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- Add midnight/next day increment

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- Add date and time commands (functionality limited)

Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@3715
This commit is contained in:
Ralf Grillenberger 2011-06-05 18:28:00 +00:00
parent 1887b2590b
commit a5ee614503
5 changed files with 218 additions and 26 deletions
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79
src/dos/dos.cpp
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@ -20,7 +20,6 @@
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <time.h>
#include "dosbox.h"
#include "bios.h"
#include "mem.h"
@ -41,6 +40,34 @@ void DOS_SetError(Bit16u code) {
dos.errorcode=code;
}
const Bit8u DOS_DATE_months[] = {
0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
};
static void DOS_AddDays(Bitu days) {
dos.date.day += days;
Bit8u monthlimit = DOS_DATE_months[dos.date.month];
if(dos.date.day > monthlimit) {
if((dos.date.year %4 == 0) && (dos.date.month==2)) {
// leap year
if(dos.date.day > 29) {
dos.date.month++;
dos.date.day -= 29;
}
} else {
//not leap year
dos.date.month++;
dos.date.day -= monthlimit;
}
if(dos.date.month > 12) {
// year over
dos.date.month = 1;
dos.date.year++;
}
}
}
#define DATA_TRANSFERS_TAKE_CYCLES 1
#ifdef DATA_TRANSFERS_TAKE_CYCLES
@ -373,6 +400,9 @@ static Bitu DOS_21Handler(void) {
break;
case 0x2a: /* Get System Date */
{
reg_ax=0; // get time
CALLBACK_RunRealInt(0x1a);
if(reg_al) DOS_AddDays(reg_al);
int a = (14 - dos.date.month)/12;
int y = dos.date.year - a;
int m = dos.date.month + 12*a - 2;
@ -385,28 +415,37 @@ static Bitu DOS_21Handler(void) {
case 0x2b: /* Set System Date */
if (reg_cx<1980) { reg_al=0xff;break;}
if ((reg_dh>12) || (reg_dh==0)) { reg_al=0xff;break;}
if ((reg_dl>31) || (reg_dl==0)) { reg_al=0xff;break;}
if (reg_dl==0) { reg_al=0xff;break;}
if (reg_dl>DOS_DATE_months[reg_dh]) {
if(!((reg_dh==2)&&(reg_cx%4 == 0)&&(reg_dl==29))) // february pass
{ reg_al=0xff;break; }
}
dos.date.year=reg_cx;
dos.date.month=reg_dh;
dos.date.day=reg_dl;
reg_al=0;
break;
case 0x2c: /* Get System Time */
//TODO Get time through bios calls date is fixed
{
/* Calculate how many miliseconds have passed */
Bitu ticks=5*(mem_readd(BIOS_TIMER) - time_start);
ticks = ((ticks / 59659u) << 16) + ((ticks % 59659u) << 16) / 59659u;
Bitu seconds=(ticks/100);
reg_ch=(Bit8u)(seconds/3600);
reg_cl=(Bit8u)((seconds % 3600)/60);
reg_dh=(Bit8u)(seconds % 60);
reg_dl=(Bit8u)(ticks % 100);
}
case 0x2c: { /* Get System Time */
reg_ax=0; // get time
CALLBACK_RunRealInt(0x1a);
if(reg_al) DOS_AddDays(reg_al);
Bitu time=((Bitu)reg_cx<<16)|reg_dx;
Bitu ticks=(Bitu)(5.49254945 * (double)time);
reg_dl=(Bit8u)((Bitu)ticks % 100); // 1/100 seconds
ticks/=100;
reg_dh=(Bit8u)((Bitu)ticks % 60); // seconds
ticks/=60;
reg_cl=(Bit8u)((Bitu)ticks % 60); // minutes
ticks/=60;
reg_ch=(Bit8u)((Bitu)ticks % 24); // hours
//Simulate DOS overhead for timing-sensitive games
//Robomaze 2
//Robomaze 2
overhead();
break;
}
case 0x2d: /* Set System Time */
LOG(LOG_DOSMISC,LOG_ERROR)("DOS:Set System Time not supported");
//Check input parameters nonetheless
@ -1188,16 +1227,6 @@ public:
dos.version.major=5;
dos.version.minor=0;
/* Setup time and date */
time_t curtime;struct tm *loctime;
curtime = time (NULL);loctime = localtime (&curtime);
dos.date.day=(Bit8u)loctime->tm_mday;
dos.date.month=(Bit8u)loctime->tm_mon+1;
dos.date.year=(Bit16u)loctime->tm_year+1900;
Bit32u ticks=(Bit32u)((loctime->tm_hour*3600+loctime->tm_min*60+loctime->tm_sec)*(float)PIT_TICK_RATE/65536.0);
mem_writed(BIOS_TIMER,ticks);
}
~DOS(){
for (Bit16u i=0;i<DOS_DRIVES;i++) delete Drives[i];