The First IBM PC’s Memory Organization
One of the most useful things we can learn about the inner workings of our Pes is how the memory…
IBM PC Memory Architecture
Memory Overview We already know, from earlier parts of this book, most of the underly ing ideas about our PC…
3 Laws of Modular Design for Assembler program
These laws are summarized below. They aren’t really laws, they’re suggestions. But we’ll u e them throughout thi book. Define…
Translating Programs
To make any program, no matter what programming language it was written in, come alive, it has to be translated…
History and Concepts of the DOS
The real history of our DOS begins with the early planning for the IBM Personal Computer and the operating system…
How the BIOS ROM works
Although the complete details of how the ROM-BIOS works are really only of concern to accomplished assembly language technicians, the…
The ideas behind the BIOS
The ROM-BIOS has a clumsy name that only hints at what it’s all about: ROM-BIOS is short for Read-Only Memory…
The 8086 PC Family
One of the keys to understanding the PC family is understanding the microprocessor that acts as the working "brains" of…
Some family history of IBM PC
The public history of the PC began in August 1981, when IBM first announced "The IBM Personal Computer," what we…