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- divider chain reset implemented (fixes bug #865354)

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This commit is contained in:
Volker Ruppert 2003-12-27 13:43:41 +00:00
parent dacdaadf3d
commit 154d9c3bea
1 changed files with 10 additions and 4 deletions
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14
bochs/iodev/cmos.cc
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@ -1,5 +1,5 @@
/////////////////////////////////////////////////////////////////////////
// $Id: cmos.cc,v 1.43 2003-10-02 11:33:41 danielg4 Exp $
// $Id: cmos.cc,v 1.44 2003-12-27 13:43:41 vruppert Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2002 MandrakeSoft S.A.
@ -118,7 +118,7 @@ bx_cmos_c::~bx_cmos_c(void)
void
bx_cmos_c::init(void)
{
BX_DEBUG(("Init $Id: cmos.cc,v 1.43 2003-10-02 11:33:41 danielg4 Exp $"));
BX_DEBUG(("Init $Id: cmos.cc,v 1.44 2003-12-27 13:43:41 vruppert Exp $"));
// CMOS RAM & RTC
DEV_register_ioread_handler(this, read_handler, 0x0070, "CMOS RAM", 1);
@ -453,8 +453,10 @@ bx_cmos_c::write(Bit32u address, Bit32u value, unsigned io_len)
unsigned dcc;
dcc = (value >> 4) & 0x07;
if (dcc != 0x02) {
BX_PANIC(("CRA: divider chain control 0x%02x", dcc));
if ((dcc & 0x06) == 0x06) {
BX_INFO(("CRA: divider chain RESET"));
} else if (dcc != 0x02) {
BX_PANIC(("CRA: divider chain control 0x%02x", dcc));
}
BX_CMOS_THIS s.reg[REG_STAT_A] &= 0x80;
BX_CMOS_THIS s.reg[REG_STAT_A] |= (value & 0x7f);
@ -651,6 +653,10 @@ bx_cmos_c::one_second_timer_handler(void *this_ptr)
void
bx_cmos_c::one_second_timer()
{
// divider chain reset - RTC stopped
if ((BX_CMOS_THIS s.reg[REG_STAT_A] & 0x60) == 0x60)
return;
// update internal time/date buffer
BX_CMOS_THIS s.timeval++;