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32/64-Bit 80X86 Assembly Language Architecture James Leiterman
Publisher: Jones & Bartlett Publishers

By "necessary" One-liner answer (and hence a comment): since you can easily run any application from any folder without knowing its architecture, then there's clearly no compulsory reason for this separation. The system for 32/64 application distinction furthers this goal. Should a programmer that does not program in Assembly and does not program compilers learn SSE? Nov 20, 2008 - Thoroughly revised and updated throughout, the Second Edition of Introduction to 80x86 Assembly Language and Computer Architecture provides students with a clear and concise introduction to the inner workings of the computer, and their pages; Product Dimensions: 9.4x7.6x1 inches; Shipping Weight: 1.6 pounds; Last Update: 2008-11-20T13:15:05-05:00; Like it: Buy From Amazon.comFREE Super Saver Shipping (Restrictions*) Big Surprise! Second: 64-bits processors support 32-bits processors. Mar 29, 2011 - Is it CISC architecture? For example the size of a pointer is larger on a 64 bit platform this tends to make the size of a program larger. 32-bits app uses smaller amount . If 64-bits processors replace 32-bits processors, should programmers compile app that uses less than 2 GB of RAM for 32-bits? Aug 20, 2013 - Most likely it costs a bit. Jun 27, 2012 - I know that on a 64-bit version of Windows the "Program Files" folder is for 64-bit programs and the "Program Files (x86)" folder is for 32-bit programs, but why is this even necessary?