explain genral machine structure in system software???
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Machine Structure in system software consists of -
1. Instruction Interpreter
Instruction Interpreter Hardware is a group of circuits that perform operation specified by instructions fetched from memory.
2. Location Counter
Location Counter can be called as Program/Instruction Counter which points to current instruction being executed.
3. Working Registers
Working registers are called as "scratch pads" because they used to store temporary values during calculation.
CPU interfaces with Memory through MAR & MBR
MAR (Memory Address Register) - has address of memory location.
MBR (Memory Buffer Register) - has copy of address given by MAR.
Memory controller is used for data transfer between MBR & memory location specified by MAR.
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