Problem

Recall that the UART base address is \( 0 x F 0000000 \) and the UART registers and buffers used in Project 3 , in order, are the command register, status register, and receive buffer. If register \( \$ \) s 0 contained 0xF0000004, what address offset from \( \$ \) s0 would need to be used in order to access the command register?
\( -8 \)
\( -4 \)
0
4
8
None of the above

Answer

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Answer

4 - 8 = -4

Steps

Step 1 :\$s0 = 0xF0000004

Step 2 :0xF0000004 - 0xF0000000 = 4

Step 3 :4 - 8 = -4

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