Question

What is the vector address of RST 6.5 interrupt?

• A. 002CH
• B. 0034H
• C. 0038H
• D. 003CH

Hint:

Use the formula \textbf{8 × interrupt number} to get the vector address for RST interrupts in 8085. For RST 6.5, just multiply 6.5 by 8.

Answer 1

The Correct Option is B

In the 8085 microprocessor, the RST interrupts are vectored, meaning each has a fixed memory location (address) where the control is transferred when the interrupt is acknowledged.
The formula for the vector address of RST n is:
\[ \text{Address} = 8 \times n \] For RST 6.5:
\[ \text{Address} = 8 \times 6.5 = 52 \text{ (decimal)} = 0034H \] Hence, the vector address of RST 6.5 is 0034H.