This is the MIPS-I ArchC 2.0-beta functional model.

This model has the system call emulation functions implemented,
so it is a good idea to turn on the ABI option.

To use acsim, the interpreted simulator:

    acsim mips1.ac -abi                 (create the simulator)
    make -f Makefile.archc              (compile)
    mips1.x --load=<file-path> [args]   (run an application)

The [args] are optional arguments for the application.

There are two formats recognized for application <file-path>:
- ELF binary matching ArchC specifications
- hexadecimal text file for ArchC


To generate binary utilities use:

    acbingen.sh -i<abs-install-path> -a<arch-name> mips1.ac

This will generate the tools source files using the architecture
name <arch-name> (if omitted, mips1 is used), copy them to the
binutils source tree, build and install them into the directory
<abs-install-path> (which -must- be an absolute path).
Use "acbingen.sh -h" to get information about the command-line
options available.


For more information visit http://www.archc.org


CHANGELOG:
==========

Version 0.7.8:
- Added binary utilities support files
- ArchC 2.0 compliant


Version 0.7.7-archc2.0beta3:
- Removed delayed assignements by creating the npc register
- Created lo and hi registers and removed them from RB[32] and RB[33]


Version 0.7.6-archc2.0beta3:

- Added license headers
- Changed the assembly information for 'break' instruction


Version 0.7.5-archc2.0beta1:

- Model compliant with ArchC 2.0beta1


Version 0.7.5:

- Added 'bgtu' pseudo-insn
- Added alternative assembly syntaxes to the lwl and lwr instructions
- Fixed the operand encoding of the nop 'instruction'


Version 0.7.4:

- Included assembly language syntax information


Version 0.7.3:

- Use ArchC support for debug messages: ac_debug_model.H
- Use operator[] syntax to read register banks, which is faster


Version 0.7.2:

- Included optimization instruction methods for compiled simulation
- Separate nop instruction from sll to optimize simulation


Version 0.7.1:

- Included file for GDB integration


Version 0.7.0:

- Model passed selected Mediabench and Mibench applications