On Sunday, 22 April 2012 at 18:36:06 UTC, Alex Rønne Petersen
wrote:
On 22-04-2012 20:12, Marco Leise wrote:
Am Sun, 22 Apr 2012 11:55:35 +0200
schrieb "Bernard Helyer"<[email protected]>:
https://github.com/bhelyer/DDCPU-16
DDCPU-16 is a D implementation of Notch's (of Minecraft fame)
DCPU-16, a fictional 16 bit CPU for his upcoming game, 0x10c.
More info at http://0x10c.com, including specs.
You'll see a grand total of two source files, and one is only
really there for my testing. The only interesting module is
dcpu16.cpu, which contains a class CPU with two public
methods of
note: load(ushort[]) to load code and run(int) to run it for a
minimum number of cycles.
The CPU code is completely freestanding, with no dependencies
(even on Phobos) and is @safe ready, and pure where possible.
Manu is planning on hooking up some virtual hardware to it
(which
is described in basic form elsewhere). No real reason for
this,
just needed something to fill a Sunday.
I've only tested it to the extent that I've stepped through
Notch's
example in the spec (the one loaded in main.d) and verified
that
works, but I'm sure there'll be more bugs lurking. If you find
the bugs that I'm sure are still lurking, create an issue on
GitHub.
-Bernard.
Haha, just today I watched a video about it and thought "D"CPU
.. well if that isn't a call for action ;) Unfortunately Java
has a native unsigned 16-bit data type (char). Otherwise Notch
would probably have chosen D for writing 0x10^c. ;)
As with Minecraft, I like the vision and technical
realisation, but I wouldn't pay for and play them. I'm sure
you had fun writing the CPU simulator. We wrote one (as a
class project) at a vocational school a while back - in Java.
It was for an 8086 and I did the CPU core logic. Most
functions could be classified (like logical OR/XOR/...,
accesses regs,mem,...) but for the rest I didn't find any
pattern and called the corresponding class (translated)
"ThenAMiracleHappens", referring to the well known comic:
http://blog.wisefaq.com/wp-content/uploads/2008/05/amoh-small.jpg
It was spiced with a two lines long ternary operator :?
expression and no further comments. :D
I think the fact that you have to use 'char' as 'ushort' in
Java says enough about the language and VM. ;)
/me runs
My latest issue with Java is the trend to add annotations instead
of keywords, like @Override, or the new type annotations like
@NotNull and so on.
Its slowly going to annotation hell.
