Abstract
One of the simplest operations often needed in a microprocessor program is to add together two bytes held in the writable store and put the sum also into the store. This can only be done using the accumulator, so that the procedure becomes
Load Accumulator from NUM1
Add to Accumulator NUM2
Store Accumulator in SUM
Here NUM1 and NUM2 are the addresses of the two bytes to be added and SUM the address allocated for the sum.
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© 1987 J.C. Cluley
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Cluley, J.C. (1987). Basic Algorithms. In: An Introduction to Low Level Programming for Microprocessors. Macmillan Computer Science Series. Palgrave, London. https://doi.org/10.1007/978-1-349-09355-7_5
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DOI: https://doi.org/10.1007/978-1-349-09355-7_5
Publisher Name: Palgrave, London
Print ISBN: 978-0-333-43692-9
Online ISBN: 978-1-349-09355-7
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