| Register Number | Mnemonic Name | Register Number | Mnemonic Name | |||
|---|---|---|---|---|---|---|
| $0 | $zero | Permanently 0 | $24, $25 | $t8, $t9 | Temporary | |
| $1 | $at | Assembler Temporary | $26, $27 | $k0, $k1 | Kernel | |
| $2, $3 | $v0, $v1 | Value returned by a subroutine | $28 | $gp | Global Pointer | |
| $4-$7 | $a0-$a3 | Subroutine Arguments | $29 | $sp | Stack Pointer | |
| $8-$15 | $t0-$t7 | Temporary | $30 | $fp | Frame Pointer | |
| $16-$23 | $s0-$s7 | Saved registers | $31 | $ra | Return Address |
There are also 32 floating point registers $f0 – $f31.
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