FROM BOOK: "USING TURBO PASCAL"
AUTHOR : STEVE WOOD


The LST-IBM directory

This directory contains source code files, compiled programs and
supporting data files for a demo program illustrating a menu and
data input system for the IBM-PC and compatibles. As you review the
source code you will find that many routines are identical to
those in the book. The main differences are in the use of
formatted input screens created with a program development
utility called T-SCREEN. See the READ-ME file in the TSCREEN
directory for more information on T-SCREEN.

In addition to the use of T-SCREENs the demo program uses a
Video I/O driver written as a Turbo procedure. It writes directly
to video RAM and is over three times faster than the DOS video output
routine. The trade-off for this speed is system dependence.

The demo program consists of a .COM file compiled from the source
file DEMO.PAS and a .CHN file compiled from the source code file
DEMO-INP.PAS. The precompiled version on this disk is intended
for a monochrome system. If you are using a color system you may
recompile using the color version of STD-ATTR.INC. The code for
the color version is in the file called CLR-ATTR.INC. You should
be aware that the .TSM files created by T-SCREEN use only
monochrome attributes, so the video images that are called from
those files will appear in black and white even after recompiling
the demo for a color system. Note that a color version of
T-SCREEN is available which permits the creation of video images
using the full range of colors on the IBM-PC. Due to space
limitations it was not possible to include color T-SCREENS on
this diskette.

NOTE: If you recompile the DEMO.PAS file set the minimum Code
and Data size to 500 (Hex) paragraphs each.


Here is a list of the files on this disk and their contents.

STD-ATTR.INC { Video constants and attribute control routines. }
CLR-ATTR.INC { Color version of STD-ATTR.INC. }
STD-CTV.INC { Other standard constants, types and variables. }
PLS-UTIL.INC { Misc. global routines. }
PLS-INP .INC { Global input routines. }
PLS-DISP.INC { Global display routines. }
DEMO-CTV.INC { Constants, types and variables for DEMO program.}
DEMO.PAS { Source code for DEMO.PAS file. }
DEMO-INP.PAS { Source code for DEMO-INP.CHN file. }
DEMO-HLP.TSM { T-SCREEN Help screen for demo program. }
MENU-HLP.TSM { T-SCREEN Help screen for demo menu system. }
PLS-MENU.TSM { T-SCREEN menu screen for demo program. }
DEMO-INP.TSM { T-SCREEN input screen for demo program. }
PLS-PRMT.TSM { T-SCREEN command prompts for demo program. }
DEMO.MSG { Field input messages for demo input program. }
DEMO.MNU { Menu selections for demo program. }
DEMO.DAT { Data file for demo input program. }
DEMO-INP.CHN { Precompiled DEMO-INP.PAS as a chai