where can I find a description of *all* MIPS instructions

Question

Does anyone know of a web site where I can find a list of 32-bit MIPS instructions/opcodes, with the following features:

• Clearly distinguishes between real opcodes and assembly-language macros (pseudo-instructions)
• Describes the instruction behavior including differences depending on privilege level.
• Indicates in which instruction set revision the instruction was introduced/revised (e.g. MIPS I, MIPS II, MIPS32, etc.)
• Includes privileged instructions such as syscall.

I am aware of numerous web sites which document "part of" the instruction set, mostly for teaching purposes. They tend to leave out or only partially describe floating-point and privileged instructions.

In case you're wondering, I'm looking at Verilog code for a MIPS processor subset, and trying to figure out exactly to what extent it complies with the instruction sets of any real MIPS processors!

Answer 1

Okay, I found something!

MIPS offers a set of "MIPS 32 reference manuals" which refer to the latest, standardized instruction set (MIPS32v2): here

These include just about everything, except the information about which version the instructions originated in :-(

WAIT A SEC...

This class website at Cornell includes links to what appears to be the same manual, but is in fact an older version of it, and volume 2 of that older version does in fact include information about when the instructions where first introduced. Woohoo!

Why would MIPS remove this information from the revised documentation? There doesn't seem to be any explanation in the revision history.