#include "../ugbc.h"
#include <math.h>

Macros
#define	CGA_REG_HZ_TOTAL 0x00
#define	CGA_REG_HZ_DISP 0x01
#define	CGA_REG_HZ_SYNC_POS 0x02
#define	CGA_REG_HZ_SYNC_WIDTH 0x03
#define	CGA_REG_VT_TOTAL 0x04
#define	CGA_REG_VT_TOTAL_ADJUST 0x05
#define	CGA_REG_VT_VERT_TOTAL_ADJUST 0x06
#define	CGA_REG_VT_VERT_SYNC_POSITION 0x07
#define	CGA_REG_INTERLACE_MODE 0x08
#define	CGA_REG_MAX_SCAN_LINE_ADDRESS 0x09
#define	CGA_REG_CURSOR_START 0x0a
#define	CGA_REG_CURSOR_END 0x0b
#define	CGA_REG_START_ADDRESS_H 0x0c
#define	CGA_REG_START_ADDRESS_L 0x0d
#define	CGA_REG_CURSOR_ADDRESS_H 0x0e
#define	CGA_REG_CURSOR_ADDRESS_L 0x0f
#define	CGA_REG_LPEN_ADDRESS_H 0x10
#define	CGA_REG_LPEN_ADDRESS_L 0x11
#define	WRITE_REGISTER(r, v)
#define	CGA_COLOR_BLUE 0x01
#define	CGA_COLOR_GREEN 0x02
#define	CGA_COLOR_RED 0x04
#define	CGA_COLOR_LIGHT 0x08
#define	CGA_COLOR_LIGHT2 0x10
#define	CGA_COLOR_CSET1 0x00
#define	CGA_COLOR_CSET2 0x20
#define	WRITE_COLOR_SELECT_REGISTER(v)
#define	CGA_MODE_80x25 0x01
#define	CGA_MODE_40x25 0x00
#define	CGA_MODE_GRAPHIC 0x02
#define	CGA_MODE_TEXT 0x00
#define	CGA_MODE_BW 0x04
#define	CGA_MODE_COLOR 0x00
#define	CGA_MODE_ENABLE 0x08
#define	CGA_MODE_DISABLE 0x00
#define	CGA_MODE_HIRES 0x10
#define	CGA_MODE_LORES 0x00
#define	CGA_MODE_BLINK 0x20
#define	CGA_MODE_NOBLINK 0x00
#define	WRITE_MODE_CONTROL_REGISTER(v)
#define	BIOS_VIDEO_MODE(m)

Functions
RGBi *	CGA_image_nearest_system_color (RGBi *_color)
Variable *	cga_collision (Environment _environment, char _sprite)
void	cga_hit (Environment _environment, char _sprite_mask, char *_result)
	CGA: emit code to check for collision
void	cga_border_color (Environment _environment, char _border_color)
	CGA: emit code to change border color
void	cga_background_color (Environment *_environment, int _index, int _background_color)
	CGA: emit code to change background color
void	cga_background_color_vars (Environment _environment, char _index, char *_background_color)
	CGA: emit code to change background color
void	cga_background_color_semivars (Environment _environment, int _index, char _background_color)
	CGA: emit code to change background color
void	cga_background_color_get_vars (Environment _environment, char _index, char *_background_color)
	CGA: emit code to retrieve background color
void	cga_sprite_common_color (Environment _environment, char _index, char *_common_color)
	CGA: emit code to change common sprite's color
void	cga_raster_at (Environment _environment, char _label, char _positionlo, char _positionhi)
	CGA: emit code to set raster irq
void	cga_next_raster (Environment *_environment)
	CGA: emit code to wait for next raster irq
void	cga_next_raster_at (Environment _environment, char _label, char _positionlo, char _positionhi)
	CGA: emit code to wait for next raster irq at different position
void	cga_bank_select (Environment *_environment, int _bank)
int	cga_screen_mode_enable (Environment _environment, ScreenMode _screen_mode)
void	console_calculate (Environment *_environment)
void	console_calculate_vars (Environment *_environment)
void	cga_bitmap_enable (Environment *_environment, int _width, int _height, int _colors)
void	cga_bitmap_disable (Environment *_environment)
void	cga_tilemap_enable (Environment *_environment, int _width, int _height, int _colors, int _tile_width, int _tile_height)
void	cga_bitmap_at (Environment _environment, char _address)
void	cga_colormap_at (Environment _environment, char _address)
void	cga_textmap_at (Environment _environment, char _address)
void	cga_pset_int (Environment _environment, int _x, int _y, int _c)
void	cga_pset_vars (Environment _environment, char _x, char _y, char _c)
void	cga_pget_color_vars (Environment _environment, char _x, char _y, char _result)
void	cga_screen_on (Environment *_environment)
void	cga_screen_off (Environment *_environment)
void	cga_screen_rows (Environment _environment, char _rows)
void	cga_screen_columns (Environment _environment, char _columns)
void	cga_sprite_data_set (Environment _environment, char _sprite, char *_address)
void	cga_sprite_data_from (Environment _environment, char _sprite, char *_image)
void	cga_sprite_enable (Environment _environment, char _sprite)
void	cga_sprite_disable (Environment _environment, char _sprite)
void	cga_sprite_at (Environment _environment, char _sprite, char _x, char _y)
void	cga_sprite_expand_vertical (Environment _environment, char _sprite)
void	cga_sprite_expand_horizontal (Environment _environment, char _sprite)
void	cga_sprite_compress_vertical (Environment _environment, char _sprite)
void	cga_sprite_compress_horizontal (Environment _environment, char _sprite)
void	cga_sprite_multicolor (Environment _environment, char _sprite)
void	cga_sprite_monocolor (Environment _environment, char _sprite)
void	cga_sprite_color (Environment _environment, char _sprite, char *_color)
void	cga_sprite_priority (Environment _environment, char _sprite, char *_priority)
void	cga_tiles_at (Environment _environment, char _address)
void	cga_vertical_scroll (Environment _environment, char _displacement)
void	cga_horizontal_scroll (Environment _environment, char _displacement)
void	cga_busy_wait (Environment _environment, char _timing)
void	cga_get_width (Environment _environment, char _result)
void	cga_tiles_get (Environment _environment, char _result)
void	cga_get_height (Environment _environment, char _result)
void	cga_cls (Environment *_environment)
void	cga_cls_box (Environment _environment, char _x1, char _y1, char _w, char *_h)
void	cga_scroll_text (Environment *_environment, int _direction, int _overlap)
void	cga_text (Environment _environment, char _text, char *_text_size, int _raw)
void	cga_initialization (Environment *_environment)
void	cga_finalization (Environment *_environment)
void	cga_hscroll_line (Environment *_environment, int _direction, int _overlap)
void	cga_hscroll_screen (Environment *_environment, int _direction, int _overlap)
void	cga_back (Environment *_environment)
void	cga_cline (Environment _environment, char _characters)
int	cga_image_size (Environment *_environment, int _width, int _height, int _mode)
Variable *	cga_sprite_converter (Environment _environment, char _source, int _width, int _height, int _depth, RGBi *_color, int _slot_x, int _slot_y)
Variable *	cga_image_converter (Environment _environment, char _data, int _width, int _height, int _depth, int _offset_x, int _offset_y, int _frame_width, int _frame_height, int _mode, int _transparent_color, int _flags)
void	cga_blit_image (Environment _environment, char _sources[], int _source_count, char _blit, char _x, char _y, char _frame, char *_sequence, int _frame_size, int _frame_count, int _flags)
void	cga_put_image (Environment _environment, Resource _image, char _x, char _y, char _frame, char _sequence, int _frame_size, int _frame_count, char *_flags)
void	cga_wait_vbl (Environment *_environment)
Variable *	cga_new_image (Environment *_environment, int _width, int _height, int _mode)
Variable *	cga_new_images (Environment *_environment, int _frames, int _width, int _height, int _mode)
Variable *	cga_new_sequence (Environment *_environment, int _sequences, int _frames, int _width, int _height, int _mode)
void	cga_get_image (Environment _environment, char _image, char _x, char _y, char _frame, char _sequence, int _frame_size, int _frame_count, int _palette)
void	cga_scroll (Environment *_environment, int _dx, int _dy)
void	cga_put_tile (Environment _environment, char _tile, char _x, char _y)
void	cga_move_tiles (Environment _environment, char _tile, char _x, char _y)
void	cga_put_tiles (Environment _environment, char _tile, char _x, char _y, char _w, char _h)
void	cga_tile_at (Environment _environment, char _x, char _y, char _result)
void	cga_use_tileset (Environment _environment, char _tileset)
Variable *	cga_get_raster_line (Environment *_environment)
void	cga_move_memory_video (Environment _environment, char _from, char _to, char _size)
void	cga_move_video_memory (Environment _environment, char _from, char _to, char _size)
void	cga_colors_vars (Environment _environment, char _foreground_color, char *_background_color)
void	cga_slice_image (Environment _environment, char _image, char _frame, char _sequence, int _frame_size, int _frame_count, char *_destination)
void	cga_slice_image_copy (Environment _environment, char _image, char _frame, char _sequence, int _frame_size, int _frame_count, char *_destination)
void	cga_slice_image_extract (Environment _environment, char _image, char _frame, char _sequence, int _frame_size, int _frame_count, char *_destination)
int	cga_palette_extract (Environment _environment, char _data, int _width, int _height, int _depth, int _flags, RGBi *_palette)
void	cga_calculate_sequence_frame_offset (Environment _environment, char _offset, char _sequence, char _frame, int _frame_size, int _frame_count)
void	cga_flip_image (Environment _environment, Resource _image, char _frame, char _sequence, int _frame_size, int _frame_count, char *_direction)
void	cga_screen (Environment _environment, char _x, char _y, char _c)

Variables
int	lastUsedSlotInCommonPalette = 0

Macro Definition Documentation

◆ BIOS_VIDEO_MODE

#define BIOS_VIDEO_MODE ( m )

Value:

outline1("MOV AX, 0x%4.4x", m ) \

outline0("INT 0x10")

outline1

#define outline1(s, a)

Definition ugbc.h:4253

Definition at line 143 of file cga.c.

◆ CGA_COLOR_BLUE

#define CGA_COLOR_BLUE 0x01

Definition at line 109 of file cga.c.

◆ CGA_COLOR_CSET1

#define CGA_COLOR_CSET1 0x00

Definition at line 114 of file cga.c.

◆ CGA_COLOR_CSET2

#define CGA_COLOR_CSET2 0x20

Definition at line 115 of file cga.c.

◆ CGA_COLOR_GREEN

#define CGA_COLOR_GREEN 0x02

Definition at line 110 of file cga.c.

◆ CGA_COLOR_LIGHT

#define CGA_COLOR_LIGHT 0x08

Definition at line 112 of file cga.c.

◆ CGA_COLOR_LIGHT2

#define CGA_COLOR_LIGHT2 0x10

Definition at line 113 of file cga.c.

◆ CGA_COLOR_RED

#define CGA_COLOR_RED 0x04

Definition at line 111 of file cga.c.

◆ CGA_MODE_40x25

#define CGA_MODE_40x25 0x00

Definition at line 122 of file cga.c.

◆ CGA_MODE_80x25

#define CGA_MODE_80x25 0x01

Definition at line 121 of file cga.c.

◆ CGA_MODE_BLINK

#define CGA_MODE_BLINK 0x20

Definition at line 136 of file cga.c.

◆ CGA_MODE_BW

#define CGA_MODE_BW 0x04

Definition at line 127 of file cga.c.

◆ CGA_MODE_COLOR

#define CGA_MODE_COLOR 0x00

Definition at line 128 of file cga.c.

◆ CGA_MODE_DISABLE

#define CGA_MODE_DISABLE 0x00

Definition at line 131 of file cga.c.

◆ CGA_MODE_ENABLE

#define CGA_MODE_ENABLE 0x08

Definition at line 130 of file cga.c.

◆ CGA_MODE_GRAPHIC

#define CGA_MODE_GRAPHIC 0x02

Definition at line 124 of file cga.c.

◆ CGA_MODE_HIRES

#define CGA_MODE_HIRES 0x10

Definition at line 133 of file cga.c.

◆ CGA_MODE_LORES

#define CGA_MODE_LORES 0x00

Definition at line 134 of file cga.c.

◆ CGA_MODE_NOBLINK

#define CGA_MODE_NOBLINK 0x00

Definition at line 137 of file cga.c.

◆ CGA_MODE_TEXT

#define CGA_MODE_TEXT 0x00

Definition at line 125 of file cga.c.

◆ CGA_REG_CURSOR_ADDRESS_H

#define CGA_REG_CURSOR_ADDRESS_H 0x0e

Definition at line 99 of file cga.c.

◆ CGA_REG_CURSOR_ADDRESS_L

#define CGA_REG_CURSOR_ADDRESS_L 0x0f

Definition at line 100 of file cga.c.

◆ CGA_REG_CURSOR_END

#define CGA_REG_CURSOR_END 0x0b

Definition at line 96 of file cga.c.

◆ CGA_REG_CURSOR_START

#define CGA_REG_CURSOR_START 0x0a

Definition at line 95 of file cga.c.

◆ CGA_REG_HZ_DISP

#define CGA_REG_HZ_DISP 0x01

Definition at line 86 of file cga.c.

◆ CGA_REG_HZ_SYNC_POS

#define CGA_REG_HZ_SYNC_POS 0x02

Definition at line 87 of file cga.c.

◆ CGA_REG_HZ_SYNC_WIDTH

#define CGA_REG_HZ_SYNC_WIDTH 0x03

Definition at line 88 of file cga.c.

◆ CGA_REG_HZ_TOTAL

#define CGA_REG_HZ_TOTAL 0x00

Definition at line 85 of file cga.c.

◆ CGA_REG_INTERLACE_MODE

#define CGA_REG_INTERLACE_MODE 0x08

Definition at line 93 of file cga.c.

◆ CGA_REG_LPEN_ADDRESS_H

#define CGA_REG_LPEN_ADDRESS_H 0x10

Definition at line 101 of file cga.c.

◆ CGA_REG_LPEN_ADDRESS_L

#define CGA_REG_LPEN_ADDRESS_L 0x11

Definition at line 102 of file cga.c.

◆ CGA_REG_MAX_SCAN_LINE_ADDRESS

#define CGA_REG_MAX_SCAN_LINE_ADDRESS 0x09

Definition at line 94 of file cga.c.

◆ CGA_REG_START_ADDRESS_H

#define CGA_REG_START_ADDRESS_H 0x0c

Definition at line 97 of file cga.c.

◆ CGA_REG_START_ADDRESS_L

#define CGA_REG_START_ADDRESS_L 0x0d

Definition at line 98 of file cga.c.

◆ CGA_REG_VT_TOTAL

#define CGA_REG_VT_TOTAL 0x04

Definition at line 89 of file cga.c.

◆ CGA_REG_VT_TOTAL_ADJUST

#define CGA_REG_VT_TOTAL_ADJUST 0x05

Definition at line 90 of file cga.c.

◆ CGA_REG_VT_VERT_SYNC_POSITION

#define CGA_REG_VT_VERT_SYNC_POSITION 0x07

Definition at line 92 of file cga.c.

◆ CGA_REG_VT_VERT_TOTAL_ADJUST

#define CGA_REG_VT_VERT_TOTAL_ADJUST 0x06

Definition at line 91 of file cga.c.

◆ WRITE_COLOR_SELECT_REGISTER

#define WRITE_COLOR_SELECT_REGISTER ( v )

Value:

outline1("MOV AL, 0x%2.2x", v ) \

outline0("CALL WRITECGACOLORSELECTREG")

Definition at line 117 of file cga.c.

◆ WRITE_MODE_CONTROL_REGISTER

#define WRITE_MODE_CONTROL_REGISTER ( v )

Value:

outline1("MOV AL, 0x%2.2x", v ) \

outline0("CALL WRITECGAMODECONTROLREG")

Definition at line 139 of file cga.c.

◆ WRITE_REGISTER

#define WRITE_REGISTER	(		r,
			v )

Value:

outline1("MOV AH, 0x%2.2x", r ) \
outline1("MOV AL, 0x%2.2x", v ) \
outline0("CALL WRITECGAREG")

Definition at line 104 of file cga.c.

Function Documentation

◆ cga_back()

void cga_back ( Environment * _environment )

Definition at line 1300 of file cga.c.

◆ cga_background_color()

void cga_background_color	(	Environment *	_environment,
		int	_index,
		int	_background_color )

CGA: emit code to change background color

This function can be used to issue code aimed at changing the background color of the screen.

Parameters

_environment	Current calling environment
_index	Index of the background color
_background_color	Background color to use

Definition at line 227 of file cga.c.

◆ cga_background_color_get_vars()

void cga_background_color_get_vars	(	Environment *	_environment,
		char *	_index,
		char *	_background_color )

CGA: emit code to retrieve background color

This function can be used to issue code aimed at retrieving the background color of the screen.

Parameters

_environment	Current calling environment
_index	Index of the background color
_background_color	Background color to use

Definition at line 289 of file cga.c.

◆ cga_background_color_semivars()

void cga_background_color_semivars	(	Environment *	_environment,
		int	_index,
		char *	_background_color )

CGA: emit code to change background color

This function can be used to issue code aimed at changing the background color of the screen.

Parameters

_environment	Current calling environment
_index	Index of the background color
_background_color	Background color to use

Definition at line 268 of file cga.c.

◆ cga_background_color_vars()

void cga_background_color_vars	(	Environment *	_environment,
		char *	_index,
		char *	_background_color )

CGA: emit code to change background color

This function can be used to issue code aimed at changing the background color of the screen.

Parameters

_environment	Current calling environment
_index	Index of the background color
_background_color	Background color to use

Definition at line 247 of file cga.c.

◆ cga_bank_select()

void cga_bank_select	(	Environment *	_environment,
		int	_bank )

Definition at line 361 of file cga.c.

◆ cga_bitmap_at()

void cga_bitmap_at	(	Environment *	_environment,
		char *	_address )

Definition at line 830 of file cga.c.

◆ cga_bitmap_disable()

void cga_bitmap_disable ( Environment * _environment )

Definition at line 799 of file cga.c.

◆ cga_bitmap_enable()

void cga_bitmap_enable	(	Environment *	_environment,
		int	_width,
		int	_height,
		int	_colors )

Definition at line 776 of file cga.c.

◆ cga_blit_image()

void cga_blit_image	(	Environment *	_environment,
		char *	_sources[],
		int	_source_count,
		char *	_blit,
		char *	_x,
		char *	_y,
		char *	_frame,
		char *	_sequence,
		int	_frame_size,
		int	_frame_count,
		int	_flags )

Definition at line 1541 of file cga.c.

◆ cga_border_color()

void cga_border_color	(	Environment *	_environment,
		char *	_border_color )

CGA: emit code to change border color

This function can be used to issue code aimed at changing the border color of the screen.

Parameters

_environment	Current calling environment
_border_color	Border color to use

Definition at line 206 of file cga.c.

◆ cga_busy_wait()

void cga_busy_wait	(	Environment *	_environment,
		char *	_timing )

Definition at line 995 of file cga.c.

◆ cga_calculate_sequence_frame_offset()

void cga_calculate_sequence_frame_offset	(	Environment *	_environment,
		char *	_offset,
		char *	_sequence,
		char *	_frame,
		int	_frame_size,
		int	_frame_count )

Definition at line 1716 of file cga.c.

◆ cga_cline()

void cga_cline	(	Environment *	_environment,
		char *	_characters )

Definition at line 1304 of file cga.c.

◆ cga_cls()

void cga_cls ( Environment * _environment )

Definition at line 1011 of file cga.c.

◆ cga_cls_box()

void cga_cls_box	(	Environment *	_environment,
		char *	_x1,
		char *	_y1,
		char *	_w,
		char *	_h )

Definition at line 1022 of file cga.c.

◆ cga_collision()

Variable * cga_collision	(	Environment *	_environment,
		char *	_sprite )

Definition at line 174 of file cga.c.

◆ cga_colormap_at()

void cga_colormap_at	(	Environment *	_environment,
		char *	_address )

Definition at line 834 of file cga.c.

◆ cga_colors_vars()

void cga_colors_vars	(	Environment *	_environment,
		char *	_foreground_color,
		char *	_background_color )

Definition at line 1686 of file cga.c.

◆ cga_finalization()

void cga_finalization ( Environment * _environment )

Definition at line 1275 of file cga.c.

◆ cga_flip_image()

void cga_flip_image	(	Environment *	_environment,
		Resource *	_image,
		char *	_frame,
		char *	_sequence,
		int	_frame_size,
		int	_frame_count,
		char *	_direction )

Definition at line 1720 of file cga.c.

◆ cga_get_height()

void cga_get_height	(	Environment *	_environment,
		char *	_result )

Definition at line 1007 of file cga.c.

◆ cga_get_image()

void cga_get_image	(	Environment *	_environment,
		char *	_image,
		char *	_x,
		char *	_y,
		char *	_frame,
		char *	_sequence,
		int	_frame_size,
		int	_frame_count,
		int	_palette )

Definition at line 1640 of file cga.c.

◆ cga_get_raster_line()

Variable * cga_get_raster_line ( Environment * _environment )

Definition at line 1668 of file cga.c.

◆ cga_get_width()

void cga_get_width	(	Environment *	_environment,
		char *	_result )

Definition at line 999 of file cga.c.

◆ cga_hit()

void cga_hit	(	Environment *	_environment,
		char *	_sprite_mask,
		char *	_result )

CGA: emit code to check for collision

This function can be used to issue code aimed at verifying if a sprite has had a collision with a tile. The result (0 = no collision, 0xff = collision occurred) is returned in the output variable.

Parameters

_environment Current calling environment

_sprite_mask Sprite mask to use

_result Where to store the result

Definition at line 193 of file cga.c.

◆ cga_horizontal_scroll()

void cga_horizontal_scroll	(	Environment *	_environment,
		char *	_displacement )

Definition at line 991 of file cga.c.

◆ cga_hscroll_line()

void cga_hscroll_line	(	Environment *	_environment,
		int	_direction,
		int	_overlap )

Definition at line 1292 of file cga.c.

◆ cga_hscroll_screen()

void cga_hscroll_screen	(	Environment *	_environment,
		int	_direction,
		int	_overlap )

Definition at line 1296 of file cga.c.

◆ cga_image_converter()

Variable * cga_image_converter	(	Environment *	_environment,
		char *	_data,
		int	_width,
		int	_height,
		int	_depth,
		int	_offset_x,
		int	_offset_y,
		int	_frame_width,
		int	_frame_height,
		int	_mode,
		int	_transparent_color,
		int	_flags )

Definition at line 1515 of file cga.c.

◆ CGA_image_nearest_system_color()

RGBi * CGA_image_nearest_system_color ( RGBi * _color )

Definition at line 147 of file cga.c.

◆ cga_image_size()

int cga_image_size	(	Environment *	_environment,
		int	_width,
		int	_height,
		int	_mode )

Definition at line 1308 of file cga.c.

◆ cga_initialization()

void cga_initialization ( Environment * _environment )

Definition at line 1091 of file cga.c.

◆ cga_move_memory_video()

void cga_move_memory_video	(	Environment *	_environment,
		char *	_from,
		char *	_to,
		char *	_size )

Definition at line 1678 of file cga.c.

◆ cga_move_tiles()

void cga_move_tiles	(	Environment *	_environment,
		char *	_tile,
		char *	_x,
		char *	_y )

Definition at line 1652 of file cga.c.

◆ cga_move_video_memory()

void cga_move_video_memory	(	Environment *	_environment,
		char *	_from,
		char *	_to,
		char *	_size )

Definition at line 1682 of file cga.c.

◆ cga_new_image()

Variable * cga_new_image	(	Environment *	_environment,
		int	_width,
		int	_height,
		int	_mode )

Definition at line 1553 of file cga.c.

◆ cga_new_images()

Variable * cga_new_images	(	Environment *	_environment,
		int	_frames,
		int	_width,
		int	_height,
		int	_mode )

Definition at line 1577 of file cga.c.

◆ cga_new_sequence()

Variable * cga_new_sequence	(	Environment *	_environment,
		int	_sequences,
		int	_frames,
		int	_width,
		int	_height,
		int	_mode )

Definition at line 1608 of file cga.c.

◆ cga_next_raster()

void cga_next_raster ( Environment * _environment )

CGA: emit code to wait for next raster irq

This function outputs assembly code needed to wait for the next raster. Meanwhile, the execution of the main code will resume where it left off.

Parameters

_environment Current calling environment

Definition at line 340 of file cga.c.

◆ cga_next_raster_at()

void cga_next_raster_at	(	Environment *	_environment,
		char *	_label,
		char *	_positionlo,
		char *	_positionhi )

CGA: emit code to wait for next raster irq at different position

This function outputs assembly code needed to wait for the next raster on a different position with a different code to execute. Meanwhile, the execution of the main code will resume where it left off.

Parameters

_environment	Current calling environment
_label	Label to jump to when vertical raster reach the value given
_positionlo	The vertical position to wait for (bits 7..0)
_positionhi	The vertical position to wait for (bit 8)

Definition at line 357 of file cga.c.

◆ cga_palette_extract()

int cga_palette_extract	(	Environment *	_environment,
		char *	_data,
		int	_width,
		int	_height,
		int	_depth,
		int	_flags,
		RGBi *	_palette )

Definition at line 1702 of file cga.c.

◆ cga_pget_color_vars()

void cga_pget_color_vars	(	Environment *	_environment,
		char *	_x,
		char *	_y,
		char *	_result )

Definition at line 889 of file cga.c.

◆ cga_pset_int()

void cga_pset_int	(	Environment *	_environment,
		int	_x,
		int	_y,
		int *	_c )

Definition at line 842 of file cga.c.

◆ cga_pset_vars()

void cga_pset_vars	(	Environment *	_environment,
		char *	_x,
		char *	_y,
		char *	_c )

Definition at line 863 of file cga.c.

◆ cga_put_image()

void cga_put_image	(	Environment *	_environment,
		Resource *	_image,
		char *	_x,
		char *	_y,
		char *	_frame,
		char *	_sequence,
		int	_frame_size,
		int	_frame_count,
		char *	_flags )

Definition at line 1545 of file cga.c.

◆ cga_put_tile()

void cga_put_tile	(	Environment *	_environment,
		char *	_tile,
		char *	_x,
		char *	_y )

Definition at line 1648 of file cga.c.

◆ cga_put_tiles()

void cga_put_tiles	(	Environment *	_environment,
		char *	_tile,
		char *	_x,
		char *	_y,
		char *	_w,
		char *	_h )

Definition at line 1656 of file cga.c.

◆ cga_raster_at()

void cga_raster_at	(	Environment *	_environment,
		char *	_label,
		char *	_positionlo,
		char *	_positionhi )

CGA: emit code to set raster irq

This function outputs assembly code needed to initialize a raster routine. In other words, asynchronously and in parallel with the execution of the main program, the routine starting from the label provided will be executed when the vertical brush on the screen reaches the value of _position. This function is particularly useful when the position is communicated is given as an integer.

Parameters

_environment	Current calling environment
_label	Label to jump to when vertical raster reach the value given
_positionlo	The vertical position to wait for (bits 7..0)
_positionhi	The vertical position to wait for (bit 8)

Definition at line 326 of file cga.c.

◆ cga_screen()

void cga_screen	(	Environment *	_environment,
		char *	_x,
		char *	_y,
		char *	_c )

Definition at line 1724 of file cga.c.

◆ cga_screen_columns()

void cga_screen_columns	(	Environment *	_environment,
		char *	_columns )

Definition at line 927 of file cga.c.

◆ cga_screen_mode_enable()

int cga_screen_mode_enable	(	Environment *	_environment,
		ScreenMode *	_screen_mode )

Definition at line 365 of file cga.c.

◆ cga_screen_off()

void cga_screen_off ( Environment * _environment )

Definition at line 915 of file cga.c.

◆ cga_screen_on()

void cga_screen_on ( Environment * _environment )

Definition at line 907 of file cga.c.

◆ cga_screen_rows()

void cga_screen_rows	(	Environment *	_environment,
		char *	_rows )

Definition at line 923 of file cga.c.

◆ cga_scroll()

void cga_scroll	(	Environment *	_environment,
		int	_dx,
		int	_dy )

Definition at line 1644 of file cga.c.

◆ cga_scroll_text()

void cga_scroll_text	(	Environment *	_environment,
		int	_direction,
		int	_overlap )

Definition at line 1026 of file cga.c.

◆ cga_slice_image()

void cga_slice_image	(	Environment *	_environment,
		char *	_image,
		char *	_frame,
		char *	_sequence,
		int	_frame_size,
		int	_frame_count,
		char *	_destination )

Definition at line 1690 of file cga.c.

◆ cga_slice_image_copy()

void cga_slice_image_copy	(	Environment *	_environment,
		char *	_image,
		char *	_frame,
		char *	_sequence,
		int	_frame_size,
		int	_frame_count,
		char *	_destination )

Definition at line 1694 of file cga.c.

◆ cga_slice_image_extract()

void cga_slice_image_extract	(	Environment *	_environment,
		char *	_image,
		char *	_frame,
		char *	_sequence,
		int	_frame_size,
		int	_frame_count,
		char *	_destination )

Definition at line 1698 of file cga.c.

◆ cga_sprite_at()

void cga_sprite_at	(	Environment *	_environment,
		char *	_sprite,
		char *	_x,
		char *	_y )

Definition at line 947 of file cga.c.

◆ cga_sprite_color()

void cga_sprite_color	(	Environment *	_environment,
		char *	_sprite,
		char *	_color )

Definition at line 975 of file cga.c.

◆ cga_sprite_common_color()

void cga_sprite_common_color	(	Environment *	_environment,
		char *	_index,
		char *	_common_color )

CGA: emit code to change common sprite's color

This function can be used to issue code aimed at changing the common color of the sprites.

Parameters

_environment	Current calling environment
_index	Index of the background color
_common_color	Index of the color to use

Definition at line 307 of file cga.c.

◆ cga_sprite_compress_horizontal()

void cga_sprite_compress_horizontal	(	Environment *	_environment,
		char *	_sprite )

Definition at line 963 of file cga.c.

◆ cga_sprite_compress_vertical()

void cga_sprite_compress_vertical	(	Environment *	_environment,
		char *	_sprite )

Definition at line 959 of file cga.c.

◆ cga_sprite_converter()

Variable * cga_sprite_converter	(	Environment *	_environment,
		char *	_source,
		int	_width,
		int	_height,
		int	_depth,
		RGBi *	_color,
		int	_slot_x,
		int	_slot_y )

Definition at line 1370 of file cga.c.

◆ cga_sprite_data_from()

void cga_sprite_data_from	(	Environment *	_environment,
		char *	_sprite,
		char *	_image )

Definition at line 935 of file cga.c.

◆ cga_sprite_data_set()

void cga_sprite_data_set	(	Environment *	_environment,
		char *	_sprite,
		char *	_address )

Definition at line 931 of file cga.c.

◆ cga_sprite_disable()

void cga_sprite_disable	(	Environment *	_environment,
		char *	_sprite )

Definition at line 943 of file cga.c.

◆ cga_sprite_enable()

void cga_sprite_enable	(	Environment *	_environment,
		char *	_sprite )

Definition at line 939 of file cga.c.

◆ cga_sprite_expand_horizontal()

void cga_sprite_expand_horizontal	(	Environment *	_environment,
		char *	_sprite )

Definition at line 955 of file cga.c.

◆ cga_sprite_expand_vertical()

void cga_sprite_expand_vertical	(	Environment *	_environment,
		char *	_sprite )

Definition at line 951 of file cga.c.

◆ cga_sprite_monocolor()

void cga_sprite_monocolor	(	Environment *	_environment,
		char *	_sprite )

Definition at line 971 of file cga.c.

◆ cga_sprite_multicolor()

void cga_sprite_multicolor	(	Environment *	_environment,
		char *	_sprite )

Definition at line 967 of file cga.c.

◆ cga_sprite_priority()

void cga_sprite_priority	(	Environment *	_environment,
		char *	_sprite,
		char *	_priority )

Definition at line 979 of file cga.c.

◆ cga_text()

void cga_text	(	Environment *	_environment,
		char *	_text,
		char *	_text_size,
		int	_raw )

Definition at line 1038 of file cga.c.

◆ cga_textmap_at()

void cga_textmap_at	(	Environment *	_environment,
		char *	_address )

Definition at line 838 of file cga.c.

◆ cga_tile_at()

void cga_tile_at	(	Environment *	_environment,
		char *	_x,
		char *	_y,
		char *	_result )

Definition at line 1660 of file cga.c.

◆ cga_tilemap_enable()

void cga_tilemap_enable	(	Environment *	_environment,
		int	_width,
		int	_height,
		int	_colors,
		int	_tile_width,
		int	_tile_height )

Definition at line 803 of file cga.c.

◆ cga_tiles_at()

void cga_tiles_at	(	Environment *	_environment,
		char *	_address )

Definition at line 983 of file cga.c.

◆ cga_tiles_get()

void cga_tiles_get	(	Environment *	_environment,
		char *	_result )

Definition at line 1003 of file cga.c.

◆ cga_use_tileset()

void cga_use_tileset	(	Environment *	_environment,
		char *	_tileset )

Definition at line 1664 of file cga.c.

◆ cga_vertical_scroll()

void cga_vertical_scroll	(	Environment *	_environment,
		char *	_displacement )

Definition at line 987 of file cga.c.

◆ cga_wait_vbl()

void cga_wait_vbl ( Environment * _environment )

Definition at line 1549 of file cga.c.

◆ console_calculate()

void console_calculate ( Environment * _environment )

Definition at line 754 of file cga.c.

◆ console_calculate_vars()

void console_calculate_vars ( Environment * _environment )

Definition at line 768 of file cga.c.

Variable Documentation

◆ lastUsedSlotInCommonPalette

int lastUsedSlotInCommonPalette = 0

Definition at line 79 of file cga.c.

_environment	Current calling environment
_sprite_mask	Sprite mask to use
_result	Where to store the result

Macros

Functions

Variables

Macro Definition Documentation

◆ BIOS_VIDEO_MODE

◆ CGA_COLOR_BLUE

◆ CGA_COLOR_CSET1

◆ CGA_COLOR_CSET2

◆ CGA_COLOR_GREEN

◆ CGA_COLOR_LIGHT

◆ CGA_COLOR_LIGHT2

◆ CGA_COLOR_RED

◆ CGA_MODE_40x25

◆ CGA_MODE_80x25

◆ CGA_MODE_BLINK

◆ CGA_MODE_BW

◆ CGA_MODE_COLOR

◆ CGA_MODE_DISABLE

◆ CGA_MODE_ENABLE

◆ CGA_MODE_GRAPHIC

◆ CGA_MODE_HIRES

◆ CGA_MODE_LORES

◆ CGA_MODE_NOBLINK

◆ CGA_MODE_TEXT

◆ CGA_REG_CURSOR_ADDRESS_H

◆ CGA_REG_CURSOR_ADDRESS_L

◆ CGA_REG_CURSOR_END

◆ CGA_REG_CURSOR_START

◆ CGA_REG_HZ_DISP

◆ CGA_REG_HZ_SYNC_POS

◆ CGA_REG_HZ_SYNC_WIDTH

◆ CGA_REG_HZ_TOTAL

◆ CGA_REG_INTERLACE_MODE

◆ CGA_REG_LPEN_ADDRESS_H

◆ CGA_REG_LPEN_ADDRESS_L

◆ CGA_REG_MAX_SCAN_LINE_ADDRESS

◆ CGA_REG_START_ADDRESS_H

◆ CGA_REG_START_ADDRESS_L

◆ CGA_REG_VT_TOTAL

◆ CGA_REG_VT_TOTAL_ADJUST

◆ CGA_REG_VT_VERT_SYNC_POSITION

◆ CGA_REG_VT_VERT_TOTAL_ADJUST

◆ WRITE_COLOR_SELECT_REGISTER

◆ WRITE_MODE_CONTROL_REGISTER

◆ WRITE_REGISTER

Function Documentation

◆ cga_back()

◆ cga_background_color()

◆ cga_background_color_get_vars()

◆ cga_background_color_semivars()

◆ cga_background_color_vars()

◆ cga_bank_select()

◆ cga_bitmap_at()

◆ cga_bitmap_disable()

◆ cga_bitmap_enable()

◆ cga_blit_image()

◆ cga_border_color()

◆ cga_busy_wait()

◆ cga_calculate_sequence_frame_offset()

◆ cga_cline()

◆ cga_cls()

◆ cga_cls_box()

◆ cga_collision()

◆ cga_colormap_at()

◆ cga_colors_vars()

◆ cga_finalization()

◆ cga_flip_image()

◆ cga_get_height()

◆ cga_get_image()

◆ cga_get_raster_line()

◆ cga_get_width()

◆ cga_hit()

◆ cga_horizontal_scroll()

◆ cga_hscroll_line()

◆ cga_hscroll_screen()

◆ cga_image_converter()

◆ CGA_image_nearest_system_color()

◆ cga_image_size()

◆ cga_initialization()

◆ cga_move_memory_video()