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The PC-SIG Library 9
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DISK0833
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README
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1987-03-22
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March 22, 1987
GRAPHTIME-II Function data generation.
The Function generator disk operates independently of the other
GRAPHTIME-II disks (STARTUP and RUNTIME). When the function(s) have
been entered and the data created, this data file is then loaded
with the normal FL command in the GRAPH program.
INSTALLATION.
a. Floppy disk:
IBM PC: Copy the BASICA interpreter from your system disk onto the
Function Generator disk: e.g. A:> COPY BASICA.* B: <RTN>
or
IBM Compatibles: Copy the GWBASIC interpreter onto the Function
Generator disk: e.g. A:> COPY GWBASIC.* B: <RTN>
b. Hard disk:
1. Copy all files from the Function Generator disk into the GT
subdirectory. e.g. C:\GT> COPY A:*.* <RTN>
2. Copy BASICA.* or GWBASIC.* into the GT subdirectory.
e.g. C:\GT> COPY A:GWBASIC.* <RTN>
OPERATION.
From either drive A: (Floppy system) or subdirectory: GT (Hard
disk), enter:
GTF <RTN> (GWBASIC installed)
or
GTFB <RTN> (BASICA installed)
This will run the Function Generator program. One or two functions
may be entered.
Single function: e.g. A(X)=SIN(X)
Where A is the function name. X is the argument and will be
specified as a range of values.
X-axis will be the X range specified (e.g. -10 to 10).
Y-axis will be the function of X. (e.g. SIN(X) )
Double function: e.g. Funct1: A(X)=SIN(X) and Funct2: B(X)=COS(X)
X-axis will be Funct1(X).
Y-axis will be Funct2(X).
2.
When the functions have been entered the program will request:
Function Title: (To accept the title shown, press
Y-axis Title: <RTN> or type in your new title.
X-axis Title: These will appear on the graph.)
A new program will be generated and run to request further
information:
(Note: On a PC-XT this process will take approximately one minute.)
Output File name:___________/ (The name may include drive. eg B:
Do not add an extension as .GTD
is added.)
Number of points:____/ (Maximum for GRAPHTIME is 730)
Minimum argument:________/ (May be + or -)
Maximum argument:________/ (Must be higher than minimum.)
The increment will calculated and displayed.
If the entry is OK press Y or <RTN>.
The X and Y data pairs will be calculated and written to the data
file.
You may then press <Esc> to return to system (DOS) level, or press
SPACE to create another file of the same function(s) using a
different numbers of points and argument range.
When the file(s) have been created, startup GRAPHTIME-II in the
usual way: GT <RTN> then select G for Graph.
Use FL name<RTN> to load the data into memory 0.
The data is in Random format and may be edited, printed or graphed.