MIPS Architecture - MIPS I Instruction Formats

MIPS I Instruction Formats

Instructions are divided into three types: R, I and J. Every instruction starts with a 6-bit opcode. In addition to the opcode, R-type instructions specify three registers, a shift amount field, and a function field; I-type instructions specify two registers and a 16-bit immediate value; J-type instructions follow the opcode with a 26-bit jump target.

The following are the three formats used for the core instruction set:

Type -31- format (bits) -0-
R opcode (6) rs (5) rt (5) rd (5) shamt (5) funct (6)
I opcode (6) rs (5) rt (5) immediate (16)
J opcode (6) address (26)

Read more about this topic:  MIPS Architecture

Famous quotes containing the word instruction:

    I turn my gaze
    Back to the instruction manual which has made me dream of
    Guadalajara.
    John Ashbery (b. 1927)