[Coco] What is the next "step" in my education?

Melanie and John Mark Mobley johnmarkmelanie at gmail.com
Sat Jun 25 21:51:41 EDT 2016

John Lochey,

Glenside Color Computer Club Newsletter Volume 35, Number 2
Link: http://www.glensideccc.com/data/library/newsletters/gccc35_2nl.pdf

Open the newsletter.
Read the "Overfow Logic" article on page 12.
Read the "Assembly 32-bit Compare Subroutine" on page 15.

Note the add, subtract, and compare command work on both signed and unsigned
numbers.  You do not need to tell the microprocessor in advance what you are
trying to do.  The microprocessor will set some flags and you need only pay
attention to the ones that are relevant to either unsigned or signed
numbers.  The two articles above try to explain this.

Idea start out simple.  Try to add two 8-bit numbers.  Then try to add two
16-bit numbers.  Then try to add two 32-bit numbers.  Then try to add two
numbers with x numbers of bytes.  Where x=1, 2, 3, 4, 5, 6, 7, or 8 bytes.

John Mark Mobley

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