lwdi

Load Word with Decoration Indexed

lwdi RT, RA, RB

Loads a word and sends decoration sideband signals to the bus.

Details

Loads a 32-bit word from memory at an address computed from two general-purpose registers and transmits sideband decoration signals. This is an embedded category instruction used in specialized memory systems with no condition register or status updates.

Pseudocode Operation

EA ← RA + RB
RT ← [EA][32:63]
Send decoration signals on memory bus

Example

lwdi r3, r4, r5

Encoding

Binary Layout
31
0
RT
6
RA
11
RB
16
788
21
/
31
 
Format X-form
Opcode 0x7C000628
Extension Embedded

Operands

  • RT
    Target
  • RA
    Base
  • RB
    Index