Multiple choice

What is the standard interrupt and memory address for COM2?

  1. 3 and 03F8

  2. 4 and 03F8

  3. 2 and 02F8

  4. 3 and 02F8

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In standard IBM PC architecture, COM2 is conventionally assigned to Interrupt Request (IRQ) 3 and base I/O memory address 02F8 (while COM1 uses IRQ 4 and 03F8).