EGA framebuffer
[Framebuffer Service]

HelenOS EGA framebuffer. More...

Files
file	ega.c
file	ega.h
Data Structures
struct	saved_screen
Defines
#define	MAX_SAVED_SCREENS   256
#define	EGA_IO_ADDRESS   0x3d4
#define	EGA_IO_SIZE   2
#define	NORMAL_COLOR   0x0f
#define	INVERTED_COLOR   0xf0
#define	EGA_STYLE(fg, bg)   ((fg) > (bg) ? NORMAL_COLOR : INVERTED_COLOR)
Functions
static void	clrscr (void)
static void	cursor_goto (unsigned int row, unsigned int col)
static void	cursor_disable (void)
static void	cursor_enable (void)
static void	scroll (int rows)
static void	printchar (char c, unsigned int row, unsigned int col)
static void	draw_text_data (keyfield_t *data)
static int	save_screen (void)
static int	print_screen (int i)
static void	ega_client_connection (ipc_callid_t iid, ipc_call_t *icall)
int	ega_init (void)
Variables
saved_screen	saved_screens [MAX_SAVED_SCREENS]
static int	client_connected = 0
static unsigned int	scr_width
static unsigned int	scr_height
static char *	scr_addr
static unsigned int	style = NORMAL_COLOR

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Detailed Description

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Define Documentation

#define MAX_SAVED_SCREENS   256

Definition at line 58 of file ega.c. Referenced by ega_client_connection(), and save_screen().

#define EGA_IO_ADDRESS   0x3d4

Definition at line 66 of file ega.c. Referenced by cursor_disable(), cursor_enable(), cursor_goto(), and ega_init().

#define EGA_IO_SIZE   2

Definition at line 67 of file ega.c.

#define NORMAL_COLOR   0x0f

Definition at line 69 of file ega.c.

#define INVERTED_COLOR   0xf0

Definition at line 70 of file ega.c.

#define EGA_STYLE (  fg, bg   )     ((fg) > (bg) ? NORMAL_COLOR : INVERTED_COLOR)

Definition at line 72 of file ega.c. Referenced by draw_text_data(), and ega_client_connection().

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Function Documentation

static void clrscr (  void   )  [static]

Definition at line 83 of file ega.c. References scr_addr, scr_height, scr_width, and style.

static void cursor_goto (  unsigned int  row, unsigned int  col )  [static]

Definition at line 93 of file ega.c. References EGA_IO_ADDRESS, outb(), and scr_width. Referenced by ega_client_connection(), and printchar(). Here is the call graph for this function:

static void cursor_disable (  void   )  [static]

Definition at line 105 of file ega.c. References EGA_IO_ADDRESS, inb(), and outb(). Referenced by ega_client_connection(). Here is the call graph for this function:

static void cursor_enable (  void   )  [static]

Definition at line 115 of file ega.c. References EGA_IO_ADDRESS, inb(), and outb(). Referenced by ega_client_connection(). Here is the call graph for this function:

static void scroll (  int  rows  )  [static]

Definition at line 125 of file ega.c. References memcpy(), scr_addr, scr_height, scr_width, and style. Referenced by ega_client_connection(). Here is the call graph for this function:

static void printchar (  char  c, unsigned int  row, unsigned int  col )  [static]

Definition at line 140 of file ega.c. References cursor_goto(), scr_addr, scr_width, and style. Referenced by ega_client_connection(). Here is the call graph for this function:

static void draw_text_data (  keyfield_t *  data  )  [static]

Definition at line 148 of file ega.c. References style_t::bg_color, EGA_STYLE, scr_addr, scr_height, scr_width, keyfield_t::style, and style. Referenced by ega_client_connection(), and shm_handle().

static int save_screen (  void   )  [static]

Definition at line 158 of file ega.c. References MAX_SAVED_SCREENS, memcpy(), saved_screens, scr_addr, scr_height, and scr_width. Referenced by ega_client_connection(). Here is the call graph for this function:

static int print_screen (  int  i  )  [static]

Definition at line 173 of file ega.c. References memcpy(), saved_screens, scr_addr, scr_height, and scr_width. Referenced by ega_client_connection(). Here is the call graph for this function:

static void ega_client_connection (  ipc_callid_t  iid, ipc_call_t *  icall )  [static]

Definition at line 182 of file ega.c. References async_get_call(), client_connected, clrscr(), cursor_disable(), cursor_enable(), cursor_goto(), saved_screen::data, draw_text_data(), EGA_STYLE, FB_CLEAR, FB_CURSOR_GOTO, FB_CURSOR_VISIBILITY, FB_DRAW_TEXT_DATA, FB_DROP_PIXMAP, FB_GET_CSIZE, FB_PUTCHAR, FB_SCROLL, FB_SET_STYLE, FB_VP2PIXMAP, FB_VP_DRAW_PIXMAP, ipc_answer_fast(), MAX_SAVED_SCREENS, NULL, print_screen(), printchar(), receive_comm_area(), save_screen(), saved_screens, scr_height, scr_width, scroll(), and style. Referenced by ega_init(). Here is the call graph for this function:

int ega_init (  void   )

Definition at line 302 of file ega.c. References ALIGN_UP, as_get_mappable_page(), async_set_client_connection(), ega_client_connection(), EGA_IO_ADDRESS, iospace_enable(), map_physmem(), scr_addr, scr_height, scr_width, sysinfo_value(), and task_get_id(). Referenced by main(). Here is the call graph for this function:

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Variable Documentation

saved_screen saved_screens[MAX_SAVED_SCREENS]

Definition at line 63 of file ega.c. Referenced by ega_client_connection(), print_screen(), and save_screen().

int client_connected = 0 [static]

Definition at line 75 of file ega.c. Referenced by ega_client_connection(), and fb_client_connection().

unsigned int scr_width [static]

Definition at line 77 of file ega.c. Referenced by clrscr(), cursor_goto(), draw_text_data(), ega_client_connection(), ega_init(), print_screen(), printchar(), save_screen(), and scroll().

unsigned int scr_height [static]

Definition at line 78 of file ega.c. Referenced by clrscr(), draw_text_data(), ega_client_connection(), ega_init(), print_screen(), save_screen(), and scroll().

char* scr_addr [static]

Definition at line 79 of file ega.c. Referenced by clrscr(), draw_text_data(), ega_init(), print_screen(), printchar(), save_screen(), and scroll().

unsigned int style = NORMAL_COLOR [static]

Definition at line 81 of file ega.c. Referenced by change_console(), clrscr(), draw_char(), draw_glyph(), draw_text_data(), ega_client_connection(), printchar(), scroll(), and set_style().

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