NAME
CPU::Emulator::DCPU16 - an emulator for Notch's DCPU-16 virtual CPU for the game 0x10c
SYNOPSIS
open(my $fh, ">:raw", $file) || die "Couldn't read file $file: $!";
my $program = do { local $/=undef; <$fh> };
$program = CPU::Emulator::DCPU16::Assembler->assemble($program) if $file =~ /\.dasm(16)?$/;
# Create a new CPU and load a file
my $cpu = CPU::Emulator::DCPU16->new();
$cpu->load($program);
# Run it ...
$cpu->run;
# ... which is basically the same as
do { $cpu->step } until $cpu->halt;DESCRIPTION
DCPU-16 is a spec for a virtual CPU by Notch from Mojang (of Minecraft fame).
The spec is available here
http://0x10c.com/doc/dcpu-16.txt
METHODS
new
Create a new CPU.
load <program> [opt[s]]
Load a program. Forces as re-init of the CPU.
You can also do
my $cpu = CPU::Emulator::DCPU16->load($program, %opts);which is exactly the same as
my $cpu = CPU::Emulator::DCPU16->new(%opts);
$cpu->load($program);bytes_to_array <bytes>
Turn a scalar of bytes into an array of words
run [opt[s]]
Run CPU until completion.
Options available are:
- debug
-
Whether or not we should print debug information and at what level.
Default is 0 (no debug output).
- limit
-
Maxinum number of instructions to execute.
Default is 0 (no limit).
- cycle_penalty
-
The time penalty for each instruction cycle in milliseconds.
Default is 0 (no penalty)
- full_memory
-
Allow the PC to continue past the last instruction of the program (i.e the program_top).
This would allow programs to rewrite themselves into a larger program.
Default is 0 (no access)
halt [halt state]
Halt the CPU or check to see whether it's halted.
step [opt[s]]
Run a single clock cycle of the CPU.
Takes the same options as run.
METHODS TO GET THE STATE OF THE CPU
pc
The current program counter.
sp
The current stack pointer.
o
The current overflow.
program_top
The address of the first memory location after the loaded program.
register <location>
Get or set the value of a register.
memory <location>
Get or set the value of a memory location.
SEE ALSO
CPU::Emulator::DCPU16::Assembler
CPU::Emulator::DCPU16::Disassembler
ACKNOWLEDGEMENTS
Implementation inspiration came from:
- Matt Bell's Javascript implementation (https://github.com/mappum/DCPU-16)
- Brian Swetland's C Implementation (https://github.com/swetland/dcpu16)
- Jesse Luehrs's Perl Implementation (https://github.com/doy/games-emulation-dcpu16)
AUTHOR
Simon Wistow <simon@thegestalt.org>
COPYRIGHT
Copyright 2011 - Simon Wistow
Released under the same terms as Perl itself.
DEVELOPMENT
Latest development version available from
https://github.com/simonwistow/CPU-Emulator-DCPU16