80 lines
2.9 KiB
C
80 lines
2.9 KiB
C
/* *****************************************************************************
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* libg1m/format/caspro.h -- the newer CAS file 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_CASPRO_H
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# define LIBG1M_FORMAT_CASPRO_H
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# include <stdint.h>
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# pragma pack(1)
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/* This is the later CASIOLINK format. It is more or less a raw dump of the
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* communications protocol the 9850 uses. It is basically an MCS file.
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*
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* A CASIOLINK-encoded file is made of one header and one or more parts.
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* Each element is preceded by a 0x3A, and is a packet in the communications
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* protocol interpretation. */
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/* ************************************************************************** */
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/* Header (first element) */
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/* ************************************************************************** */
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/* The header is the following: */
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struct caspro_header {
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/* types */
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uint8_t type[4];
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uint8_t data[3];
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/* data length */
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uint8_t used; /* 0x00 if is reset/unused, 0x01 if used */
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uint16_t length; /* for a variable: same value as in `used` */
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uint8_t name[8];
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/* variable-related data */
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uint8_t prefix[8]; /* "Variable" for vars, 0xFFs otherwise */
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uint8_t aux[8]; /* variable: "R\x0A"/"C\x0A", editor: password */
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/* something else (?) */
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uint8_t nl[2]; /* 'NL' */
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uint8_t _ffs[11];
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/* end of packet */
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uint8_t checksum;
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};
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/* ************************************************************************** */
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/* Variable/number */
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/* ************************************************************************** */
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/* Variable has the following structure (described in a comment):
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*
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* uint8_t magic[4];
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* Four bytes, always {0x00, 0x01, 0x00, 0x01} for a variable;
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* cas_bcd_t real;
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* The real part of the variable.
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*
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* If the real part has the complex flag enabled, then the following is there:
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*
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* cas_bcd_t imgn;
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* The imaginary part of the variable.
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*
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* Then finally, everytime:
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*
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* uint8_t checksum;
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* The checksum (calculated as for the header). */
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/* TODO: other file formats */
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# pragma pack()
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#endif /* LIBG1M_FORMAT_CASPRO_H */
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