Amstrad CPC

Functions
unsigned char *	raw2crtc (T_IO_Context *context, unsigned char mode, unsigned char r9, unsigned long *outSize, unsigned char *r1, unsigned char r12, unsigned char r13)
void	CPC_set_HW_palette (T_Components *palette)
	Set 32 color HW Amstrad CPC palette. More...
int	CPC_is_CPC_old_color (T_Components *col)
	Check if the color is likely to be a CPC RGB tri level color. More...
void	CPC_set_default_BASIC_palette (T_Components *palette)
	Set 16 color default Amstrad CPC BASIC palette. More...
int	CPC_compare_colors (T_Components *col1, T_Components *col2)
	compare two RGB colors More...
byte	CPC_Firmware_to_Hardware_color (byte fw_color)
	Convert CPC firmware color to hardware color (Gate Array) More...
int	CPC_check_AMSDOS (FILE *file, word *loading_address, word *exec_address, unsigned long *file_length)
	Check AMSDOS header. More...
int	CPC_write_AMSDOS_header (FILE *file, const char *filename, const char *ext, byte type, word load_address, word save_address, word file_length)
	Write AMSDOS header. More...

Detailed Description

Function Documentation

raw2crtc()

unsigned char * raw2crtc	(	T_IO_Context *	context,
		unsigned char	mode,
		unsigned char	r9,
		unsigned long *	outSize,
		unsigned char *	r1,
		unsigned char	r12,
		unsigned char	r13
	)

References addrCalc(), GFX2_DEBUG, GFX2_ERROR, GFX2_Log(), GFX2_malloc, T_IO_Context::Height, mode, mode0interlace(), mode1interlace(), mode2interlace(), mode3interlace(), NULL, and T_IO_Context::Width.

Referenced by Save_GOS(), and Save_SCR().

CPC_set_HW_palette()

void CPC_set_HW_palette

(

T_Components *

palette

)

Set 32 color HW Amstrad CPC palette.

The palette is in fact 27 colors, with some duplicates. http://www.cpcwiki.eu/index.php/CPC_Palette

References CPC_Hw_Palette.

Referenced by Button_Constraint_menu(), Load_CM5(), Load_GOS(), Load_SCR(), and Save_SCR().

CPC_is_CPC_old_color()

int CPC_is_CPC_old_color

(

T_Components *

col

)

Check if the color is likely to be a CPC RGB tri level color.

References T_Components::B, T_Components::G, and T_Components::R.

Referenced by Save_SCR().

CPC_set_default_BASIC_palette()

void CPC_set_default_BASIC_palette

(

T_Components *

palette

)

Set 16 color default Amstrad CPC BASIC palette.

Note

INK 14 and 15 are blinking on the real hardware.

in the default CPC Basic palette, INKs 14 and 15 are blinking, so that would be great to include theses in the colorcycling, but I don't see any way to make these blinking colors with the way GrafX2 handles color cycling

References CPC_Hw_Palette.

Referenced by Button_Constraint_menu().

CPC_compare_colors()

int CPC_compare_colors	(	T_Components *	col1,
		T_Components *	col2
	)

compare two RGB colors

The RGB colors are compared in order as if they were converted from CPC (27 color palette), as there are several mapping of the 3 level CPC RGB signals.

Returns

true if the RGB colors map to the same CPC color

The mapping used in this function is :

• RGB value [0: 85] => CPC level 0
• RGB value [86:171] => CPC level 1
• RGB value [172:255] => CPC level 2

References T_Components::B, T_Components::G, and T_Components::R.

Referenced by Save_SCR(), and Test_CPC_compare_colors().

CPC_Firmware_to_Hardware_color()

byte CPC_Firmware_to_Hardware_color

(

byte

fw_color

)

Convert CPC firmware color to hardware color (Gate Array)

Parameters

fw_color

a CPC Firmware color index (from 0 to 26)

Returns

a CPC Hardware color (from 0x40 to 0x5f)

References CPC_Firmware_Colors.

Referenced by Load_SCR().

CPC_check_AMSDOS()

int CPC_check_AMSDOS	(	FILE *	file,
		word *	loading_address,
		word *	exec_address,
		unsigned long *	file_length
	)

Check AMSDOS header.

see http://www.cpcwiki.eu/index.php/AMSDOS_Header

Parameters

[in]	file	an open file
[out]	loading_address	the loading address from the header
[out]	exec_address	the execution address from the header
[out]	file_length	the file length written in the header

Returns

0 if the file does not contain a valid AMSDOS header

1 if it does.

References GFX2_DEBUG, GFX2_INFO, GFX2_Log(), and Read_bytes().

Referenced by Load_CM5(), Load_GOS(), Load_SCR(), Test_CM5(), Test_GOS(), and Test_SCR().

CPC_write_AMSDOS_header()

int CPC_write_AMSDOS_header	(	FILE *	file,
		const char *	filename,
		const char *	ext,
		byte	type,
		word	load_address,
		word	save_address,
		word	file_length
	)

Write AMSDOS header.

References GFX2_DEBUG, GFX2_LogHexDump(), and Write_bytes().

Referenced by Save_SCR().