[Verse 1]
Deep inside the silicon heart, there's a story to unfold
Control unit calling shots, like a conductor bold
ALU does arithmetic, logic operations too
Registers hold data close, cache keeps it fresh and new
[Chorus]
Fetch decode execute, the cycle never ends
Load store jump and branch, on these we all depend
RISC or CISC design, each path has its own way
Instructions flow like music through the CPU today
[Verse 2]
Pipeline stages working smooth, like an assembly line
Instruction register holds the code, program counter keeps in time
Memory hierarchy levels, from registers to RAM
Address bus carries locations, data bus moves what we can
[Chorus]
Fetch decode execute, the cycle never ends
Load store jump and branch, on these we all depend
RISC or CISC design, each path has its own way
Instructions flow like music through the CPU today
[Bridge]
Opcode tells us what to do, operands show us where
Immediate or register mode, addressing everywhere
Branch prediction looking ahead, hazards we must avoid
Superscalar execution makes parallelism deployed
[Verse 3]
Machine code speaks in zeros ones, assembly makes it clear
MOV and ADD and CMP, mnemonics we hold dear
Stack pointer manages calls, base pointer frames the scene
Interrupts can break the flow, but handlers keep it clean
[Chorus]
Fetch decode execute, the cycle never ends
Load store jump and branch, on these we all depend
RISC or CISC design, each path has its own way
Instructions flow like music through the CPU today
[Outro]
From transistors to instructions, layers building high
The architecture symphony plays beneath the software sky