The major difference between the 8085 and the 8086/8088 is that the 8085 is an 8 bit computer, and the 8086/8088 is a 16 bit computer.
Note: it was considered at the time by Intel that every new microprocessor must include direct equivalent instructions of its predecessor even if the instructions were remapped and no longer binary compatible, because while some software companies were using compilers (e.g. Intel's PL/M) many insisted on using only assemblers. Intel would facilitate the transition period by supplying a special program that read assembly source code for the older microprocessor and write assembly source code for the new microprocessor. This only worked because each instruction had a one for one equivalent, even though the assembly mnemonics and syntax were different and the binary machine code was different. After the x86 architecture was created by the 8086 this was discontinued, as the instruction set was never again remapped only extended while maintaining full binary compatibility with the older instruction set core.
The 8086 and 8088 are the same processor, a 16 bit processor, with the same instruction set, registers, and architecture. The 8086, however, runs on a 16 bit bus, while the 8088 runs on an 8 bit bus. As a result, the 8086 is capable of fetching and storing two bytes per bus transaction while the 8088 can only do one byte. In this aspect, the 8086 is twice as fast as the 8088, buswise, at the cost of greater bus complexity, but that depends on the instruction mix, as total performance could be limited by processor time as well.
The major differences between the 8085 and 8086/8088 are...
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The major difference between the 8085 and the 8086/8088 is that the 8085 is an 8 bit computer, and the 8086/8088 is a 16 bit computer.
Comparision between motorola6800 And Intel 8086
The 8085 microprocessor was an enhanced version of the 8080, primarily running on a single +5V power supply, hence the designation 8085.The 8086 microprocessor was an enhanced version of the 8085, primarily running as a 16 bit processor, hence the designation 8086.The 8088 microprocessor (part of the 8086/8088 family) was a version of the 8086 that run on an 8 bit bus, hence the designation 8088.
The most significant difference between the Intel 8085 and 8086 microprocessors is that the 8085 is an 8-bit system and the 8086 is a 16-bit system. This difference allows the 8086 system to have a much larger set of operational instructions and can make calculations to more significant places. Note: the 8085 processor does have two 16-bit registers. The pointer and the program counter.
The difference between the 8086 and the 8088 is that the 8086 has a 16 bit data bus and that the 8088 has an 8 bit data bus. Both processors are the same 16 bit processor, and both have a 20 bit address bus. The 8086 is twice as fast as the 8088 in terms of data transfer rate on the bus for the same bus clock speed.
Intel named the 8085 after the 8080. The 5 means it runs on a single +5V power supply, as opposed to the 8080 which needed +5V, -5V, and +12V. The predecessors of the 8085 were the 8080, 8008, 4040, and 4004. Intel named the 8086/8088 after the 8085. It was considered the logical continuation of the 8085 family, but as a true 16-bit processor. The 8086 is a 16-bit computer running on a 16-bit bus. The 8088 is the same 16-bit computer, but it runs on an 8-bit bus, and it was the heart of the first IBM PC.
a number (1) because 8085+1=8086
8080
85 is a 8 bit processor,number of flags are 5 and memory capacity is 64KB while 86 is a 16 bit processor ,number of flags are 9 and memory capacity is 1 MB.The main difference between 8085 and 8086 is that 8086 uses pipelining.
The data bus of 8085 is 8 bit.Its operating frequency is 3.03 Mhz.Address bus is 16 bit. The data bus of 8086 is 16 bit.Its operating sfrequency is 5 MHZ.Address bus is 20 bit.
It was the first Intel 8 bit processor to which followed the 8086, then the 80186, 80286, etc all of which were code compatible and are often referred to simply as x86 family processors.
MS-DOS is a look-alike and work-alike of CP/M, only it was written for 8086/8088 processors. CP/M was originally written for 8080 processors.
Because IBM wanted to build a computer with an 8-bit data bus. The 8086 and 8088 are the same processor, with the 8086 running on a 16-bit data bus, and the 8088 running on an 8-bit data bus. This allowed IBM to make the most use of older designs that supported 8-bit data buses, such as the 8080, the 8085, and the Z80.