What are the major differences between the SAP-1 SAP 2 and SAP 3 architectures?

Differences between SAP-1 and SAP-2 Architecture

SAP-1 SAP-2
It has only adder/subtractor. It has ALU.
It does not have flag. It has 2 flags.
It does not have temporary register. It has temporary register.
It has single register (B). It has 2 registers (B and C).

What are the components of the SAP-1?

SAP-1 Processor Architecture

  • ~400 Hz Clock.
  • 8-bit Data Bus.
  • 16-bit Control Word.
  • 5 Microsteps per Instruction.
  • 16 byte RAM.

What is SAP1?

The SAP-1 design contains the basic necessities for a functional Microprocessor. Its primary purpose is to develop a basic understanding of how a microprocessor works, interacts with memory and other parts of the system like input and output. The instruction set is very limited and is simple.

How many memory reference instructions does sap-1 has?

It has 72 instructions. The 8085 is an enhanced version of the 8080 with essentially the same instruction set (both are designed by Intel Corp.). The SAP1 instructions are upward compatible with the 8080/8085 instruction set.

What are the three steps of fetch cycle of SAP 1 Instruction?

Control Unit

  1. SAP-1 instruction cycle: 3 clock cycles to fetch and decode phase, 3 clock cycles to execute.
  2. the first three states are:
  3. controller has a 6-bit ring counter which continuously cycles from 000001 up to 100000 then resets (must be set to 000001 when we initialize the computer)

What is the function of the MAR register?

memory address register (MAR) – holds the address of the current instruction that is to be fetched from memory, or the address in memory to which data is to be transferred.

What are the three basic types of operands?

Operands can be immediate (that is, constant expressions that evaluate to an inline value), register (a value in the processor number registers), or memory (a value stored in memory).

Which is the first operation during fetch cycle?

The first step the CPU carries out is to fetch some data and instructions (program) from main memory then store them in its own internal temporary memory areas. These memory areas are called ‘registers’. This is called the ‘fetch’ part of the cycle.

What is NOP used for?

The NOP instruction does nothing. Execution continues with the next instruction. No registers or flags are affected by this instruction. NOP is typically used to generate a delay in execution or to reserve space in code memory….NOP.

Bytes 1
Operation PC = PC + 1
Example NOP

Which is the architecture of microprocessor?

Architecture of Microprocessor Its architecture consists of a central processing unit, memory modules, a system bus, and an input/output unit. The system bus connects the various units to facilitate the exchange of information. It further consists of data, address, and control buses to perform data exchanging properly.

What is the difference between operators and operands?

The operators indicate what action or operation to perform. The operands indicate what items to apply the action to.

What is the difference between SAP 1 and SAP 2?

SAP in SAP 1 and SAP 2 stands for Simple As Possible. Both refer to the models of microprocessors; SAP 2 is a successor to SAP 1. SAP 1 design is one of the basic model designs which fulfill basic requirements of a functional microprocessor.

What is the architecture of SAP R/1?

SAP R/1. SAP R/1 was the first version and it is one tier architecture in which three layers Presentation, Application and Database are installed in one system/server.

What are the features of sap 1?

It consists of simple and confined instruction set. It makes use of a 16 bytes memory (RAM) and a single 8 bit bus for transfer of data and address. Due to its limited capabilities it is usually used for academic purposes only. SAP 1 is followed by SAP 2 which is superior model to SAP 1 as many new features are added in this model.

Why do we have two versions of SAP HANA?

In order to be able to continue to deliver innovation without disruption, the bi-modal approach was introduced and SAP decided to create two versions. SAP HANA 2.0 started a new code line and is currently on its fifth SPS release (SPS 04 as the developer starts counting with 00). For SAP HANA 1.0, the innovation stopped with SPS 12 (May 2016).