Q1 (2pts) Register Transfer Language (RTL) Trace the data flow of the following code using RTL. Include the first instruction fetch. LDR R2, [R1]

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This is an example format:

Fetch:PC -> IR (INST|RUCTION REGISTER)

Decode:IR -> R2,R1, R0

Execute: R4,R0 -> ALU(ARITHMETIC LOGIC UNIT)

Memory Read:ALU -> R2

Writeback: R2 -> R2

Subtract:R2 -R1-R0 -> R2

MAR <- PC

PC <- PC + 2

IR <- Mem[MAR]

R2 <- R1 - R0