246 lines
6.4 KiB
C
246 lines
6.4 KiB
C
/* vim:expandtab:ts=2 sw=2:
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*/
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/* Grafx2 - The Ultimate 256-color bitmap paint program
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Copyright 2018 Thomas Bernard
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Copyright 2008 Adrien Destugues
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Grafx2 is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; version 2
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of the License.
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Grafx2 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. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Grafx2; if not, see <http://www.gnu.org/licenses/>
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*/
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///@file oldies.h
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/// functions relative to old computers (Commodore 64, Thomsons MO/TO, Amstrad CPC, ZX Spectrum, etc.)
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/** @defgroup c64 Commodore 64
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* Some C64 video mode related functions
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* @{
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*/
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/**
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* Save a 3 layer picture to C64 FLI format
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*
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* @param bitmap a 8000 byte buffer to store bitmap data
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* @param screen_ram a 8192 byte buffer to store the 8 screen RAMs
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* @param color_ram a 1000 byte buffer to store the color RAM
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* @param background a 200 byte buffer to store the background colors
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* @return 0 for success, 1 if the picture is less than 3 layers, 2 if the picture dimensions are not 160x200
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*/
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int C64_FLI(byte *bitmap, byte *screen_ram, byte *color_ram, byte *background);
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int C64_FLI_enforcer(void);
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/**
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* Set the 16 colors Commodore 64 palette
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*/
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void C64_set_palette(T_Components * palette);
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/** @}*/
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/** @defgroup zx_spectrum Sinclair ZX Spectrum
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*
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* @{
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*/
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/**
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* Set the 16 colors ZX Spectrum palette.
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*
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* The ZX Spectrum palette is a 16 color RGBI palette.
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* The color components are in IGRB order.
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*/
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void ZX_Spectrum_set_palette(T_Components * palette);
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/** @}*/
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/** @defgroup cpc Amstrad CPC
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*
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* @{
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*/
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/**
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* Set 32 color HW Amstrad CPC palette
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*
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* The palette is in fact 27 colors, with some duplicates.
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* http://www.cpcwiki.eu/index.php/CPC_Palette
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*/
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void CPC_set_HW_palette(T_Components * palette);
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/**
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* Set 16 color default Amstrad CPC BASIC palette
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*
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* @note INK 14 and 15 are blinking on the real hardware.
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*/
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void CPC_set_default_BASIC_palette(T_Components * palette);
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/**
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* compare two RGB colors
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*
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* The RGB colors are compared in order as if they were
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* converted from CPC (27 color palette), as there are several
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* mapping of the 3 level CPC RGB signals.
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*
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* @return true if the RGB colors map to the same CPC color
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*/
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int CPC_compare_colors(T_Components * col1, T_Components * col2);
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/**
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* Check AMSDOS header
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*
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* see http://www.cpcwiki.eu/index.php/AMSDOS_Header
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*
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* @param[in] file an open file
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* @param[out] loading_address the loading address from the header
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* @param[out] file_length the file length written in the header
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* @return 0 if the file does not contain a valid AMSDOS header
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* @return 1 if it does.
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*/
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int CPC_check_AMSDOS(FILE * file, word * loading_address, unsigned long * file_length);
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/** @}*/
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/** @defgroup decb DECB binary format
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*
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* The DECB binary format was used on 6809 based machines :
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* Tandy CoCo, Dragon 32/64 and Thomson MO/TO.
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*
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* DECB stand for Disk Extended Color Basic and was a version
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* of the Microsoft BASIC-69 (their basic for Motorola 6809)
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* @{
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*/
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/**
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* Add a chunk to a DECB binary file
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*
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* @param f open file
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* @param size size of the memory chunk
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* @param address load address of the memory chunk
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* @param data data to add in memory chunk
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* @return true for success
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*/
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int DECB_BIN_Add_Chunk(FILE * f, word size, word address, const byte * data);
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/**
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* Add a chunk to a DECB binary file
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*
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* @param f open file
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* @param address run address of the binary file (LOADM,,R)
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* @return true for success
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*/
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int DECB_BIN_Add_End(FILE * f, word address);
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/**
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* Check if the file is in the DECB Binary format
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*
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* @param f open file
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* @return 1 if the file is in DECB Binary format, or else 0
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*/
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int DECB_Check_binary_file(FILE * f);
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/** @}*/
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/** @defgroup moto Thomson MO/TO
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* The Thomson MO/TO computer range was based on a Motorola 6809 CPU
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* and equiped with Microsoft Basic called Basic 1.0 for the first
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* versions and then Basic 128 or Basic 512 which included a DOS
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* and more features.
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*
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* The range includes :
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* - TO7
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* - MO5/MO5E
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* - TO7/70
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* - TO9
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* - MO6/MO5NR
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* - TO8/TO8D
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* - TO9
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* - Olivetti Prodest PC128 (a Thomson MO6 clone)
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* @{
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*/
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/**
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* to define a specific machine in the Thomson MO/TO range of machines
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*/
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enum MOTO_Machine_Type {
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MACHINE_TO7, ///< original TO7 with 8 colors
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MACHINE_TO770, ///< the TO7-70 had 16 colors
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MACHINE_MO5,
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MACHINE_MO6, ///<
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MACHINE_TO9,
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MACHINE_TO8 ///< TO8, TO8D and TO9+ are equivalent
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};
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/**
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* Graphic modes available in BASIC 128/512 with CONSOLE,,,,X instruction
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*/
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enum MOTO_Graphic_Mode {
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MOTO_MODE_40col = 0, ///< 320x200 16 colors with constraints
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MOTO_MODE_80col = 1, ///< 640x200 2 colors
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MOTO_MODE_bm4 = 2, ///< 320x200 4 colors without constraint
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MOTO_MODE_bm16 = 3, ///< 160x200 16 colors without constraint
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};
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/**
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* Checks if the file is a Thomson binary file (SAVEM/LOADM format)
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*
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* @param f a file open for reading
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* @return 0 if this is not a binary file
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* @return >0 if this is a binary file :
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* @return 1 no further details found
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* @return 2 This is likely a MAP file (SAVEP/LOADP format)
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* @return 3 This is likely a TO autoloading picture
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* @return 4 This is likely a MO5/MO6 autoloading picture
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*/
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int MOTO_Check_binary_file(FILE * f);
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/**
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* Convert a RGB value to Thomson BGR value with gamma correction.
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*/
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word MOTO_gamma_correct_RGB_to_MOTO(const T_Components * color);
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/**
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* Convert a Thomson BGR value to RGB values with gamma correction.
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*/
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void MOTO_gamma_correct_MOTO_to_RGB(T_Components * color, word bgr);
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/**
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* Set MO5 Palette
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*
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* http://pulkomandy.tk/wiki/doku.php?id=documentations:devices:gate.arrays#video_generation
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* https://16couleurs.wordpress.com/2013/03/31/archeologie-infographique-le-pixel-art-pour-thomson/
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*/
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void MOTO_set_MO5_palette(T_Components * palette);
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/**
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* Set TO7/70 Palette.
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*
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* The 8 first colors are the TO7 palette
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*/
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void MOTO_set_TO7_palette(T_Components * palette);
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/** @}*/
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/** @defgroup apple2 Apple II
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*
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* HGR and DHGR modes
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* @{
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*/
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/**
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* Set the 6 color Apple II HGR palette
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*/
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void HGR_set_palette(T_Components * palette);
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/**
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* Set the 16 color Apple II DHGR palette
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*/
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void DHGR_set_palette(T_Components * palette);
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/** @}*/
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