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refresh clock dummy emulation (netbsd boot fix) 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@341 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2003-07-27 22:19:00 +00:00
parent 2c1794c42e
commit 61a2ad53cb
1 changed files with 4 additions and 1 deletions
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5
vl.c
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@ -858,6 +858,7 @@ typedef struct PITChannelState {
PITChannelState pit_channels[3];
int speaker_data_on;
int dummy_refresh_clock;
int pit_min_timer_count = 0;
int64_t ticks_per_sec;
@ -1115,7 +1116,9 @@ uint32_t speaker_ioport_read(CPUX86State *env, uint32_t addr)
{
int out;
out = pit_get_out(&pit_channels[2]);
return (speaker_data_on << 1) | pit_channels[2].gate | (out << 5);
dummy_refresh_clock ^= 1;
return (speaker_data_on << 1) | pit_channels[2].gate | (out << 5) |
(dummy_refresh_clock << 4);
}
void pit_init(void)