J-type

<aside> 💡 Purpose: Function: control program flow

</aside>

Assembly Language

Format: [instruct] [addr]

• [instruct] name of instruction (e.g., j: jump to address)
• [addr] memory address

Machine Language

• Register Modified: J-type instructions only alter the Program Counter (PC).

• Address Size Issue: Designed for 26-bit addresses, not full 32-bit.
  • Restriction 1: Target address must be a multiple of 4 (2 less bits needed)
  • Restriction 2: Must share the same upper 4 bits as the current PC
  • That is,