The pin diagram of 8088-microprocessor, Assembly Language

Pin diagram of 8088 :

The pin diagram of 8088 is shown in given figure. Most of the 8088 pins and their functions are exactly similar to the corresponding pins of 8086.  Hence the pins that have different functions ortimings are discussed in this section. Amongst them are  the pins that have a common fun.

827_pin diagram 8088.jpg

1) AD7-AD0 (Address/Data):  These lines constitute the address/data time multiplexed bus. During T1 the bus is used for conducting addresses and during T2, T3, Tw andT4 states these lines are utilized for conducting data. These are tristate during 'hold acknowledges'and 'interrupt acknowledge' cycles.

2) A15-A8 (Address Bus): These lines provide the address bits A8 to A15 in the total bus cycle. These have not be latched for obtaining a stable valid address.  These  are  active  high  and  are  tristated  during  the 'acknowledge' cycles. Notice, as the 8088 data bus is only of 8 bits, there is no requirement of the BHE signal.

3) SS0: A new pin SS0 is introduced in 8088 instead of BHE pin in 8086. In minimum mode, the pin 880 is logically equivalent to the S8 in maximum mode.

4) IO/M: This pin is similar to M/IO pin of 8086, but it givesan 8085 compatible memory/IO bus interface. The signals DT/R, IO/M, SSO might be decoded to interpret the activities of the microprocessor as in minimum and maximum mode.

 

Posted Date: 10/10/2012 3:42:19 AM | Location : United States







Related Discussions:- The pin diagram of 8088-microprocessor, Assignment Help, Ask Question on The pin diagram of 8088-microprocessor, Get Answer, Expert's Help, The pin diagram of 8088-microprocessor Discussions

Write discussion on The pin diagram of 8088-microprocessor
Your posts are moderated
Related Questions
i have a question.

write an assembly language program that has two subroutines : one for encrypting alphabates of a string and second fo decrypting the encoded string . in encryption simply converta

Interrupt When the CPU detects an interrupt signal, it stops activity of current and jumps to a special routine, known an interrupt handler. This handler then detects why the i

Write a 68hc11 assembly language program which generation of the following waveforms connected to your DAC i)   Square wave ii)  Saw tooth waveform iii) Sine wave iv) U

$NOMOD51 $NOSYMBOLS ;***************************************************************************** ; Spring 2013 Project ; ; FILE NAME : Project.ASM ; DATE : 3/30/20

1. Start your program at address $8500. To do this you need to inform the assembler, through the EQU and ORG assembler directives, that you want your program to start at $8500. Thi

implement the following c++ code in assembly language using the block-structured .IF and .while directives

Write a MIPS/SPIM assembly language program that prints the smallest and largest values found in a non-empty table of N word-sized integers. The address of the first entry in your

Using the windows32 framework, write a complete 80x86 program for Programming Exercises 4.3 number 3, on pages 130-131 of the textbook. Follow all coding conventions mentioned in

LDS/LES Instruction execution :  LAHF : Load AH from Lower Byte of Flag: - This instruction loads the AH register with the lower byte of the flag register. This instruction ca