The Pep/9 emulated hardware has 64K of RAM, as we know. But how is that memory put to use? Everything we've written thus far has only been in "low" memory, never exceeding 0x0030 or so. So, what is the purpose of all that extra memory? How does Pep/9 know how to use each memory area? Another thing to consider... We've just used "global" variables so far. How will things change once we start utilising "local" variables? What is the distinction in how they are handled?

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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The Pep/9 emulated hardware has 64K of RAM, as we know. But how is that memory put to use? Everything we've written thus far has only been in "low" memory, never exceeding 0x0030 or so. So, what is the purpose of all that extra memory? How does Pep/9 know how to use each memory area? Another thing to consider... We've just used "global" variables so far. How will things change once we start utilising "local" variables? What is the distinction in how they are handled?

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