SB - RISC-V instruction reference

sbStore byte 
Stores the low 8 bits of t1 at the address in t2 plus an offset.
RISC-V manual: sb 
Used in Arrays and stringsRISC-V assembly
ecallRISC-V assembly
Reverse a string in placeRISC-V assembly
Print a nonnegative number in bases 2–36RISC-V assembly
ChiptuneRISC-V assembly
Sampled soundRISC-V assembly
 
Forms  sb , ()  
Pseudo-instructionsThe assembler turns these into one or more real instructions.
  sb , ()  
Store the low-order 8 bits of $t1 into the effective memory byte address
 sb ,   
 sb , ,   
 sb , ,   
  sb , %lo()()  
Store to Address
Operands t1 Any integer register, x0 to x31, or its named alias, such as zero, t0 or t6. 
imm12 A signed 12-bit immediate, -2048 to 2047. 
t2 An integer register. It may be the same register as t1. 
imm32 A 32-bit immediate, -2147483648 to 4294967295. 
label A named address in the program, such as the start of a loop or a variable in .data. 
 # value is initialized and naturally aligned for this operation.
.data
value: .word 0
.text
la t0, value
li t1, 42
# Store 42 (byte 2A) at value; inspect Memory.
sb t1, 0(t0)