastel' units).
    ];

  rCD: TYPf = MACIlTN[ OfPENOENT    RrCORD
    [
    widthORext: [0 .. 777778],         width or exlenlion index
    I/asNo[xtension: 800lEAN,       -- TRUf=) no ext. ;prevf ield=width
rectang1edeFs.mESA                  24-0CT-77 18:38:25                      Page 2


   height: [0 

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