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void cCmdDrawString(UBYTE *pString, ULONG X, ULONG Y, UBYTE InvertMode, UBYTE LogicalMode, UBYTE FillMode)    //JJR
{
  UBYTE   *pSource;
  UBYTE   *pDestination1;
  UBYTE   *pDestination2;
  UBYTE   a;
  FONT    *pFont;
  ULONG   FontWidth;
  ULONG   Items;
  ULONG   Item;
  SLONG   Line;
  UBYTE   offset;
  UWORD   a2;
  UWORD   mask;
  UWORD   font;

  //Get current font information
  pFont = pMapDisplay->pFont;
  Items = pFont->ItemsX * pFont->ItemsY;

  //Invert Y coordinate to match display buffer
  Y = TRANSLATE_Y(Y);
  Line = (Y & 0xF8) / 8; // truncates down to nearest multiple of 8
  offset = (Y-7) % 8; // how many bits is the content shifted?
  if (offset)
    Line--;
    
  mask = ~(0x00ff << offset);

  //If text line is out of bounds, do nothing.
  if (Line >= TEXTLINES)
    return;

  //Calculate pointer to first byte of drawing destination
  if (Line >= TEXTLINE_1)
    pDestination1 = &(DISP_BUFFER_P[Line * DISPLAY_WIDTH + X]);
  else
    pDestination1 = NULL;
  if (offset && (Line < TEXTLINE_8))
    pDestination2 = &(DISP_BUFFER_P[(Line+1) * DISPLAY_WIDTH + X]);
  else
    pDestination2 = NULL;

  // bail out early if neither destination is valid
  if (pDestination1 == NULL && pDestination2 == NULL)
    return;

  while (*pString)
  {
    FontWidth = pFont->ItemPixelsX;
    //Calculate X coordinate of the right edge of this character.
    //If it will extend past the right edge, clip the string.
    X += FontWidth;
    if (X > DISPLAY_WIDTH) // JCH: was >= This clipped text that ended at pixel 99
      break;

    //If Item is defined by the font, display it.  Else, ignore it.
    Item = *pString - ' ';
    if (Item < Items)
    {
      pSource      = (UBYTE*)&(pFont->Data[Item * FontWidth]);
      while (FontWidth--)
      {
//JJR

          //Fetch a byte from the source bitmap:
          //If fill mode is on, pretend the source bitmap is solid:
          if (FillMode==DRAW_SHAPE_FILLED)
            a = 0xff;
          else
            a = *pSource;
            
          //Implement bitmap invert mode:
          if (InvertMode==DRAW_BITMAP_INVERT) a = ~a;

          // grab data from 1 or 2 lines 
          a2 = (pDestination2 ? ((UWORD)(*pDestination2) << 8) : 0x0000) |
               (pDestination1 ? (UWORD)(*pDestination1) : 0x0000);

          font = (UWORD) a << offset;
          
          switch (LogicalMode)
          {
              case DRAW_LOGICAL_OR:
                  a2 |= font;
                  break;
              case DRAW_LOGICAL_AND:
                  a2 &= font | mask;
                  break;
              case DRAW_LOGICAL_XOR:
                  a2 ^= font;
                  break;
              case DRAW_LOGICAL_COPY:
              default:
                  a2 = (a2 & mask) | font;
                  break;
          }
//JJR
        if (pDestination1) {
          *pDestination1 = (UBYTE)(a2 & 0xFF);
          pDestination1++;
        }
        if (pDestination2) {
          *pDestination2 = ((UBYTE)(a2>>8) & 0xFF);
          pDestination2++;
        }
        pSource++;
      }
    }
    pString++;
  }
}