Compare 8086 And 8088

Basic

Main Difference Between 8086 And 8088

IntelCompare 8086 And 8088Compare 8086 And 8088

8088 Microprocessor

8086 and 8088 comparison 117 8086 Microprocessor Memory mapping I/O mapping 20 bit address are provided for I/O devices 8-bit or 16-bit addresses are provided for I/O devices The I/O ports or peripherals can be treated like memory locations and so all instructions related to memory can be used for data transmission between I/O device and processor Only IN and OUT instructions can be used for. 8086 microprocessor supports memory segmentation. It has less number of transistors compare to 8086 microprocessor. It is about 6500 in size. It has more number of transistors compare to 8085 microprocessor. It is about 29000 in size. It is accumulator based processor. It is general purpose register based processor. It has no minimum or maximum.

Compare 8086 Vs 8088

8088
The instruction Queue is 4 byte long.
-even or lower bank
The memory in 8088 does not divide into two banks.
The data bus of 8088 is 8-bit wide.
It has BHE (bar) signal on pin no. 34 & there is no SSO (bar) signal.
It does not have BHE (bar) signal on pin no. 34 & has only SSO (bar) signal. It has no S7 pin.
Control pin in 8088 is IO/M (bar).
It needs one machine cycle to R/W signal if it is at even location otherwise it needs two.
It needs one machine cycle to R/W signal if it is at even location otherwise it needs two.
In 8086, all address & data Buses are multiplexed.
In 8088, address bus; AD7- AD0buses are multiplexed.
It needs two IC 74343 for de-multiplexing AD0-AD19.
It needs one IC 74343 for de-multiplexing AD0-AD7.
Maximum supply current 340mA.
Two clock speed: 5, 8 MHz