• notes on instruction set

• notes on the assembler

• notes on loader

• notes on spim/xspim commands

• notes on xspim

Notes on the instruction set:

• Keep in mind that the SPIM "instructions" marked with a dagger in the documention are not actual machine instructions, but are macros.

• Though the documentation does not seem to mention it, the registers in Coprocessor 0 (the coprocessor which handles traps, etc.) are named using the notation $*. So for example the Cause register, listed as number 13 in the documentation, is referred to as $13.

Notes on the assembler:

• Register 0 is referred to as $0.

Notes on the loader:

• Default starting points are 0x00400000 for main() and 0x10010000 for the data.

Notes on spim/xspim commands:

• Breakpoints are taken to be decimal, so if you mean hex, use "0x."

Notes on xspim:

• The usual X11 "-geom" command-line argument can be used to position the window, e.g.

  xspim -geom +100+100
  

• You can use both the scroll bars and arrow keys to move within windows.