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Inside this Book – The microprocessor is the brain of the PC. It understands a limited number of machine language instructions and processes or executes programs in this machine language. These instructions are very simple and can’t be compared to commands in high level languages such as BASIC, Pascal or C. Commands in these languages must be translated into a large number of machine language instructions that the PC’s microprocessor can then execute. For example, displaying text with the BASIC PRINT statement requires the equivalent of several hundred machine language instructions. Machine language instructions differ for each microprocessor used in different computers. When you hear someone talk about Z-80, 6502 or 8088 machine language, these terms refer to the microprocessor being programmed.
Inside this book –PC system programming PDF Book by Michael Tischer – The PC has its own family of microprocessor chips, all designed by the Intel Corporation. The figure on the next page describes the Intel 80xx family tree. Your PC may contain an 8086, an 8088 (used in the PC/XT), an 80186, an 80286 (used in the AT) or even an 80386 microprocessor. The first generation of this group (the 8086) was developed in 1978. The successors of the 8086 were different from the original chip. The 8088 is actually a step backward since it has the same internal structure and instructions of the 8086, but is slower than the 8086. The reason is that the 8086 transfers 16 bits (2 bytes) between memory and the microprocessor at one time. The 8088 is slower since it transfers only 8 bits (1 byte) at one time.
PC system programming by Michael Tischer PDF : eBook Information
- Full Book Name – PC system programming
- Author of this Book – Michael Tischer
- Language – English
- Book Genre – Function, Interrupt, Program, Address, Dos, Segment, Character, Bios, System Programming
- Download Format – PDF
- Size – 34.9 MB
- eBook Pages –939
- Price – Free