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Add vga_is_available() to know if VGA has been activated, give level 2 info to vga_init

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This commit is contained in:
Laurent Vivier 2007-09-11 23:00:07 +00:00
parent e12e2bb481
commit 78e15acf9d
2 changed files with 26 additions and 3 deletions
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26
second/vga.c
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@ -15,8 +15,10 @@
#include "misc.h"
#include "vga.h"
#include "keyboard.h"
#include "head.h"
#include "config.h"
QDGlobals qd;
static QDGlobals qd;
#define CHARSET_0 0
#define CHARSET_A 1
@ -134,6 +136,8 @@ static unsigned char translation[][256] = {
typedef struct vga_handler {
unsigned int enabled;
unsigned char* video;
unsigned char* base;
unsigned long row_bytes; /* in bytes */
@ -187,6 +191,8 @@ static unsigned char bits_depth8[2] = {
static vga_handler_t vga =
{
.enabled = 0,
.video = 0,
.base = 0,
.row_bytes = 0,
@ -515,10 +521,13 @@ vga_scroll()
static void vga_clear();
int
vga_init()
vga_init(emile_l2_header_t* info)
{
GDHandle hdl;
volatile PixMapPtr pm;
char* mode;
mode = read_config_vga(info);
InitGraf(&qd.thePort);
@ -559,6 +568,11 @@ vga_init()
vga_cursor(0);
vga_clear();
if (strcmp(mode, "none") != 0)
vga.enabled = 1;
free(mode);
return 0;
}
@ -607,6 +621,9 @@ vga_put(char c)
int tmp_x, tmp_y;
char *end;
if (!vga.enabled)
return;
vga_cursor(0);
/* VT100 EMULATION */
@ -801,3 +818,8 @@ unsigned long vga_get_video()
{
return (unsigned long)vga.video;
}
int vga_is_available(void)
{
return vga.enabled;
}

3
second/vga.h
View File

@ -7,7 +7,7 @@
#ifndef __VGA_H__
#define __VGA_H__
extern int vga_init();
extern int vga_init(emile_l2_header_t* info);
extern void vga_put(char c);
extern void vga_print(char *s);
@ -19,5 +19,6 @@ extern unsigned long vga_get_depth();
extern unsigned long vga_get_width();
extern unsigned long vga_get_height();
extern unsigned long vga_get_video();
extern int vga_is_available(void);
#endif