https://inverseatascii.info/wp-content/uploads/2016/03/inverseatascii-s2e12-atari_mortgageloananalysis.mp3

This episode features Mortgage & Loan Analysis, originally released in 1980 by Atari.  It was developed by Control Data Corporation.

Podcast: Download

Scan of the front of the box:

Investment Series Brochure Ad:

Catalog Ad:

Control Data Corporation Logo:

After the initial CLOAD and subsequent RUN, the real loader’s splash screen while it loads from cassette:

The first of two splash screens:

The second splash screen:

Program overview:

The only menu.  There are two choices.  Information or run a problem:

Information

There are 5 screens of information.  Each can be printed as well:

Running a Problem

Enter up to 10 amounts.  Note the error – you must enter at least one value:

Oops, numeric amounts only.  Data validation at work:

Enter up to 10 interest rates:

Enter up to 10 terms (loan lengths) in years using decimals to represent partial years:

Viewing the Output

A) 3 loan values, 3 terms, and 3 interest rates.  Loan value 1 results:

B) Continuing A, loan value 2 results:

Continuing A, loan value 3 results:

D) Simple comparison of 1 value, same term, and variance only in the interest rate:

Problem End Menu

Modern Calculation

Using web based modern calculation to validate the same results:

Init screen print:

https://inverseatascii.info/wp-content/uploads/2016/03/s2e12-prt-0-init-03.pdf

Information screens printed (all 5):

https://inverseatascii.info/wp-content/uploads/2016/03/s2e12-prt-2-i-01.pdf

https://inverseatascii.info/wp-content/uploads/2016/03/s2e12-prt-2-i-02.pdf

https://inverseatascii.info/wp-content/uploads/2016/03/s2e12-prt-2-i-03.pdf

https://inverseatascii.info/wp-content/uploads/2016/03/s2e12-prt-2-i-04.pdf

https://inverseatascii.info/wp-content/uploads/2016/03/s2e12-prt-2-i-05.pdf

3 loan values, 3 terms, and 3 interest rates.  Load value 1 results:

https://inverseatascii.info/wp-content/uploads/2016/03/s2e12-prt-1-05-a.pdf

3 loan values, 3 terms, and 3 interest rates.  Load value 2 results:

https://inverseatascii.info/wp-content/uploads/2016/03/s2e12-prt-1-05-b.pdf

3 loan values, 3 terms, and 3 interest rates.  Load value 3 results:

https://inverseatascii.info/wp-content/uploads/2016/03/s2e12-prt-1-05-c.pdf

Output from the simple loan with 1 value, same term, and only variance in interest rate (D above):

https://inverseatascii.info/wp-content/uploads/2016/03/s2e12-prt-1-05-d-simple.pdf

Podcast: Download

This episode features Enhancements to Graph It, originally released in 1982 by APX.  It was developed by Howard D. Siebenrock.  The main difference here is the ability to save and load the generated graphs.

https://inverseatascii.info/wp-content/uploads/2016/03/inverseatascii-s2e11-apx_enhancementstographit.mp3

This episode features Enhancements to Graph It, originally released in 1982 by APX.  It was developed by Howard D. Siebenrock.  The main difference here is the ability to save and load the generated graphs.

Podcast: Download

Scan of the manual cover:

Ad from APX catalog Fall 1982:

Before using Enhancements to Graph It, you must first merge the supplied program changes with your copy of the original Graph It BASIC programs.  Once merged and saved to a new diskette that is created as part of the process, you boot the new diskette.  Unlike Graph-It, Enhancements to Graph It equips you with a menu for easy selection.

Loading

Menu

Menu:

Bar Charts

Bar Chart Menu:

Viewing the result (Inverse ATASCII season 2 episode sizes):

Exit menu with Save option:

Entering the save filename:

Chart being saved:

Using the Retrieve option to load a chart:

Entering an * to select deletion instead of load:

Viewing the retrieved chart:

Pie Graphs

Menu:

After entering the information, now viewing the result (Inverse ATASCII season 2 episodes by length category):

Exit menu, with Save option:

Graph being saved:

Loading a Pie Graph using the Retrieve menu option:

Menu:

New Degrees or Radians menu:

Function is displayed while plotting occurs:

Viewing result.  Both function and degrees or radians is displayed for reference:

Exit menu, with Save option:

Entering a Save filename:

Plot being saved:

Loading a plot using the Retrieve menu option:

Menu:

New menu for choosing Degrees or Radians:

Functions are displayed while plotting occurs:

Viewing result now has functions displayed as well as radians or degrees for reference:

Exit menu, with Save option:

Entering filename to save:

Selecting a plot to load using the Retrieve menu option:

Menu:

New menu to choose Radians or Degrees:

Viewing result.  Function and degrees or radians is displayed for reference:

Exit menu, with Save option:

Enter filename to save plot as:

Plot being saved:

Selecting a plot to load using the Retrieve menu option:

Enhancements Graph It uses Atari DOS 2.0s.  The contents of the Enhancements to Graph It disk can be seen in this screenshot:

After the merge and disk conversion process is complete, the new boot disk contents:

Saved plot file sizes:

Standard APX disk identification file (DISKNAME.DAT) contents:

There is no provision for printing.

You can find the manual in multiple locations on the internet.  Check the AtariMania site as one example.

Podcast: Download

This episode features Graph It, originally released in 1980 by Atari.

https://inverseatascii.info/wp-content/uploads/2016/03/inverseatascii-s2e10-atari_graphit.mp3

This episode features Graph It, originally released in 1980 by Atari.

Podcast: Download

Scan of the front of the box:

Scan of the back of the box:

Manual cover:

New Product announcement in Atari Connection March 1981 issue:

Ad from Analog May 1981 for software designed to solve the lack of printing and loading/saving of charts:

Boots to BASIC.  Use CLOAD to load the desired plotting program from cassette or run it from disk if it has been converted.  There is no menu for choosing.

Menu

Bar Charts

Give the chart a title:

Define the number of factors:

Enter the column labels:

Enter the values for each factor:

See the result.  Chart using 1 factor (episode size in MB):

Exiting the chart:

See the result.  Chart using 2 factors (episode len in minutes and seconds):

Pie Graphs

Entering the graph title:

Setting the Pie slice labels:

Setting the Pie slice values:

Setting the graph sub title:

See the result.  Graph for categorized episode lengths:

Exiting the graph:

Plot splash banner:

Define the number of functions for the plot:

Enter the function(s) for the plot:

Choose the plot speed (plot resolution – faster is lower resolution):

Enter the limits for the function variables:

Specify auto scaling (in case it may plot beyond screen range):

Seeing the result:

Exiting menu:

Returning to graph (Do Not Exit):

Using the joystick to find values along the plot:

The polar plot splash screen:

Entering the X function:

Entering the Y function:

Entering the Theta values and increment:

Choosing to auto scale or not:

See the result.  Simple circle plot:

Using the joystick to find values along the plot lines:

Exit menu:

Polar flower plot using Graph It (plot time = 2 minutes).  Function definition, parameter values, and result:

X=COS(1.5*T) * COS(T) and Y=COS(1.5*T)*SIN(T), with theta values of 0 to 13 in .1 increments.

Same polar flower plotted using a Casio fx-9750G Plus (plot time = 20 seconds):

Same polar flower plotted using web based FooPlot (plot time = instantaneous):

The three dimensional plot splash screen:

Defining the function:

Choosing the plot speed (plot resolution: fast is low resolution):

Defining the X values:

Defining the Y values:

Choosing to auto scale or not:

Defining the Z value limits:

Options to remove hidden plot lines and turning the display off during plot (roughly 30% increase in speed):

Plotting started:

Result:

Exit menu:

Same plot using FAST option (lower resolution, fewer plotted points):

Replotting and not removing hidden lines:

Result:

Normally there are no files since the program ships on cassette.  Graph It, when converted to disk, uses Atari DOS 2.0.  The contents of the disk can be seen in this screenshot:

The files are:

There is no provision for printing.

You can find the manual in multiple locations on the internet.  Check the AtariMania site as one example.

Podcast: Download

This episode features Statistics I, originally released in 1980 by Atari.

https://inverseatascii.info/wp-content/uploads/2016/03/inverseatascii-s2e09-atari_statisticsi.mp3

This episode features Statistics I, originally released in 1980 by Atari.

Podcast: Download

Scan of the manual cover:

Scan of the front of the box (bad scan, not mine):

Scan of the back of the box (bad scan, not mine):

Boot into BASIC.  Load from cassette and run or load from disk if you have converted it to disk:

Main Menu:

Option A – Input New Database

If you have data already entered, you are prompted to erase it:

Enter the data, one data point at a time:

Invalid input message:

Select the data point to edit:

Once an edit starts, the screen changes color:

Option C – Save Database

Give it a name (disk):

Option D – Load Database

Specify the name (disk):

Option E – Process Data

Processing the data involves 6 phases:

The results are displayed:

Option F – Print Data Points

Nothing spectacular to see here:

Option G – Return to BASIC

Statistics I uses Atari DOS 2.0.  The contents of the disk can be seen in this screenshot:

The files are:

General statistics (Inverse ATASCII Season 1 Episode Size):

https://inverseatascii.info/wp-content/uploads/2016/02/s2e09-prt-5-process-7.pdf

List data points (Inverse ATASCII Season 1 Episode Size):

https://inverseatascii.info/wp-content/uploads/2016/02/s2e09-prt-6-print-1.pdf

General statistics (Inverse ATASCII Season 1 Episode Length):

https://inverseatascii.info/wp-content/uploads/2016/02/s2e09-prt-6-print-2.pdf

Available from several sources on-line.

Podcast: Download

This episode features SynCalc, originally released in 1983 by Synapse Software.  It was also released in 1985 by Br0derbund under the Synapse branding.  It was programmed by Mike Silva.

https://inverseatascii.info/wp-content/uploads/2016/02/inverseatascii-s2e08-synapse_syncalc.mp3

This episode features SynCalc, originally released in 1983 by Synapse Software.  It was also released in 1985 by Br0derbund under the Synapse branding.  It was programmed by Mike Silva.

Podcast: Download

Scan of the front of the box (1983):

Scan of the back of the box (1983):

Synapse Catalog page featuring SynCalc:

Synapse Logo:

Br0derbund Logo:

1983 Boot splash:

1985 Boot splash:

Booting with insufficient memory:

Interface (1983) on an XE with 192K:

Interface (1985) on an XE with 192K (note the available memory is 84K):

Press OPTION to bring up the menu. Navigate with the cursor keys and use RETURN to select:

Expert mode uses keystrokes instead of the OPTION menu.  Not the shortcut keystroke command in the status bar at the top (/LSWD2L BUDGET):

Six command functions on the menu:

Load

First choose Worksheet or Data (DIF):

Load Worksheet:

Load Data:

Save

Save sub menu.  First choose Worksheet, Data (DIF), or Text:

Save Worksheet:

Save Data (DIF):

Save Text:

Format

Delete

Delete sub menu.  First choose what to delete – Worksheet, Data (DIF) or Text:

Delete Worksheet:

Delete Data (DIF):

Delete Text:

Rename

VC -> SC

Converts VisiCalc files to SynCalc files:

End result:

Use this to force input to be text:

Use this to force input to be of numeric type:

The command menu has a lot of functions.  Manu commands open sub menus as well:

Format

Format menu:

Format Justify:

Format Margin:

Format Protect:

Format Dollars:

Format Commas:

Format Percent:

Format Precision:

Format Number:

Format Sign:

Global

Global Format:

These are the same as the normal Format commands, but apply globally.

Global Unformat:

These are the same as the normal Unformat commands, but apply globally.

Global Width:

Global Erase:

Global Recalc:

Global Txt Mode:

Width

Unformat

Copy

Move

Insert

Delete

Erase

Goto

Print

Sort

Window

Window set horizontally:

Window set vertically:

Titles

With titles locked, you can scroll back past the lock to edit the locked row or column:

Headings

Headings Off:

Headings On:

UseLBLS (Labels)

Specify the column and row, then you can reference cells in formulas using the text in the columns and rows specified – like JAN_SALES:

Errant forward reference not caught:

Forward reference resolved after recalculation:

Out of Range error (top line):

Illegal filename:

Device error:

File not found error:

Cell protection error:

The program disk itself has a hidden VTOC and is copy protected.

SynCalc saves produced three types of files.  SC for worksheets, DIF for data interchange files (or values), TXT for reporting:

Note the similarly named VC files (from VisiCalc).  When converted they are sometimes larger, likely due to failed aspects of conversion where items get converted to plain text.

You can find the manual in a number of places online.  Check the links section below.

Podcast: Download

This episode features HeartWare, originally released in 1986 by Hi Tech Expressions.  It was developed by Comware and authored by Joe Suarez.