S2E12 Atari Mortgage & Loan Analysis – Supplement

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

Podcast: Download

Box and Supplement Scans

Scan of the front of the box:

Atari MLA Cover


Investment Series Brochure Ad:

Atari MLA Brochure


Catalog Ad:

Atari MLA Ad


Control Data Corporation Logo:

Atari MLA CDC Logo


Mortgage & Loan Analysis in Action

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

Atari MLA Boot Load


The first of two splash screens:

Atari MLA Init 1


The second splash screen:

Atari MLA Init 2


Program overview:

Atari MLA Init 3




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

Atari MLA 1 1



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

Atari MLA Info 1

Atari MLA Info 2

Atari MLA Init 3

Atari MLA Init 4

Atari MLA Init 5


Running a Problem

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

Atari MLA 1 Error 1

Atari MLA 1 2


Oops, numeric amounts only.  Data validation at work:

Atari MLA 1 Error 2


Enter up to 10 interest rates:

Atari MLA 1 3


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

Atari MLA 1 4


Viewing the Output

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

Atari MLA 1 5 a


B) Continuing A, loan value 2 results:

Atari MLA 1 5 b


Continuing A, loan value 3 results:

Atari MLA 1 5 d


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

Atari MLA 1 5 d


Problem End Menu

Atari MLA ReRun


Modern Calculation

Using web based modern calculation to validate the same results:

Atari MLA Modern



Init screen print:


Information screens printed (all 5):






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


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


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


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



Show Links:


Intro music is an excerpt from a chip tune by Wizwars named 8 Bit Raceway.  It is used under Creative Common license Attribution-NonCommercial-ShareAlike 3.0 United States.

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