stdi

Store Word with Decoration Indexed

stdi RS, RA, RB

Stores a word and sends decoration sideband signals.

Details

Stores a 32-bit word from a general-purpose register to memory at an address computed from two other 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
[EA][32:63] ← RS
Send decoration signals on memory bus

Example

stdi r3, r4, r5

Encoding

Binary Layout
31
0
RS
6
RA
11
RB
16
916
21
/
31
 
Format X-form
Opcode 0x7C000728
Extension Embedded

Operands

  • RS
    Source
  • RA
    Base
  • RB
    Index