feat: ajout de nombreuses fonctionnalité pour l'affichage en mode texte
This commit is contained in:
parent
e129e59eeb
commit
7349aa3ebb
162
lib/vgatxt.c
162
lib/vgatxt.c
|
|
@ -1,9 +1,10 @@
|
|||
#include "vga.h"
|
||||
#include "string.h"
|
||||
#include "memory.h"
|
||||
#include "port.h"
|
||||
#include "asm.h"
|
||||
|
||||
#include "modes.c"
|
||||
#include "8x8fnt.c"
|
||||
#include "fonts.c"
|
||||
|
||||
#define sequencer 0x3c4
|
||||
#define misc 0x3c2
|
||||
|
|
@ -12,77 +13,144 @@
|
|||
#define graphics 0x3ce
|
||||
#define state 0x3da
|
||||
|
||||
|
||||
static u16 resX,resY,cursX,cursY; /* resolution x,y en caractères et position du curseur */
|
||||
static u16 pages,pagesize,activepage; /* nombre de pages disponibles et taille d'une page */
|
||||
static u8 vmode; /* mode en cours d'utilisation */
|
||||
static u16 basemem; /* debut de la mémoire vidéo */
|
||||
static u16 pages,pagesize,activepage,showedpage;/* nombre de pages disponibles et taille d'une page ansi que la page active et affiché en cours*/
|
||||
static u8 vmode=0xFF; /* mode en cours d'utilisation */
|
||||
static u32 basemem; /* debut de la mémoire vidéo */
|
||||
static bool scrolling,graphic; /* Activation du défilement, Flag du mode graphique */
|
||||
static u8 font; /* n° font actuelle */
|
||||
|
||||
|
||||
void print (u8* string)
|
||||
void showchar (u8 thechar)
|
||||
{
|
||||
u8 *source,*screen;
|
||||
u8 *screen;
|
||||
screen = (u8 *)basemem+activepage*pagesize+2*(cursX+cursY*resX);
|
||||
*screen = thechar;
|
||||
*(++screen) = 0x07;
|
||||
if (cursX++>=resX)
|
||||
{
|
||||
cursX=0;
|
||||
cursY++;
|
||||
}
|
||||
gotoscreen(cursX,cursY);
|
||||
}
|
||||
|
||||
void print (char* string)
|
||||
{
|
||||
u8 *source;
|
||||
source = string;
|
||||
screen = (u8 *)TEXTSCREEN;
|
||||
while(*source!=0x00)
|
||||
{
|
||||
*screen = *source;
|
||||
screen+=2;
|
||||
source++;
|
||||
}
|
||||
while(*source!=0x00) showchar (*source++);
|
||||
}
|
||||
|
||||
void cls (void)
|
||||
|
||||
void showhex (u8 src)
|
||||
{
|
||||
memset((u8 *)TEXTSCREEN,0x20,(80*25*2),2);
|
||||
static u8 hexadigit[16] = "0123456789ABCDEF";
|
||||
showchar(hexadigit[(src&0xF0)>>4]);
|
||||
showchar(hexadigit[src&0x0F]);
|
||||
}
|
||||
|
||||
void clearscreen (void)
|
||||
{
|
||||
gotoscreen(0,0);
|
||||
memset((u8 *)(basemem+activepage*pagesize),0,2*(resY*resX),1);
|
||||
}
|
||||
|
||||
void gotoscreen(u16 x,u16 y)
|
||||
{
|
||||
u16 pos;
|
||||
pos=(cursX+cursY*resX)/2;
|
||||
cursX=x;
|
||||
cursY=y;
|
||||
outb(ccrt,0x0E);
|
||||
outb(ccrt+1,(u8)(pos&0x00FF));
|
||||
outb(ccrt,0x0D);
|
||||
outb(ccrt+1,(u8)((pos&0xFF00)>>8));
|
||||
}
|
||||
|
||||
void fillscreen (u8 color)
|
||||
{
|
||||
memset((u8 *)(basemem+activepage*pagesize+1),color,resY*resX,2);
|
||||
}
|
||||
|
||||
|
||||
void loadfont(u8 num,u8 *font,u8 size)
|
||||
{
|
||||
u16 seqinit[4] = { 0x0100, 0x0402, 0x0704, 0x0300 },
|
||||
graphinit[3] = { 0x0204, 0x0005, 0x0006 },
|
||||
seqend [4] = { 0x0100, 0x0302, 0x0304, 0x0300 },
|
||||
graphend[3] = { 0x0004, 0x1005, 0x0E06 };
|
||||
u8 *dest,*src;
|
||||
u8 i;
|
||||
dest=(u8 *)GRPHSCREEN;
|
||||
src=font;
|
||||
initreg(sequencer,(u8 *)seqinit ,4);
|
||||
initreg(graphics ,(u8 *)graphinit,3);
|
||||
if (num>3)
|
||||
dest+= (((num-4)<<1)+1)<<13;
|
||||
else
|
||||
dest+=num<<14;
|
||||
for(i=0;i<250;i++)
|
||||
{
|
||||
memcpy(dest,src,size);
|
||||
src+=size;
|
||||
dest+=size;
|
||||
memset(dest,0,(32-size),1);
|
||||
dest+=(32-size);
|
||||
}
|
||||
initreg(sequencer,(u8 *)seqend ,4);
|
||||
initreg(graphics ,(u8 *)graphend,3);
|
||||
}
|
||||
|
||||
u8 getfont(u8 num)
|
||||
{
|
||||
return font;
|
||||
}
|
||||
|
||||
void setfont(u8 num)
|
||||
{
|
||||
font=num&0x07;
|
||||
outb(sequencer,3);
|
||||
outb(sequencer+1,num&0x03+(num&(0x04)<<2));
|
||||
}
|
||||
|
||||
u16 setvmode(u8 choosedmode)
|
||||
{
|
||||
u8 *def,i,mode;
|
||||
|
||||
mode=choosedmode&0x7F;
|
||||
u8 *def,mode;
|
||||
mode=(choosedmode&0x7F);
|
||||
if (vmode==0xFF)
|
||||
{
|
||||
loadfont(1 ,(u8 *)font8x8, 8);
|
||||
}
|
||||
if (choosedmode>0x7F)
|
||||
{
|
||||
if (mode>maxgraphmode) return 1; /* mode inexistant */
|
||||
if (mode>=maxgraphmode) return 1; /* mode inexistant */
|
||||
def=(u8 *)&graphmodes[mode];
|
||||
graphic=true;
|
||||
}
|
||||
else
|
||||
{
|
||||
if (mode>maxtextmode) return 1; /* mode inexistant */
|
||||
if (mode>=maxtextmode) return 1; /* mode inexistant */
|
||||
def=(u8 *)&textmodes[mode];
|
||||
graphic=false;
|
||||
}
|
||||
outb(misc,*def++);
|
||||
outb(state,*def++);
|
||||
for(i=0;i<5;i++)
|
||||
{
|
||||
outb(sequencer,i);
|
||||
outb(sequencer+1,*def++);
|
||||
}
|
||||
outb(misc,def[0]);
|
||||
outb(state,def[1]);
|
||||
outreg(sequencer,&def[2],5);
|
||||
outb(ccrt,0x11);
|
||||
outb(ccrt+1,0x0E);
|
||||
for(i=0;i<25;i++)
|
||||
{
|
||||
outb(ccrt,i);
|
||||
outb(ccrt+1,*def++);
|
||||
}
|
||||
for(i=0;i<9;i++)
|
||||
{
|
||||
outb(graphics,i);
|
||||
outb(graphics+1,*def++);
|
||||
}
|
||||
inb(state);
|
||||
for(i=0;i<21;i++)
|
||||
{
|
||||
inb(attribs);
|
||||
outb(attribs,i);
|
||||
outb(attribs,*def++);
|
||||
}
|
||||
outreg(ccrt,&def[7],25);
|
||||
outreg(graphics,&def[32],9);
|
||||
inb(state);
|
||||
outregsame(attribs,&def[41],21);
|
||||
outb(attribs,0x20);
|
||||
resX=def[63];
|
||||
resY=def[64];
|
||||
cursX=0;
|
||||
cursY=0;
|
||||
pagesize=2*resX*resY;
|
||||
activepage=0;
|
||||
vmode=mode;
|
||||
pages=32768/pagesize;
|
||||
basemem=(def[21]<<8)+def[22]+TEXTSCREEN;
|
||||
return 0;
|
||||
}
|
||||
Loading…
Reference in New Issue