WHAT IS A in 8085a?
Register A is an 8-bit register used in 8085 to perform arithmetic, logical, I/O & LOAD/STORE operations. Register A is quite often called as an Accumulator. An accumulator is a register for short-term, intermediate storage of arithmetic and logic data in a computer’s CPU (Central Processing Unit).
Is 8085 and 8085a same?
The Intel 8080 microprocessor was the predecessor of the 8085. Both was designed and manufactured by Intel, Both was an 8-bit Microprocessor….Difference between 8080 and 8085 Microprocessor :
| Sr.No. | 8080 microprocessor | 8085 microprocessor |
|---|---|---|
| 10 | 8080 supports upto 256 Input/Output(I/P) ports. | 8085 also supports upto 256 Input/Output(I/P) ports. |
What is the clock speed of 8085?
8085 operates on a clock frequency of 3MHz–6MHz depending upon the version selected. Clock is provided by a crystal oscillator of 2 times the frequency, so as to produce a 50% duty cycle clock. The minimum operating frequency of 8085 is 500kHz.
Why is the 8085 procesor called an 8 bit processor?
Why 8085 processor is called an 8 bit processor? Because 8085 processor has 8 bit ALU (Arithmetic Logic Review). Similarly 8086 processor has 16 bit ALU.
Is x86 a 32 bit?
x86 refers to a 32-bit CPU and operating system while x64 refers to a 64-bit CPU and operating system.
Why is x84 32 bit?
The x86 moniker comes from the 32bit instruction set. So all x86 processors (without a leading 80 ) run the same 32 bit instruction set (and hence are all compatible). So x86 has become a defacto name for that set (and hence 32 bit). AMD’s original 64 bit extension on the x86 set was called AMD64 .
Why is x86 so popular?
The IBM train It’s hard to shake 36 years of momentum, and that’s the main reason x86 is so popular. The IBM PC became an industry standard. IBM intended to own and control it, and that didn’t exactly work out for them. Within a couple of years, several companies sold IBM-compatible computers.
Why is x86 so bad?
x86 is a CISC machine. For a long time this meant it was slower than RISC machines like MIPS or ARM, because instructions have data interdependency and flags making most forms of instruction level parallelism difficult to implement.
What are the pros and cons of RISC and CISC?
RISC & CISC: Pros & Cons In terms of memory, RISC uses hardware to execute instructions with no memory references, while CISC uses many memory references to process complex instructions. In terms of execution, RISC has faster processing, while CISC has slower processing.
Is CISC dead?
The RISC vs CISC debate is fully dead. There is almost no difference between architectures these days.