CODEWITHSUNDEEP
assemblymips
jaindoe
jaindoe

Reputation: 79

MIPS architecture R-type explanation

i try to learn the MIPS architecture and i kind of stuck at the R-Type instruction set. i know that in MIPS there is 32 registers each can old 32 bits data. but in R-type the rs rt and rd fields only 5 bits long. so what if i want to do something like add $t0, 4000, 5000? how that instruction is going to fit in R-TYPE or even bigger numbers thanks in advance

Upvotes: 0

Views: 273

Answers (1)

Alexey Frunze
Alexey Frunze

Reputation: 62048

There are no ALU instructions to add two constants. You can either add two registers or a register and a constant.

This is what you can do:

li $t0, 4000
addiu $t0, $t0, 5000

or

li $t0, 4000
li $t1, 5000
addu $t0, $t0, $t1

Upvotes: 1

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