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
How to write an assembly program The initial step in writing an assembly language program is to identify and study the problem. After studying the problem, choose the logical m

Project Description: Write an 80x86 assembly program that performs the following functions: Reads a set of integers from a file into an array. The data file name is to be

Write an assembly language program that defines symbolic constants for all seven days of the week

The real time System (RTS) : Calling the clock real-time is somewhat of a misnomer because it only shows the time setting it has been given. The RTC is the other half of chip

1. Write a program that will generate an array of ten random 32-bit integers, and that will  display on the monitor the numbers followed by either the words " has the fourth bit se

EVOLUTION OF MICROPROCESSOR : The digital circuits and systems may be broken into two part: 1) Sequential Circuit and 2) Combinational Circuits     Norm

8251 Programmable/Communication Interface As an instance of a serial interface device let us suppose Intel's 8251 A programmable communication interfaces. The 8251A is diagram

Read Architecture: Look Through Main memory that located is conflicting the system interface. The least concerning feature of this cache unit is that it remain between the proc

write an assembly language program to find average of odd numbers from an array of 8 bit numbers

INTO : Interrupt on Overflow:- It is executed, when the overflow flag OF is set. The new contents of IP and CS register are taken from the address 0000:0000 as described in INT