89 lines
4.4 KiB
C
89 lines
4.4 KiB
C
/* *****************************************************************************
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* libg1m/format.h -- the G1M format description.
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* Copyright (C) 2017 Thomas "Cakeisalie5" Touhey <thomas@touhey.fr>
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*
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* This file is part of libg1m.
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* libg1m is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 3.0 of the License,
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* or (at your option) any later version.
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*
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* libg1m is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with libg1m; if not, see <http://www.gnu.org/licenses/>.
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* ************************************************************************** */
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#ifndef LIBG1M_FORMAT_H
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# define LIBG1M_FORMAT_H
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# include <stdint.h>
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/* Welcome on this new episode of the Monster Circus show! Today we'll present
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* to you the different formats surrounding CASIO calculators: open or closed,
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* legacy or legacy, obfuscated or not, I hope you'll enjoy them as much
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* as I don't! */
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/* ************************************************************************** */
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/* The CASIOLINK (CAS) format */
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/* ************************************************************************** */
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/* This is the first file format used by the CASIO community; it was
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* more or less a dump of the communications protocol CASIO used until
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* the fx-9860G (Graph 85) was announced, around 2004.
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* It was managed by the CaS software, made by Tom Wheeler with the help of
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* other people like Tom Lynn. This software was developed around 1997.
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*
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* There were two main versions of this protocol, leading to two different
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* versions of the CAS file specification: the original protocol, used on the
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* CFX-9700G (called cas in libg1m), and the newer protocol, used on the
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* CFX-9850 (called caspro in libg1m).
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*
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* Here are the two headers: */
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# include <libg1m/format/cas.h>
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# include <libg1m/format/caspro.h>
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/* ************************************************************************** */
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/* The FXI format */
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/* ************************************************************************** */
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/* fx-Interface, an old but well done proprietary interface by CASIO, has its
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* own format: the FXI format. It's an obfuscated format (althrough the
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* obfuscation algorithm has been found).
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*
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* It starts with the following obfuscated string: */
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# define FXI_OBF_MAGIC "\x32\x30" "\xF8\xA1"
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# define FXI_DEC_MAGIC "\xD5\xD7" "\x1F\x46" "FX-INTERFACE - YELLOW COMPUTING"
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/* Followed by loads of zero, then, the content. The description of the rest
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* of the format is described in this header: */
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//# include <libg1m/format/fxi.h>
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/* ************************************************************************** */
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/* The Casemul format */
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/* ************************************************************************** */
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/* Casemul is a CASIO emulator for Microsoft Windows. It is an old software
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* which was not updated since 2005. It can import and export other files,
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* but save its files in its own format, which use the .cas extension
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* (like the CASIOLINK format, but the two formats are completely different).
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*
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* It starts with a four-letter magic string, "ACFS". In fact, it is
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* "CASF", like in "CasFile", the name of the real header. */
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# define CASEMUL_MAGIC "ACFS"
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/* Discover the rest in its own header: */
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# include <libg1m/format/casemul.h>
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/* ************************************************************************** */
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/* The G1M/STD format */
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/* ************************************************************************** */
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/* Since around 2004, CASIO has adopted a single "superformat"; we call it
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* CASIO's standard format, or the G1M format (it doesn't really have a
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* *public* name, other than its magics, like USBPower or CASIO).
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*
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* It doesn't have a single magic string, but a few. But the standard header
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* has the same format, so we consider it as the same format. */
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# include <libg1m/format/std.h>
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#endif /* LIBG1M_FORMAT_H */
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