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Ondrej Novak 2025-01-24 18:27:22 +01:00
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/*
* Nahodi SVGA
*/
#include <dos.h>
#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
#include <string.h>
#define SCREEN_AREA 0xa000
#define SCREEN_LIN_ADDR ((SCREEN_AREA) << 4)
#define SCREEN_SIZE 65537
unsigned char pomoc[256];
void main()
{
unsigned short *pscreen;
unsigned int sizegran;
int i,err;
int col;
int g;
union REGPACK regs;
//-------------------------------------------------------------
//pomoc = (unsigned char *)malloc(512);
memset( &regs, 0, sizeof(union REGPACK) );
regs.w.ax = 0x4f02;
regs.w.bx = 0x0111;
intr( 0x10, &regs);//nastaveni videomodu
//regs.w.ax = 0x4f01;
//regs.w.cx = 0x0101;
//regs.w.es = FP_SEG (pomoc);
//regs.w.di = FP_OFF (pomoc);
//intr( 0x10, &regs);//zjisteni granularity v KB
//err = regs.w.ax;
//sizegran = pomoc[4];
//sizegran = sizegran*1024;
//if (sizegran<=65536)
//----------------------------
for( col = 0; col < 100; col++ ) {
trace:if (!(inp( 0x03da )&8 )) goto trace;// cekani na raytrace
for( g = 0; g < 10; g++ ) {
regs.w.ax = 0x4f05;
regs.w.bx = 0;
regs.w.dx = g;
intr( 0x10, &regs);//prepnuti videostranky
pscreen = (unsigned short *)SCREEN_LIN_ADDR;
for( i = 0; i < SCREEN_SIZE; i+=sizeof(*pscreen) ) {
*pscreen = i+col*g;
pscreen+=1;
}
}
}
regs.w.ax = 0x0003;
intr (0x10,&regs);
//for( g = 0; g < 15; g++ ) printf("%X...%X\n",g,pomoc[g]*1024);
//free (pomoc);
//printf("err %X\n",err);
}