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/*
* rtime.c - Emulate ICD R-Time 8 cartridge
*
* Copyright (C) 2000 Jason Duerstock
* Copyright (C) 2000-2005 Atari800 development team (see DOC/CREDITS)
*
* This file is part of the Atari800 emulator project which emulates
* the Atari 400, 800, 800XL, 130XE, and 5200 8-bit computers.
*
* Atari800 is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Atari800 is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Atari800; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include <stdlib.h> /* for NULL */
#include <string.h> /* for strcmp() */
#ifdef HAVE_TIME_H
#include <time.h>
#endif
#ifdef HAVE_WINDOWS_H
#include <windows.h>
#endif
#include "atari.h"
#include "log.h"
#include "rtime.h"
int RTIME_enabled = 1;
static int rtime_state = 0;
/* 0 = waiting for register # */
/* 1 = got register #, waiting for hi nybble */
/* 2 = got hi nybble, waiting for lo nybble */
static int rtime_tmp = 0;
static int rtime_tmp2 = 0;
static UBYTE regset[16] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
int RTIME_Initialise(int *argc, char *argv[])
{
int i;
int j;
for (i = j = 1; i < *argc; i++) {
if (strcmp(argv[i], "-rtime") == 0)
RTIME_enabled = TRUE;
else if (strcmp(argv[i], "-nortime") == 0)
RTIME_enabled = FALSE;
else {
if (strcmp(argv[i], "-help") == 0) {
Log_print("\t-rtime Enable R-Time 8 emulation");
Log_print("\t-nortime Disable R-Time 8 emulation");
}
argv[j++] = argv[i];
}
}
*argc = j;
return TRUE;
}
#if defined(HAVE_WINDOWS_H) || (defined(HAVE_TIME) && defined(HAVE_LOCALTIME))
static int hex2bcd(int h)
{
return ((h / 10) << 4) | (h % 10);
}
static int gettime(int p)
{
#ifdef HAVE_WINDOWS_H
SYSTEMTIME st;
GetLocalTime(&st);
switch (p) {
case 0:
return hex2bcd(st.wSecond);
case 1:
return hex2bcd(st.wMinute);
case 2:
return hex2bcd(st.wHour);
case 3:
return hex2bcd(st.wDay);
case 4:
return hex2bcd(st.wMonth);
case 5:
return hex2bcd(st.wYear % 100);
case 6:
return hex2bcd(((st.wDayOfWeek + 2) % 7) + 1);
}
#else /* HAVE_WINDOWS_H */
time_t tt;
struct tm *lt;
tt = time(NULL);
lt = localtime(&tt);
switch (p) {
case 0:
return hex2bcd(lt->tm_sec);
case 1:
return hex2bcd(lt->tm_min);
case 2:
return hex2bcd(lt->tm_hour);
case 3:
return hex2bcd(lt->tm_mday);
case 4:
return hex2bcd(lt->tm_mon + 1);
case 5:
return hex2bcd(lt->tm_year % 100);
case 6:
return hex2bcd(((lt->tm_wday + 2) % 7) + 1);
}
#endif /* HAVE_WINDOWS_H */
return 0;
}
#define HAVE_GETTIME
#endif /* defined(HAVE_WINDOWS_H) || (defined(HAVE_TIME) && defined(HAVE_LOCALTIME)) */
UBYTE RTIME_GetByte(void)
{
switch (rtime_state) {
case 0:
/* Log_print("pretending rtime not busy, returning 0"); */
return 0;
case 1:
rtime_state = 2;
return (
#ifdef HAVE_GETTIME
rtime_tmp <= 6 ?
gettime(rtime_tmp) :
#endif
regset[rtime_tmp]) >> 4;
case 2:
rtime_state = 0;
return (
#ifdef HAVE_GETTIME
rtime_tmp <= 6 ?
gettime(rtime_tmp) :
#endif
regset[rtime_tmp]) & 0x0f;
}
return 0;
}
void RTIME_PutByte(UBYTE byte)
{
switch (rtime_state) {
case 0:
rtime_tmp = byte & 0x0f;
rtime_state = 1;
break;
case 1:
rtime_tmp2 = byte << 4;
rtime_state = 2;
break;
case 2:
regset[rtime_tmp] = rtime_tmp2 | (byte & 0x0f);
rtime_state = 0;
break;
}
}
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