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Intel 8086 and 8088

The Intel 8086/8088 family of microprocessors is a 16 bit architecture on a 16 bit (8086) or an 8 bit (8088) bus. The 8088 was the processor in the original IBM PC, and has evolved into the most popular processor used today in PC's and servers.

1,056 Questions

What is the pin diagram of ic U6430B?

1.ground 2.supply voltage 3.relay driver 4.c1 oscillator 5.r1 oscillator 6.supply voltsge 7.lamp failure detection 8.start input

What is bus cycle in a microprocessor?

Bus cycle is a single transaction between the main memory and the CPU.

Diagram of a computer bit?

If you were able to look inside a RAM stick, it would look like at spreadsheet. 8 columns across (8 bits) and billions of rows long depending on the side of the RAM. So 1 bit is 1 character, eight bits is a word or 1 byte.

What is the capacity of DRAM with twelve address lines?

Since DRAM uses address multiplexing(essentially each line accesses both columns and rows in memory) you need to take 2 to the 24th power to find your total capacity(basically doubling the number of address lines). In this case it would be 16,777,216.

What is the difference between microprocessors and CPUs?

Difference Between Microprocessors and CPUsAll CPUs are microprocessors. All microprocessors are not CPUs. CPU stands for "Central Processing Unit" but it is not the only microprocessor in a modern computer system. Others include the GPU (graphics), Northbridge (memory and bus control), Southbridge (ATA bus control), and a multitude of other small processors for tasks such as controlling the read-heads in a hard drive, how to process sound, and other non-trivial tasks.

Another Answer

The CPU (Central Processing Unit) is the core of any computer, while the microprocessor refers to the whole functional chip that is inserted into a motherboard. The CPU is the sub architecture of the microprocessor that interprets the program instructions and cascade triggers the sub-functions of each instruction.

What do you mean by multiplexing the bus?

If you have less no of data than the no of bits of data or address to b transfer Multiplexing mean to manage given busses in such a way that data or address can be transferred perfectly

What is meant by latching in microprocessors?

It is the time period in the clock cycle in which the signal on the bus must be the valid expected data. ie. The stable period of the data transmission that will then be loaded into the microprocessor as the actual data.

What is an explanation of the 8288 Bus controller?


inteT 8288 BUS CONTROLLER FOR iAPX 86, 88 PROCESSORS Bipolar Drive Capability Provides , The Intel"' 8288 Bus Controller is a 20-pin bipolar component for use with medium-to-large iAPX 86, 88 , ). ÂËN I Address Enable: AEN enables command outputs of the 8288 Bus Controller at least 115ns after , of two ways dependent on the mode of the 8288 Bus Controller. I/O Bus Mode - The 8288 is in the I/O , no arbitration is present. This mode allows one 8288 Bus Controller to handle two external busses. No ... OCR Scan
datasheet

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multiprocessor 8089 intel 8288 bus generator 8288 8284 clock generator pin diagram of 8288 bus controller 8288 bus controller signal 8288 bus controller by intel intel 8288 bus controller intel 8288 8288 bus controller datasheet abstract
datasheet frame
Abstract: 8288 Bus Controller DISTINCTIVE CHARACTERISTICS g • Bipolar drive capability • Multi-master or I , OPTION Not Applicable c. DEVICE NUMBER/DESCRIPTION 8288 Bus Controller b. PACKAGE TYPE P = 20-Pin , HIGH. This mode allows one 8288 Bus Controller to handle two external buses. This allows the CPU to , , the 8288 functions in the I/O Bus mode. When LOW, the 828B functions in the System Bus mode. 12 AIOWC , to read a Cascade Address from a master Priority Interrupt Controller onto the data bus. PDEN (IOB ...

What is the importance of an internal data bus?

Buses are just conductors to carry data from one place to another place in terms of microprocessor from one register to another register.

Regards,
Rajper

How much memory can a 48-bit memory register address?

2 to the power of 48 bytes

which is

2^48 = 281474976710656 bytes

274877906944 kilobytes

268435456 megabytes

262144 gigabytes

256 terabytes

What is psw of 8086?

Flag Register (PSW)

  • Status is indicated with individual bits:
    • 0 - CF - Carry Flag
    • 2 - PF - Parity Flag
    • 4 - AF - Auxiliary carry Flag
    • 6 - ZF - Zero Flag
    • 7 - SF - Sign Flag
    • 8 - TF - Trap Flag
    • 9 - IF - Interrupt Flag
    • 10 - DF - Direcetion Flag
    • 11 - OF - Overflow Flag

Is physical address the home address?

Yes, a physical address would the the same as a person's address of their home. An example of a non-physical address would be a PO Box address.

What does the number of bits used to represent a memory address determine?

The number of bits used to represent a memory address determines the number of different addresses that can be formed. If the number of bits is N, then 2N addresses can be formed.

  • If N is 16, as it is in the 8085, then 216 = 65,536.
  • If N is 20, as it is in the 8086/8088, then 220 = 1,048,576.
  • If N is 24, as it is in the IBM 360/44, then 224 = 16,777,216.
  • If N is 32, as it is in most 32 bit modern processors, then 232 = 4,294,967,296.
  • If N is 64, as it is in most 64 bit modern processors, then 264 = 18,446,744,073,709,551,616.

Note that the amount of addressable memory is not the same as the amount of physical memory. As addressability goes up, often physical memory does not match it, which means that effective addressability is limited.

Write a sequence of instruction to exchange two register contents using stack in 8086 processor?

To exchange two registers, say the BX and CX registers, in the 8086 using the stack, you can use...

PUSH BX

PUSH CX

POP BX

POP CX

... Of course, this is for 16 bit operation. If you want 8 bit operation, you will need to do more than that, because stack operations are always 16-bit operations.

How do you register for the series 63 exam?

First, you need to check some requirements you need to fulfill that will comply to FINRA's(Financial Industry Regulatory Authority) requirements and then after that find an approved and accredited series 63 licensing exam provider online or in a local school. You can also try to take a preparatory course that will help you to easily pass the actual series 63 license exam.

Write a 8086 ALP that copies a string to another location in the memory?

Data Segment

string 1 db 'This is source $'

string2 db 15 dup()

Data Ends

Assume cs:code, ds:data

org 100h

Code segment

Mov AX, data

Mov DS, AX

Mov si, offset string1

Mov di, offset string2

Mov CX, 0015

MOVSB

Mov AX, 004ch

Int 21h

Code Ends

End