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mc146818: remove hacks [Hans Ostermeyer]

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This commit is contained in:
R. Belmont 2011-08-13 21:00:35 +00:00
parent 7dfc3b4799
commit d10d6f0851
1 changed files with 4 additions and 30 deletions
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34
src/emu/machine/mc146818.c
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@ -5,7 +5,7 @@
Implementation of the MC146818 chip Implementation of the MC146818 chip
Real time clock chip with battery buffered ram (or CMOS) Real time clock chip with battery buffered ram (or CMOS)
Used in IBM PC/AT, several PC clones, Amstrad NC200 Used in IBM PC/AT, several PC clones, Amstrad NC200, Apollo workstations
Nathan Woods (npwoods@mess.org) Nathan Woods (npwoods@mess.org)
Peter Trauner (peter.trauner@jk.uni-linz.ac.at) Peter Trauner (peter.trauner@jk.uni-linz.ac.at)
@ -196,32 +196,9 @@ void mc146818_device::device_timer(emu_timer &timer, device_timer_id id, int par
return; return;
} }
if (m_type == MC146818_UTC) {
// hack: set correct real time even for overloaded emulation
// (at least for apollo)
static osd_ticks_t t0 = 0;
osd_ticks_t t1 = osd_ticks();
int n_seconds;
if (t0 == 0) {
t0 = t1;
}
n_seconds = (t1 - t0) / osd_ticks_per_second();
t0 = t1 - (t1 - t0) % osd_ticks_per_second();
if (n_seconds <= 0) {
// we were called to early
return;
}
m_data[0] += n_seconds;
} else {
m_data[0] += 1;
}
if (BCD_MODE) if (BCD_MODE)
{ {
m_data[0]=bcd_adjust(m_data[0]/*+1*/); m_data[0]=bcd_adjust(m_data[0]+1);
if (m_data[0]>=0x60) if (m_data[0]>=0x60)
{ {
m_data[0]=0; m_data[0]=0;
@ -264,10 +241,10 @@ void mc146818_device::device_timer(emu_timer &timer, device_timer_id id, int par
} }
else else
{ {
/*m_data[0]=m_data[0]+1;*/ m_data[0]=m_data[0]+1;
if (m_data[0]>=60) if (m_data[0]>=60)
{ {
m_data[0] -= 60; m_data[0]=0;
m_data[2]=m_data[2]+1; m_data[2]=m_data[2]+1;
if (m_data[2]>=60) { if (m_data[2]>=60) {
m_data[2]=0; m_data[2]=0;
@ -403,9 +380,6 @@ void mc146818_device::set_base_datetime()
current_time = (m_type == MC146818_UTC) ? systime.utc_time: systime.local_time; current_time = (m_type == MC146818_UTC) ? systime.utc_time: systime.local_time;
// temporary hack to go back 20 year (e.g. from 2010 -> 1990)
// current_time.year -= 20;
// logerror("mc146818_set_base_datetime %02d/%02d/%02d %02d:%02d:%02d\n", // logerror("mc146818_set_base_datetime %02d/%02d/%02d %02d:%02d:%02d\n",
// current_time.year % 100, current_time.month + 1, current_time.mday, // current_time.year % 100, current_time.month + 1, current_time.mday,
// current_time.hour,current_time.minute, current_time.second); // current_time.hour,current_time.minute, current_time.second);