z80 microprocessor

fast. The top-level Configuration computer purchased in the past two years is still a trivial matter, even more cool, it seems that we need to learn new knowledge every day. When we first graduated, we only learned Pascal from books and learned to use corrosion methods to make circuit boards. At work, we started to learn turboc and tanger2.0, I just learned it. I am not happy yet. I will start learning Borland soon.C ++ and protel3.0 are difficult to learn, but they find that they need to learn

iff0 in Z80 are controlled by ei and di commands. 2. Multiple interruptions: interrupt service programs can also be interrupted-interrupt nesting. Implementation Method 1: set the priority for both CPU and interrupt requests.Method 2: Use the interrupt shielding register and set the flexible priority with the software. 8.6.3 Interrupt priority Priority: the order in which the CPU responds and processes the interrupt request, which depends on the imp

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68000. The Amiga. NCR 8500 Big NCR Century Big Sun Sparc and UltraSparc Big Sun ' s Solaris. Normally used as Big-endian, but also has support for operating for Little-endian mode, including being to switch end Ianness under program control for particular loads and stores. Univac 1100 Word-addressable 36-bit words. Univac 90/30 Big IBM 370 Clone Zilog Z80 Little Used in CPM machines. If you are know the endianness of the other cpus

system runs through two ancient veins: a VMS operating system designed to run on a VAX microcomputer, and an cp/m operating system running on an earlier Intel microcomputer (such as 8080, Z80). VMS have a distributed hierarchical file system called Files-11. 。 In Files-11, the full path to a file includes a node name, an associated user account, device name, directory tree, file name and file type, and version number. VMS have a powerful logical na

library, Fsl_sdspi.h/fsl_ The SDSPI.C is the standard driver for the SPI Mode access SD card and can be applied directly to the LPC5411X development environment. SD Card Driver is the main implementation of three interfaces, respectively, the SD card recognition initialization, SD card block read, SD card block write, the implementation can refer to FSL_SDSPI.H/FSL_SDSPI.C driver files. 3. Fatfs Data are often stored in the form of files in the storage device, for SD card, the general use of th

Article Title: differences between LINUX and other operating systems. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. It is very important to know how Linux differs from other operating systems. Here we mainly discuss the operating systems on PCs, such as MSDOS, Windows, and Unix. First, you must note that Linux and these operating systems can coexist on the

I often see some people discuss whether the C language assignment statement is an atomic operation? Is the C ++ statement an atomic operation? Webopedia:Atomic implies indivisibility and irreducibility, so an atomic operation must be specified med entirely or not completed MED at all.An operation during which a processor can simultaneously read a location and write it in the same bus operation. this prevents any other processor or I/O device from writing or reading memory until the operation is

forgive me. Overview What is a router? Figure 1 The Internet is connected by routers, which are the core devices of the Internet or an IP network. The increasing bandwidth access has led to the increasing demand for routers. What kind of technical product is vro? When talking about the development of vrouters, we can't help but talk about the development of "embedded" devices. That's right. Generally speaking, vrouters are embedded products. So what is an embedded devic

A Task-based programming Shared memory multi-core OS and distributed memory OS Shared Memory multicore os-A microprocessor consists of multiple cores, and each core shares a piece of private memory;Distributed memory os--consists of multiple microprocessors, each microprocessor can have its own private memory, the microprocessor can be located on di

One, 8086CPU 1, microprocessor(1) Micro-control machine: Also known as single-chip microcomputer (2) DSP chip: Digital signal processing chip (3) Embedded microprocessor (4) Universal microprocessor: PC Station, workstation, server using the processor 2. Internal structure:(1) Bus interface Unit (BIU): A. Responsible for data transmission and instruction Reading

building lighting system real-time monitoring. The Coordinator is responsible for establishing, managing and maintaining the network, receiving the information of each routing node, and then sending the data to the computer through the serial port, displaying the real-time situation in the computer terminal and transmitting the control command. The routing node has the functions of terminal control, information acquisition and automatic alarm. 2.2 Hardware Design The classroom node is mainly co

The main difference between random access memory and magnetic media memory is that random access memory is volatile and softThe data on the disk or on the hard drive remains, unless you intentionally delete or write the overlay. In addition, there is a significant difference only inUnderstanding how microprocessors work can be understood: when a microprocessor outputs an address signal, it is usually addressed to a randomMemory, not magnetic media.Rem

field of word processing and graphic image processing. 4th Generation: LSI Machine (1970-present) In terms of hardware, logic components are used in large scale and VLSI (LSI). In the aspect of software, database management system, network management system and object-oriented language are presented. It is characterized by the birth of the world's first microprocessor in Silicon Valley in the 1971, creating a new era of microcomputers.

relationship between them. instruction Cycle: is the CPU's key indicator, which refers to the time to take out and execute an instruction. In general, the machine cycle is the unit, single instruction execution cycle, double instruction execution cycle, etc. Most of the current processor instructions (ARM, DSP) use a single instruction execution cycle. Machine Cycle: complete a basic operation of the time unit, such as the reference period, take the number of cycles. Clock cycle: The inverse of

In 1.1946, the world's first computer ENIAC was born at the University of Pennsylvania. 2. The first microcomputer appeared at Intel in. Its microprocessor was million times/second. 3. Memory 4 GB (1g = 1024 M, 1 m = 1024 K, 1 k = 1024b ), Clock speed: 4 GHz (1g = 1000 m, 1 m = 1000 K, 1 k = 1000Hz) 4. Font length: the number of digits that the cup can process binary information at a time. 5. Based on the number of CPUs, it can be divided into giant c

The arm + LINUX route focuses on the embedded Linux operating system and its application software development goals: (1) master the structure and principle of mainstream embedded microprocessor (initially set as ARM9.) (2) Master An Embedded Operating System (initially set as uClinux or Linux, the version is to be determined) (3) be familiar with the embedded software development process and have at least one embedded software project. The benefits o

Comparison of main ZigBee chip vendor's ZigBee solution competitiveness Comparison of main ZigBee chip vendor's ZigBee solution competitivenessAt present, there are major ZigBee chip vendors (2.4 GHz), including Ti/chipcon, Ember (ST), jennic (), Freescale, and microchip.Currently, ZigBee technology provides three methods:1) ZigBee RF + MCU, such as Ti CC2420 + MSP430, freesclae mc13xx + GT60, microchip mj2440 + pic mcu.2) Single-Chip Integrated SOC, such as Ti cc2430/cc2431 (8051 kernel), Frees

The learning plan for the embedded Linux operating system is clear, and the most important thing is the recommended books. If you plan to enter this line of development, you must learn everything !!!The arm + LINUX route focuses on the embedded Linux operating system and its application software development goals:(1) master the structure and principle of mainstream embedded microprocessor (initially set as ARM9)(2) You must master an embedded operatin

Embedded Linux OS learning plan The arm + LINUX route focuses on the embedded Linux operating system and its application software development goals: (1) master the structure and principles of mainstream embedded microprocessor (initially set as ARM9)(2) You must master an embedded operating system (the initial version is uClinux or Linux, and the version is to be determined)(3) be familiar with the embedded software development process and build at l