STR (Store Register)

Stores a value from a register into memory.

32-bit Store Operations (STR)

These instructions store 32-bit values from a register into memory.

Store Index

0x41 STR [rIdx], rSrc

Uses the address stored in rIdx to store a 32-bit value from rSrc into memory.

Argument	Description
rIdx	The register containing the memory address to write to.
rSrc	The source register where the data to be stored is.

Store Offset

0x42 STR [rIdx + imm16], rSrc

Adds a signed 16-bit offset to rIdx to form an effective address, then stores the 32-bit value from rSrc at that location in memory.

Argument	Description
rIdx	The base register containing the memory address.
imm16	A signed offset (−32,768 to 32,767) added to the base address.
rSrc	The source register where the data to be stored is.

Store Scaled Offset

0x43 STR [rIdx + rOff * imm4], rSrc

Computes an effective address as rIdx + (rOff × imm4), then stores the 32-bit value in rDst at that memory location.

Argument	Description
rIdx	The base register containing the memory address.
rOff	The register whose value is scaled and added to the base address.
imm4	A 4-bit scale factor (0–15) multiplied with rOff to form the offset.
rSrc	The source register where the data to be stored is.

Store Absolute

0x44 STR [imm32], rSrc

Stores the 32-bit value from rSrc into the fixed memory address specified by imm32.

Argument	Description
imm32	The 32-bit absolute address to write to.
rSrc	The source register where the data to be stored is.