home *** CD-ROM | disk | FTP | other *** search
-
- INSTALLATION ADVICE
-
- The Elan Programming Environment uses an overlay called "prelbin.bin" which
- should be present either:
- - in the current directory,
- - in the directory "\bin", or
- - in the directory "a:\bin".
-
- It is advised not to use your master-floppy for program development, instead
- keep the "\bin" directory reachable for DOS by means of a PATH assignment and
- keep your Elan programs on another drive (e.g. b:).
-
- When you have a fixed disk installed, simply copy the "\bin" directory from
- this disk to the fixed disk ( use same directory name ) and include it in your
- PATH. Because the Elan Programming Environment uses the ANSI.SYS device be
- sure to have the next line included in the system configuration file
- "CONFIG.SYS"
-
- DEVICE=ANSI.SYS
-
- and to have the file "ANSI.SYS" copied to the root directory of the fixed disk.
-
-
- GRAPHIC PROCEDURES
-
- The Elan Programming Environment is available with Hercules, IBM Color and
- Enhanced Color graphics controllers.
-
- Here is the list of applicable procedures:
-
- Standard library: Turtle packet:
-
- INT PROC graphics x limit enter turtle graphics
- INT PROC graphics y limit leave turtle graphics
- REAL PROC aspect PROC turtle window
- (INT CONST xmin, xmax, ywin, ymax,
- PROC enter graphics mode REAL CONST x rng, y rng)
- PROC enter text mode
- BOOL PROC in text mode
- PROC move (REAL CONST x, y)
- PROC color (INT CONST c) PROC move (REAL CONST lgth)
- PROC clear graphics screen PROC draw (REAL CONST x, y)
- PROC draw (REAL CONST lgth)
- INT PROC current x position PROC turn (REAL CONST radian)
- INT PROC current y position PROC turn (INT CONST angle)
- PROC move (INT CONST x, y) PROC turn left
- PROC draw (INT CONST x, y) PROC turn right
- PROC plot pixel
- After 'entering' turtle graphics
- PROC plot text (TEXT CONST t) the 'window' is at the center of
- INT PROC character width the screen, the range is in both
- INT PROC line height direction from 0.0 to 100.0,
- starting from the bottom left
- The consol input-output routines corner in contrast to integer
- are applicable also in graphics graphics mode where the origin
- mode (e.g. put, get, line, page, is the upper left corner with
- inchar, get cursor, cursor, the coordinates (1, 1).
- x size, y size, ...).
-
-
- PRINTING THE SCREEN
-
- The Shift-PrtSc key of your PC will invoke printing of the screen either in
- text or graphics mode.
-